US-8843

I activated US-8843, State Game Land 145. I got 9 QSOs before day change (at 2W-4W) and another 18 QSOs after day change (at 6W). I setup the tactical delta loop, and grounded the black side that passes through the toroid. The feed is the red side. It tuned nicely at about 1.5:1 on 20m and 40m. It was slow going at 2-4W, but I was being seen in PSKreporter.

RX with Disconnected Antennas

K3IR/145.230MHz for the Morning Grind was clear, but low power (S3-S5) on the Quansheng and TH-9800 base. It turns out that both antennas were disconnected at the window for overnight storms.

Scanning Amtrak

While waiting for the train in Exton, PA, I looked up Amtrak frequencies for the Keystone corridor and found they’re mostly all 160MHz-161MHz, so I scanned there. I didn’t hear train traffic in the time, but I heard Chester County emergency dispatch on 160.185MHz. I can also hear it at home with an outside antenna.

SPARC Elmer Night: 2025-07-15

We discussed meshtastic as always. I’ve been seeing more nodes, especially in York.

I re-soldered and terminated my small 1:1 chokes, since the ends had ripped off on last activation.

sparc  elmer 

US-1418

When activating US-1418, Sam Lewis, I accidentally split the activation across 0000 UTC. Fortunately, I still got enough for the second day. I found some of my chokes broken, so swapped cable around a bit. I threw the 40M EFHW into a tree, and got 12 contacts, on FT8, on 15M and 40M.

71-ft EFRW

I went back to my favorite 71-ft EFRW for the home antenna wire. The EFHW was requiring tuning, so I figured it may not be worth having.

efrw 

Broken Btech UV-PRO

I further tested my UV-PRO to find it was transmitting less than 250mW when set to 5W. I compared it to another radio using a nearby tinySA. I RMA-ed it and mailed it back to BTech for repair or replacement.

btech  uvpro  rma 

985 Workbench: 2025-06-30

My Weeks in Radio

  • traveling
    • Chino Hills State Park near Los Angeles
    • 2 activations
    • hiked and biked my gear in on my back
  • Field Day QRP, emergency power, on the patio, at home, 50 contacts = 650 pts

Others

  • W8CRW, CR:
    • 985 field day
  • KC3HQZ, Jean:
    • 985 field day
  • AC2EG, Eric:
    • new the group and field day
    • rather build than buy, but using echolink right now
  • AA3LH, Leon:
    • mostly dups at field day
  • KV3JGB, :
  • KC3SQI, Wayne:
    • 10 meter antenna mast assembled and ready to go
  • KC3WWC, John:
    • (making it in over RF)
  • KC3TYX, Vic:
    • field day in maryland
  • NA3CW, Chuck:
    • Field day prep, operation, cleanup
    • PM/AM Net on Sunday
  • KC3OOK, Bill:
    • hosted a modified roundtable on 985 simplex, since power was out on repeater
    • simplex net
    • field day
  • KD3EMS, Chris:
    • 985 field day observing AF3Z operate along with NA3CW
    • 7-8 contacts
    • need to get general license
  • AF3Z, Jim:
    • field day
      • CW with luke
  • W3KZG, Scott:
    • 985 field day
  • KC3SCY, Luke:
    • 985 field day
    • logging had some trouble
    • pretty smooth, otherwise
    • working on CW
    • planning to chase 13 colonies
      • work them early in the morning
  • W3QP, Tim:
    • K3H, Pennnsylania Homestead Festival in Kutztown
      • looking for operators for the weekend
  • W3MFB, Mike:
    • heard VHF packet propagation, so made some contacts
      • 6m
  • WA3VEE, Ron:
    • 1400 contacts total at field day
    • collecting photos from field day for the smugmug gallery

Questions

  • KC3HQZ, Jean:
    • Why does a GOTA station have a different call sign from field day activities?
    • AF3Z, Jim:
      • GOTA is meant to encourage newcomers and guests.
      • It’s a bonus station that doesn’t count in the total simultaneous stations.
      • May be worth more points on its own.
    • W3MFB, Mike:
      • helps keep count of contacts made by newbies and guests.
  • KC3SQI, Wayne:
    • Considering changing from a Windom to a Hex Beam (25lbