985 Workbench: 2026-02-16

My Week in Radio

  • CQ WW RTTY contest
    • 70 contacts in one afternoon
    • a little antenna maintenance in the middle
  • using pulleys in the tree for cleaner rope work in trees, learned from field day setup

Others

  • WA3VEE, Ron:
    • worked with Drexel club to get them back on the air next month
      • lapsed license
    • all the antennas off the garage to fit in parking garages
    • offering a tech class licensing course
    • offering tech class and VE session for Drexel as well
    • developing a General course
  • K3KB, Alan:
    • planning a move and getting rid of some things
      • not a builder/experimenter anymore
      • may bring some things to the breakfast
    • new retirement community location will have limitations
    • was a pretty active home brewer
  • KC3YSM, Steve:
    • 40M is hopping
  • AF3Z, Jim:
    • SKCC event this past weekend
      • used PennTech TR45L, QRP CW
      • 40M, 80M, 20M
  • W3KZG, Scott:
    • sorting and selling some radio gear
    • doing repairs again
    • printing some power-pole mounts to retrofit radios
  • KC3OOK, Bill:
    • Nets
    • 985 has been active
    • Thanks Chuck for teaching PL-259 plugs.
      • some factory connections were loose
  • KA3GLI, David:
    • bought the ARRL Grounding and Bonding Book
    • also got an 80M extension for his EFHW
    • picked up a heat gun for building teh efhw
    • purchased a replacement fan for another VHF/UHF rig
  • NA3CW, Chuck:
    • never had good luck with factory-installed connectors
    • always does his own
    • PMAM net
    • testing Joe’s tuner at 1KW.
  • KC3RFG, Jim:
    • check in on ECARS mobile
  • WA3KFT, John:
    • fighting coax, intermittent connections
    • maybe a broken coax switch
    • “Waters” manufacturer is long gone
    • need to find a worthy replacement
  • KC3SQI, Wayne:
    • need to reassemble 10M antenna when the weather improves
  • W3GMS, Joe:
    • Dylan is working on new broadcastify connection
      • it’s currently just humming and not working yet

Questions

  • K3KB, Alan:
    • Looking for recommendations for a single wire antenna for an HOA. He may be able to stretch a wire to another building about 80ft away.
    • KC3SQI, Wayne:
      • look at EFRW with a tuner
      • could do an inverted-L
    • AF3Z, Jim:
      • Random is not really random.
      • avoid resonant to be able to multiband.
    • KC3NZT, Harvey:
      • likes resonant EFHW
      • has a 78-ft that may fit
      • hit the tuner for the other bands
      • radiates from the center, so the height of the ends doesn’t matter so much.
    • KD3EE, John:
      • lots of fun to be had as a builder/experimenter
      • 80M EFHW is 133ft, 40M EFHW will be 66ft.
      • 73ft is a EFRW.
    • K3KB, Alan:
      • don’t give me too much credit as a builder
      • lots of it has faded away
  • NA3CW, Chuck:
    • Listening to CW on 40M late at night, there are 3 stations sending really fast, messy, swinging bug CW. It’s hard to copy. Does anyone know much about it?
    • W3DIB, Greg:
      • encryption by syncopation
    • AF3Z, Jim:
      • may have heard it
      • can’t copy it either
      • sloppy encryption?
    • K3KB, Alan:
      • brother used to listen to a station broadcasting scripture to go to sleep
      • is this broadcast or amateur communication?
    • NA3CW, Chuck:
      • has heard of “great lake swing”, but that is still copyable
  • K3EMI, Randy:
    • Bringing up a big power supply with a variac, the power supply has a meter on it that sticks in the winter probably due to static charge. touching it with a wet finger to discharge it releases it.
    • WA3KFT, John:
      • put a wire mesh over the front of the meter and ground it, hardware cloth with 1/4-inch squares.
    • NA3CW, Chuck:
      • seen it lots of times over the years.
      • wipe it with a dryer sheet
    • WA3KFT, Ron:
      • has a vis-meter that does it as well
      • tribo-electric effect in polystyrene
      • rubber band a grounding strap mesh to part of the face
    • KC3RFG, Jim:
      • laying a wet paper towel on LCD helps those displays when they’re stuck in cold winter
    • KC3SQI, Wayne:
      • mix water and soap to spray on it
    • W3KZG, Scott:
      • staticide spray
      • static guard (tm)
    • NA3CW, Chuck:
      • anything you try, be careful of solvents in a spray
      • test it in as spot
    • K3EMI, Randy:
      • thinking of staticide from digikey
      • likes the idea of wetting a dryer sheet
      • new problem in this house and shack

21 Tech Net: 2026-02-15

My Week in Radio

  • CQ WW RTTY contest
    • 70 contacts in one afternoon
    • a little antenna maintenance in the middle
      • poking at un-un
      • reinstalling counterpoise
  • PSKFest
    • 3rd place in QRP class (of 4 people)
  • fixed some connections in or near the house to fix some 2M antenna performance
  • using pulleys in the tree for cleaner rope work in trees
  • New R1CBU 0.32.2 firmware for the X6100
  • loaded frequencies into the scan on the quansheng to watch for those new satellites Tom’s been emailing
  • APRS getting much better on RT-880G with alternate firmware
  • loved to hear about practical guid to IRLP into KA3TKW

Others

  • K3EA, Greg:
    • RTTY contest
    • CW contest
    • NA QSO Party for RTTY upcoming
    • state QSO parties are coming up, good for WAS
    • 17 and 20M will have best propagation for DX
    • hamclock backend is going away
  • WB3LNY, George:
    • Hamcation in FL
      • nearly as big as hamvention
  • KC5DRI, John:
    • Hamcation in FL
      • meeting people
  • WE3ARE, Paul:
  • W3TUG, “Tug”/Ray:
    • Hamcation in FL
  • VE3HOH, Pete:
    • Chris Casper demoed meshtastic for another club
    • wants to get into it
    • has openhamclock running
  • KA3TKW, Tom:
    • UMK-1 satellite: got a good pass and posted SSTV photos
    • RS-18: 437.950 downlink for SSTV. 10 or 11pm tonight, then 10 or 11 am in the morning
      • then done
    • amsat website -> satellite resources -> current satellite status
      • added these new SSTV satellites
    • chinese space station will have ham radio soon
      • 145.825 / 436.510 down
      • and another
    • ham lunch last thursday: hibachi buffet
  • K3DMM, Denny:
    • some satellite contacts from within the house
    • QRZ 250 certificate
      • 20% confirmed on SSB
    • AnyTone AT-890UV
      • a friend has a video using full duplex on the HT for satellite.
  • KC3NWN, Jim:
    • using a president washington on 11M
    • XFM program for satellite
    • elwood of ham clock SK
  • KA3TKW, Tom:
    • IRLP How-to
      • buy an IRLP node for $250-500
      • get a node number assigned
      • 9204 is the one 21 is connected
  • KK4KKW, Steve:
    • some HF work down in Florida
      • good contacts
    • contacts harder up here
  • N7JMS, John:
    • FT8
    • listening on 21

985 Workbench: 2026-02-09

My Week in Radio

  • SWR trouble with HF antenna last week was a bad connection outside the window
  • Operating on RF, since I’m mobile on a hill after camera club meeting
  • APRS radio went quiet, so my slim jim seems broken

Others

  • WA3VEE, Ron:
    • hosting upgrade classes soon
    • look for article or whatever: “listening to jupiter”
  • W3MFB, Mike:
    • 10-10 contest over the past weekend
      • good conditions
      • Europe
  • KC3OOK, Bill:
    • working on sub-panel for ham shack
  • W3KZG, Scott:
    • doing radio repairs while it’s cold out
    • installed radios in larger rolling rack: 30U
  • KA3GLI, David:
    • reading the W1MFB Antenna Notebook
    • building EFHW un-un
    • visited RadioShack in New Holland
  • KC3NZT, Harvey:
    • got online confirmation for Galapagos
  • AA3LH, Leon:
    • Roosters Net
    • working 80m and 40m, extra portion
    • will work on antennas next week when warm
  • AF3Z, Jim:
    • FYBO (Freeze Your Buns Off) QRP contest over the weekend

Questions

  • KC3OOK, Bill:
    • What’s the difference between ceramic and plastic potentiometer trimmers?
    • WA3KFT, John:
      • ceramic may be for VHF/UHF applications
      • moisture may detune a circuit being adjusted
    • W3KZG, Scott:
      • he has cheap plastic kit with lots of sizes. it functions fine.
      • 6-8 plastic screwdrivers
      • cheap is fine for light use
    • NA3CW, Chuck:
      • has plastic, never tried ceramic
      • materials matter for trimming variable capacitors
      • any material is fine for pots
    • WA3VEE, Ron:
      • How sensitive are some of these circuits?
    • W3KZG, Scott:
      • tools are non-conductive and non-inductive
      • some pots can be shorted
    • KN3I, John:
      • GC Electronics kit should be really good; known name.
  • AA3LH, Leon:
    • He has a G5RV doublet for travel, and it tunes hard on 80M. If he added 10ft to each leg (51-ft legs to 61ft), would it help, and how would he need to adjust the 37-ft?
    • NA3CW, Chuck:
      • simulate it
      • stay away from quarter wave feed lengths
      • probably ok with tuner
    • W3GMS, Joe:
      • for the standard lengths, the impedance is around 50 ohms, so only needs the 1:1 balun.
      • may need to trim the ladder line
    • NA3CW, Chuck:
      • G5RV is 3/2 wave for 20m, so it work well there + other bands.
      • extra length will detune it for its intended use
    • W3GMS, Joe:
      • look into the “improved G5RV” - better tune
      • adjusting probably won’t get you much
      • add more open wire line and eliminate coax, and it’ll be an efficient doublet
  • KB3ZIM, Bob:
    • Did anyone work AM Rally? He got 30 contacts and had a blast: 10m, 40m, roundtables
    • KN3I, John: just a few hours in the afternoon on 40m
  • KC3NZT, Harvey:
    • Testing diodes in a rectifier before a coil:
      • Had to measure the current to calculate the resistance, since he couldn’t isolate anything.
      • Is there a better way to test coil resistance through the diodes?
      • How do diodes fail?
    • WA3VEE, Ron:
      • Diodes usually fail shorted
    • WA3KFT, John:
      • diodes change resistance with the amount of current
      • isolate the diode and use DC with known resistor
      • measure resistive drop across diode
    • W3KZT, Scott:
      • need to isolate diode from the coil to measure
      • resistance in coil

985 Workbench: 2026-02-02

My Week in Radio

  • PSKFest 3rd place in QRP class (of 4 people)
  • New R1CBU 0.32.2
    • IF shift feature to move birdies away from your signal
  • 2W FT8 to Belgium and back on 40M
  • EFHW high SWR, but tuner deals with it
    • too cold to go out to investigate much
    • wonder if it’s water and ice on the uninsulated rope

Others

  • KN3I, John:
    • radio on the workbench for repairs
  • WA3VEE, Ron:
    • back to Drexel to help get their station back on the air
      • Kiana, a student.
    • K3DTS is closer to having liability insurance for classes
    • working with the balloon team from Drexel and another High School
      • APRS for tracking
      • launch from Nottinghill Farm Park
  • W3SCY, Luke:
    • working on CW, 20wpm
    • WFD 2 weeks ago
    • checked into AMPM net on 3835kHz, Sunday, 04:30pm.
  • NA3CW, Chuck:
  • KC3OOK, Bill:
    • net control for various nets
    • enjoying crimp coax connectors
  • W3KZG, Scott:
    • refurbishing some export 10/11/12M export radios to keep and sell
  • WA3KFT, John:
    • various nets
    • lots of check-ins on AWA net, 7237kHz
  • KD3AIS, Tim:
    • back from a trip to Germany and Netherlands
    • Looking forward to Ron’s classes
  • AF3Z, Jim:
    • SKCC anniversary event is done: K3Y here in the states
      • helped coordinate 17 operators
      • ~4100 contacts
      • 1363 unique operators
      • 300 contacts personally
      • US sweep: 9 call areas + Alaska, Hawaii, PR
  • AA3LH, Leon:
    • spoke to Costa Rica
  • W3DEN, Dennis:
    • Just moved to West Chester
    • in a retirement community, so antenna restricted
  • W3MOW, Mike:
    • fired up raspberry pi hotspot for DMR
    • new vehicle, so radio not setup in mobile yet.

Questions

  • WA3VEE, Ron:
    • Students are using APRS to track balloons they launch.
    • using a kenwood HT and phones to track APRS.
    • suggest maybe a beam for tracking it directly
    • What is the range of APRS?
    • Suggestions for tracking?
    • W3KZG, Scott:
      • check with Corbin, K3HXW.
    • KD3EE, John:
      • it’s packet radio, so relayed by digipeaters
      • bridged to the internet, so reliably visible on aprs.fi
      • btech uv-pro is a great, inexpensive radio.
      • seeing DC to Williamsport to New Jersey on my map here
      • I have a fixed antenna for APRS 30 ft in a tree
  • AA3LH, Leon:
    • Un-Un at the end of an EFHW, how do they get away without a counterpoise?
    • WA3KFT, John:
      • Needs a good earth ground to be the other half of the antenna
        • stake, water pipe, etc.
        • need a radiating element and a counterpoise
    • KC3RFG, Jim:
      • started with end-fed antennas
      • if you don’t install a counterpoise, it’ll use the shield of your coax as the other half of your antenna
      • choke the coax before it enters the house or gets to the radio
      • proper counterpoise helps avoid RF on the coax
    • NA3CW, Chuck:
      • he wrote an article on the 985 website
      • not all end-feds are horizontal, any vertical antenna is an end-fed
      • running low power, you don’t need to worry as much about return RF.
      • vertical whips are end-fed
      • horizontal random wire is an end-fed.
      • ground plane or radials of a vertical is a counterpoise
      • person serves as counterpoise on an HT
    • AA3LH, Leon:
      • always uses speaker-wire counterpoises with ham stick verticals
  • WA3VEE, Ron:
    • Has anyone interfaced a weather station to NOAA via APRS or via internet connection?
    • W3MOW, Mike:
      • Is this the same integration like Weather Underground?
    • WA3VEE, Ron:
      • Weather Underground and all those other services.
      • Ground Truth Weather
    • W3KZG, Scott:
      • Dylan, K3DZN, has a weather station at the house that’s all linked up.
    • KC3OOK, Bill:
      • Have you bought the Davis View weather station yet
      • It has lots of modules
      • APRS is a module, good for emergency service
      • Can run on a RPi or small computer depending how much you want to do
985  workbench  w3gms  net  dx  ft8  aprs 

985 Workbench: 2026-01-26

My Week in Radio

  • Winter Field Day
    • I logged for CW ops and listened along
    • I could hear 2-3 characters at a time

Others

  • W8CRW, CR:
    • Field Day
  • WA3VEE, Ron:
    • Field Day
      • operated most
      • worked N3FJP, author of the software
      • W1AW
      • W2AEW see on youtube
      • worked with Kianna
  • W3KZG, Scott:
    • field day trailer worked out great
  • KB3PZY, Al:
    • first field day
    • Thanks Harvey for mentoring
    • 30 some contacts
  • KB3ILS, Keith:
    • antennas up at the field day site
    • got to WFD early
    • laptops, network, power worked great
    • 450-475 contacts made
    • SKCC
      • PR on 6M CW
      • Alaska on 15M CW
  • WA3KFT, John:
    • WFD with another club, 75M
      • didn’t hear anyone in the afternoon, all noise
      • early evening it lit up
  • KC3OOK, Bill:
    • simplex net
    • welfare net
  • NA3CW, Chuck:
    • welcome Al
    • antenna install for WFD with lots of people
    • “how to cut a dipole the second time, every time” worked pretty well
    • used Joe’s tuner with 100W testing
    • PMAM pre-net
  • AF3Z, Jim:
    • SKCC month ends on saturday
      • coordinating SKCC ops, had enough of it :)
      • worked 240 contacts with special callsign
    • worked WFD with cornwall station
      • proved total lid
        • operated a Elecraft K3 on 40M
        • heard W3R, but couldn’t get an answer
        • K3 needs VOX enabled for CW, so it wasn’t transmitting
        • quit for the morning
        • realized much later about VOX
  • AA3LH, Leon:
    • winter field day at home: 40M and 80M *** Questions
  • KD3EE, John:
    • What was the problem with the 80M antennas and that radio that rebooted?
    • How significant is the dipole arrangement (flat vs inverted-v) to multi-station operation?
    • W3KZG, Scott:
      • originally thought it was RF
      • switched radio to AC-DC power supply, and then the radio was fine
      • trailers battery may not have kept up with the severe cold
      • new radio couldn’t tolerate voltage drop, but older radio was ok
      • LiFEPo battery struggles under 30F
      • CW dipole showed high SWR at one spot, still needed to be investigated more
    • WA3VEE, Ron:
      • when the weather is better, Ron will run a complete analysis on each antenna on the site.
      • we can talk inductance and capacitance then
      • there seems to be an RFI problem from a power transformer insulator up there as well
    • KB3ILS, Keith:
      • 80M dipole cut for sideband worked well
      • 40M CW in the corner may need some work
      • 1 beam was pointing at the 80M dipole, so likely caused lots interference
      • it’ll be good to analyze when no one transmitting
      • one 40M dipole may be close to noise.
      • some experimenting to do
      • we still got lots of 40M contacts
    • NA3CW, Chuck:
      • power-line interference has been an ongoing issue
      • Chuck has a small moxon for 137MHz that will be good paired with AM on his HT to search for the noise source
        • worked to find a bad pole in his neighborhood
      • inverted vs flat dipole
        • dipoles end to end have very little radiation off the ends.
        • inverted-v antennas would have seen each other on the ends
        • analyzers work with very low signals, so would have totally been skewed by nearby QRN and TX
    • KB3ILS, Keith:
      • Chuck, let’s build a dipole curtain array for field day.
  • W3MFB, Mike:
    • HF vertical can have a ground plane, even in the air or on the ground? They help control common-mode current? Why use them?
    • WA3VEE, Ron:
      • the ground plane is the other half of your antenna.
    • WA3KFT, John:
      • Has the Amtron A99 on a tower without the ground plane kit, but has a TV mast below it on the tower, so may be serving the purpose.
    • W3KZG, Scott:
      • IMAC 2000 antenna, 50 ft in the air without the ground plane kit. The galvanized steel mast underneath it served as the ground.
      • AMTRON 99 came with it, so he installed it. It looks cool.
    • AA3LH, Leon:
      • Used tuned hamsticks in Colorado, and put out lots of radials.
    • KD3EE, John:
      • the computer and radio going wonky (touchpad, USB, etc) always remind me when I need to add radials to my vertical antenna.
    • W3MFB, Mike:
      • With the IMAC, he knows he needs the ground plane kit as it gets higher in the air.
      • His is grounded to a gas pipe, so it seems to work pretty well, and he’s gotten to Australia.
      • Also has lots of coax to absorb it.
      • Has gotten to Australia with it.
  • KD3BPI, Simon:
    • He’s planning for antennas on the house, 2 stories, walk-up attic. He has a dormer facing west, and was planning to mount antennas there. Easy to get to them from attic. Can he mount all the antennas on one plate or should he space them out?
      • regional HF (20m) antenna and dual-band 2m/70cm antenna.
    • WA3VEE, Ron:
      • Personally doesn’t like to have antenna on the house, since it draws lightning.
      • How much land?
        • Simon: L-shaped, 1/3 acre, but no trees that are actually his.
      • 40M would be a good horizontal wire for regional NVIS
      • grounding is imperative for lightning protection of the house.
      • those antennas, in size, are very different.
      • wires are easier for HF
    • W3GMS, Joe:
      • the Hustler 5-BTV for 80-10M is a good option
      • he has radio and tuner for Simon
    • W3MFB, Mike:
      • Hustler in the yard would be a good option
      • pin down the feed line and radials with lawn stakes
      • neighbors trees: any limbs over your property could be used to hold up an end fed antenna
      • get the antenna as high as you can get it
    • WA3KFT, John:
      • He has 5 antennas at the top of a tower, like a candlabra.
      • an edger is good for grooving the lawn for wires
    • WA3VEE, Ron:
      • sent link to the Hustler 5-BTV
      • the digital modes are FT8 and PSK31
    • W3KZG, Scott:
      • Has an NMO lip-mount with dual band antenna clamped to the rain gutter of the shop.
    • KC3NZT, Harvey:
      • using a copper pipe j-pole inside in the attic of the garage.
        • should work just fine.
      • an HF antenna in the attic would work fine too
    • WA3VEE, Ron:
      • for new hams and those in HOAs, attic antennas can be effective
    • W8CRW, CR:
      • Why’s the 5-BTV so highly recommended, compared to other variations?
      • WA3VEE, Ron:
        • the 5 walks the line of versatility and size
        • they’re different sizes
    • W3GMS, Joe:
      • a 4-BTV is 4-bands, 5- is 5-band, etc.
    • KA3GLI, David:
      • on the 5-BTV, what auto-tuner is recommended?
      • W3GMS, Joe:
        • LDG RC-1 auto-tuner helps match as you get away from the vertical’s narrow, high-Q, resonant spot.
    • KD3EE, John:
      • remember you can build these HF antennas with some wire and toroids.
  • KD3BPI, Simon:
    • How does height affect performance of a vertical: ground vs roof?
    • W3GMS, Joe:
      • wire radials on the ground are easy. detuned by the earth.
      • lots of short radials are best
      • elevated radials will perform better, but will require tuning of radials.
      • random lengths are fine on the ground
    • KC3WRY, Matt:
      • a ground-mounted antenna is easier to tune, instead of up in the air.
      • ground-mounted can always later be moved.
    • WA3KFT, John:
      • worked at an AM radio station.
      • when they moved, they rebuilt all the radials.
        • 60 short and 60 long radials
    • W3GMS, Joe:
      • 8 radials with the 5-BTV at the beach was fine
      • gains aren’t as impressive after the first radials

985 Workbench: 2026-01-19

My Week in Radio

  • at breakfast, I showed off a USB adapter to use a CW key on the computer to chat online or play video games to practice CW
    • I’m quickly improving my score as I practice.
  • helped install antennas today at field day site
    • see the seasoned pros in action
    • afterward, I visited Micro Center, since I was relatively close

Others

  • W3MFB, Mike:
    • ARRL VHF contest: 6M and 70cm SSB
  • NA3CW, Chuck:
    • field day site:
      • cold, but not windy
      • new 40M dipole for CW
      • new 80M dipole for phone
      • old 80M dipole tested good for CW
      • flipped the TA-33 beam
      • CL-33 beam has a broken element, still on the ground
    • Joe’s tuner is completed and ready to test for real on his open wire line
  • W3KZG, Scott:
    • worked on the trailer a bit for field day
      • 12V lines and power bank
      • heat sources
    • field day site
      • straightened up George’s trailer
  • KB3ILS, Keith:
    • field day conditions may be challenging: maybe 20F if we’re lucky
      • zoom planning call on Thursday
      • next work day is friday
        • staging
        • vertical antenna
      • start at 11AM Eastern
    • working straight key: got a station in Hawaii
  • KB3PZY, Al:
    • some 20M contacts
    • field day site
  • KD3BPI, Simon:
    • messing with SDR
      • how does an RTL-SDR work?
      • one chip for radio and for USB
      • can it be repackaged as a PI hat?
    • looking forward to field day ops
  • AF3Z, Jim:
    • SKCC: coordinating K3Y operators
      • he’s made 200 contacts on that callsign
      • top person may have 700 contacts
    • afternoon sked with friend
  • KC3OOK, Bill:
    • enjoyed simplex net on saturday
    • attended field day install
  • WA3KFT, John:
    • January VHF contest: 6M
      • only 1 station found at startup
      • lots of FT8
  • WA3VEE, Ron:
    • thanks everyone who came to the field day
    • FTDX-10 does not have the CW filter
    • preparing power supplies
    • W3R is reserved for next year’s WFD

Questions

  • W3MFB, Mike:
    • Everyone checking in, sounded clear. WA3KFT, John, clicks in and out on his Anytone rig. Why?
    • WA3KFT, John:
      • 100W into the cable
    • NA3CW, Chuck:
      • WA3KFT is badly deviated, needed to turn down audio when receiving.
    • AF3Z, Jim:
      • As Chuck said, WA3KFT, John is loud.
      • Can hear everything just fine, no cut-out, so that may be Mike’s rig.
    • WA3VEE, Ron:
      • Mike, do you have the ability to set narrow/wide?
      • Delaware City UHF repeater exhibits clipping
    • W3MFB, Mike:
      • has deviation set to wide
      • Yaesu hears John just fine.
      • AA3LH, Leon, is always loud, but OK.
    • W3KZG, Scott:
      • google that radio and the problem. there are settings to adjust to mitigate it
  • W3MFB, Mike:
    • Does anyone have any experience working aurora on 6M? There’s a flare coming tonight.
    • WA3VEE, Ron:
      • a couple years ago when solar cycle was lower, he made a few contacts.
    • More people should use 6M.
  • AF3Z, Jim:
    • Has anyone heard anything much about the effecst of solar flares today around 1pm?
    • W3KZG, Scott:
      • forums complaining about bands being totally dead, even up to 2M
    • W3MFB, Mike:
      • 10M and 40M were noisy around 4pm
      • 80M has some people, and is pretty clean right now
    • AF3Z, Jim:
      • a K3Y operator was struggling to pull people out of noise
      • one station would be clear, then another like a spark hash
      • Jim heard warbling tones
  • WA3VEE, Ron:
    • Antennas were cut long, then installed, we tested, then adjusted. What’s the formula for determining the amount to trim?
    • NA3CW, Chuck:
      • SWR guesses were just good guesses.
      • For adjusting the length of the dipole: “tuning your dipole, second time, every time”
      • lots of things affect resonance:
        • height
        • quality of ground
        • insulation
        • wire velocity factor
      • to adjust:
        • measure before you put it up, while long
        • install it
        • measure where it resonates
        • corrected length / original length = desired freq / resonant freq
  • WA3VEE, Ron:

21 Tech Net: 2026-01-18

My Week in Radio

  • RTTY Round Up got me the last couple states I needed on QRZ with the new callsign
  • USB adapter for CW key on computer
    • use it with websites
      • vband for online CW chat
      • morse invaders
        • keying CW for video games is improving my accuracy
  • Continue to practice to improve reading CW
  • Visited the hamfest in Harrisburg, but didn’t buy anything
  • Headed East tomorrow to help install antennas for field day next weekend
    • see how others do this more reliably
    • learn some better practices
    • my antennas usually get replaced regularly for repair or boredom
  • Nothing for swap and shop

Others

  • WB3LNY, George:
    • Hamfest in Harrisburg
    • local 6M repeater
    • modifying a big icom battery
    • got a new IRLP node from a guy in Chicago for portable use
  • KA3TKW, Tom:
    • keep your groups.io account active
    • John Holler passed away
    • Jeff Dipolo operating VHF contest on: 50.140 USB, 146.52, 446.00
      • Chambersburg
    • new satellite: KW2
      • 436.950 down
    • Ham lunch on last Thursday this month
      • Glen talking about directional beverage antennas
      • show and tell
      • Riley will be there
  • VE3HOH, Pete:
    • shared some history with John Holler
    • helping restore service to a local repeater
      • introducing and balancing some more battery backups
    • some work on power supplies
  • K3DMM, Denny:
    • dabbled in NA QSO party
    • trying some DX work to Fiji
  • KD3BVC, Jeff:
    • just getting started with his Baofeng UV-5R
    • built a jpole
  • N3RBG, Jeff:
    • 50 W, Comet GP-6, 70ft up a pine tree, good signal to/from Plymouth Meeting
21  ka3tkw  net  technet 

985 Workbench: 2026-01-12

My Week in Radio

  • RTTY Round Up a week ago got me Oregon, the last state I needed for all 50 states for this current callsign
  • Strung up the 80M EFHW, found a lower SWR with counterpoise removed.

Others

  • W1RC, Mike:
    • looking for a 2M transverter for his Elecraft radio
    • getting Yaesu Fusion working to check-in to a net
      • doesn’t like the audio so much
  • W8CRW, CR:
    • helping chuck and george at the field day site on thursday
  • K3EMI, Randy:
    • putting up an OCF dipole on the roof in nice weather
    • coax is super-stiff
  • KC3SCY, Luke:
    • setup the new riser for his desk
    • almost done building a power supply for a transmitter he built
    • some CW
    • excited for WFD
  • K9CAN, Kris:
    • from Eugene OR
    • hosting a winter field day site on a mountain
    • working on a new antenna project
      • multiband
      • modular
      • 3d printing parts for it
      • doublet pieces
  • NA3CW, Chuck:
    • Thursday work session at field day site
      • 9:30am-dark
      • got ropes and pulleys into trees
      • next up
        • launch the dipoles
        • service the beams
        • saturday
        • cold and dry
    • Joe’s tuner is coming alive
      • steppers working in one direction and chattering in the other
      • feedback POTs reading fine
  • KC3OOK, Bill:
    • net control for Simplex Net and for Welfare Net
  • W3KZG, Scott:
    • organizing shack
    • repairing and updating an old export 10M rig
    • preparing trailer for field day
  • W3QP, Tim:
    • SOTA trips coming up in February
  • AF3Z, Jim:
    • SKCC
      • scheduling operators
      • operated saturday and this afternoon
      • worked WA and CA
  • KC3SQI, Wayne:
    • need to drop the new mast to fix 10M vertical dipole
    • TV pre-amp needs service too
  • WA3VEE, Ron:
    • Welcome K9CAN, Kris.
    • Helped at Field Day site
      • watching George with the potato gun for shooting high lines into trees
      • Met a new ham, KD3CJH, Kiana.
      • worked 8 countries testing beams at FD site

Questions

  • AF3Z, Jim:
    • For WFD, How do we expect winter weather to effect electronics and radio gear? Any likely failures?
    • KC3SQI, Wayne:
      • probably no worry here in PA.
      • in Rocky Mountains, CO, it did make a difference.
        • wire would kink but not unkink, breakage
    • NA3CW, Chuck:
      • crystals and oscillators will have a temperature coefficient
      • transistors won’t care
      • operators will be stiff
      • LCD screens will slow response, freeze and turn black
      • Li-ion batteries will degrade faster
      • starting generators can be difficult
    • W3KZG, Scott:
      • trailer runs solely on battery + solar
      • 300Ah 13V battery
      • Summer field day used 18% of the battery to run FTD-10 radio for 2 days
    • KD3EE, John:
      • batteries may need to be swapped to keep warm, like digital cameras
      • has seen LCD on radios stop updating in cold
    • W3QP, Tim:
      • some batteries, like LiFePO, don’t like to charge below freezing
    • AC2EG, Eric:
      • Commercial-rated (not industrial) laptops can have trouble below 25F. maybe won’t boot.
    • W8CRW, CR:
      • LiFePO with a good BMS will keep it from charging in damaging (too cold) conditions
    • AF3Z, Jim:
      • operating CW can be hard in the cold
  • WA3VEE, Ron:
    • For those in HOA, what might be a successful, inside antenna? Maybe not in the attic?
    • AF3Z, Jim:
      • Do you really need to be horizontally polarized?
        • 10M dipole isn’t huge.
        • mobile ground plane verticals
    • WA3VEE, Ron:
      • horizontal will be best, but either way, I guess
      • wires taped to the ceiling?
    • AF3Z, Jim:
      • magnetic loops?
      • 16 feet for a dipole?
    • W3KZG, Scott:
      • 11M dipole hanging in a tree, 6ft from the ground: similar to hanging it from the ceiling.
        • split right off the coax, speaker wire
      • just try it
      • try a magmount vertical
      • try it on a balcony
      • near a window: magnetic loop
    • KC3SQI, Wayne:
      • use 11M whip antennas, and trim it
      • wire across the wall
      • work from the balcony
      • drop a piece of wire from a higher floor
      • outside will avoid inside RFI
      • inside can mess with other electronics :)
    • W3KZG, Scott:
      • may have an 11M whip to donate
    • W3QNZ, Joe:
      • recycled a pota antenna made of scrap wire and a cobra head
      • moved it into the attic
    • KD3EE, John:
      • may have a loop antenna to lend
      • run wires down the hallway or the loft
      • use lower power, digital modes, CW, weak signal for results

985 Workbench: 2026-01-05

My Week in Radio

  • 80M EFHW today for better receive to place 21.6M-long EFRW
    • realized it may be better listening as it’s resonant
    • Random wire may be “noisy”, because tuned other than what I want to hear
  • worked some contests:

Others

  • W8CRW, CR:
    • 985 nets
    • Bill’s for antenna building + computer fest
  • AA3LH, Leon:
    • playing with 1:1 baluns on G5RV
    • seeing different antenna performance through the week
    • quicksilver balun is doing really well
  • WA3VEE, Ron:
    • happy new year
    • field day work this week
      • wednesday meeting
      • thursday building
    • RPi 3B+ for an allstar node
    • 2 VE sessions:
      • Passed a local student for tech license: Kiana
      • Passed 8 more on Saturday
    • If you’re an extra, see about being a VE.
  • KC3SCY, Luke:
    • building a 1929 transmitter and power supply on contract: basically done.
    • 75M AM recently
    • At Joe’s for winter break to build a desk riser, etc.
  • KC3RFG, Jim:
    • built a clear, stackable case with a a fan for his ham clock.
  • NA3CW, Chuck
    • final testing of Joe’s tuner project
      • building a wooden test stand for maintenance of the tuner
  • W3KZG, Scott:
    • checked out field day site
  • KC3MAI, Joe:
    • visited Bill’s for dipole build
  • KD3AIS, Tim:
    • visited Bill’s for dipole build
  • W3MFB, Mike:
    • 80M DX nets and contacts
    • using remote web-SDRs to see how far away he here’s his net contacts: many states away, maybe even Europe
  • KC3NZT, Harvey:
    • played with computers at Bill’s
  • KB3ILS, Keith:
    • WFD chairman
    • Winter Field Day
      • Jan 24-25
      • active planning, building, testing
      • 14 people at Bill’s
      • master class in soldering dipoles
      • Thursday will be installing antennas
    • Working straight key night, including AF3Z, Jim.
  • WA3KFT, John:
    • stranded wire is nice, but solder joints of stranded can make a weak point
    • preferring copper-clad steel wire far antennas.
    • has stayed up for 20 years before needing replacement

Questions

  • KD3EE, John: I want a 2-meter antenna to build that’s simple, sturdy, and I can pull up into a tree. I have the 1/4-wave ground plane and a slim jim already. Flowerpot antenna looks cool. Suggestions?
    • WA3KFT, John:
      • j-pole of copper pipe: tee, elbow, pipe
        • plans everywhere
        • sweat solder some joints
    • WA3VEE, Ron:
      • X50 that already has the ground plane radials
    • W3MFB, Mike:
      • use a bit of conduit as a counterweight
      • pull a 25-foot antenna up into a tree above the mount point on that conduit.
    • KC3NZT, Harvey:
      • see W6NBC’s website for home-made antennas
        • including slot design made of aluminum foil tape and pvc
        • delta loop for a bit of directional gain
    • KC3RFG, Jim:
      • second the j-pole: rugged
      • pipe is thick for better bandwidth
    • KD3EE, John:
      • Mike: i love the idea of hoisting above the mount point
      • Harvey: I have all those pieces here: i can have something by day break!
  • KD3AIS, Tim:
    • Why can it be heard on the digital side?
    • W3DIB, Greg:
      • Yes, you are hearing the intermod on digital.
      • echolink/allstar is external to the repeater, not integrated, so that radio is hearing the intermod.
    • W3GMS, Joe:
      • You should not hear intermod for digital people.
      • 146.385 receive audio is sent to a simplex link, which is sent to Joe’s house, then into Allstar node to the internet.
      • People connecting via digital, goes to node at Joe’s, processed, then sent up the simplex link to the repeater.
      • People connecting through digital shouldn’t exhibit intermod.
    • NA3CW, Chuck:
      • Those people you thought were digital, may have been analog.
    • W3DIB, Greg:
      • technically, if a digital person is listening to another digital person, it’s just a VOIP call, no RF really needed.
  • W3MFB, Mike:
    • What’s the history of an HF radio that’s been “MARS-modded”, and what’s its purpose?
    • WA3KFT, John:
      • MARS frequencies are near, but outside the HAM bands
      • In some radios, like IC-706, you remove a diode to allow it to transmit anywhere.
      • Make a ham radio able to transmit on any frequency.
    • WA3VEE, Ron:
      • MARS = Military Auxiliary Radio System
    • W3GMS, Joe:
      • commercial radios sold are not allowed to transmit outside amateur band for “type acceptance”
    • NA3CW, Chuck:
      • big manufacturers sell lots more gear beyond ham operators.
      • those radios can be used by other people
      • keep the average “appliance operator” from wandering out of band.
    • W3MFB, Mike:
      • Understand the motivation to make it difficult. It’s illegal to work outside band on a radio not type-accepted in those bands.
  • KC3NZT, Harvey:
    • How do existing filters work when out of band?
    • NA3CW, Chuck:
      • Yes, they still pass through existing filters, so maybe not very clean.

21 Tech Net: 2026-01-04

My Week in Radio

  • muted the APRS channel on my UV-PRO, so I don’t need to hear that squawking away
    • there is an option to mute digital, but it only works when it recognizes it’s digital
  • been testing a doublet built from:
    • a split speaker wire,
    • 44ft end to end
    • a 4:1 balun
    • choke balun
    • 30 FT8 contacts on 20M at 1W for a park activation
  • 80M EFHW today for better receive to place 21.6M-long EFRW
  • worked contests:
  • gave one of Tom’s cool little ATS radios to a friend’s kid, get him bitten by the bug

Others

  • K3EA, Greg:
    • special event station
    • this past weekend:
      • rtty contest
      • psk31 contest
    • NA QSO party, CW next weekend
  • WB3LNY, George:
    • working on some 12V power supplies
  • VE3HOH, Pete:
    • ordered some radios
    • great tuner
  • KA3TKW, Tom:
    • RS-40 pass at 8:40 tonight
    • 437.625
    • no special equipment needed
    • trivia net on wednesday
    • Saturday Hamfest in Harrisburg, W3UU
    • new commercial satellite:
      • AST bluebird 6
    • mod firmware for ATS v4 radio
      • waterfall
      • s17432
      • decodes CW and RTTY
    • DigiRig Mobile: $49
      • audio
      • PTT (no need for VOX), so better than just a USB sound card
      • connect lots of radios
    • lots of SSTV
    • ordered a UHF Moxon SSTV antennas
      • big in RC airplane world
      • range video LLC
  • K3DMM, Denny:
    • not much luck with SSTV yet
  • KC3VZU, Bob:
    • not getting to the ham fest
    • working on full-band radio in truck, replaced the mic
  • W3MW, Don:
    • finishing wiring of antennas
    • getting shack back in order
  • KC3ZBI, Ron:
    • doing paperwork to do a ham radio program for a local school
  • KC3EWN, Curly:
    • new Arrow antenna
    • Icom W-32A, full-duplex, 5W
    • ready for satellite
  • K3EA, Greg:
    • DigiRigs have wiring for old rigs
  • VE3HOH, Pete:
    • watch 401MHZ and 401.025 for occasional satellites
21  technet  net  ka3tkw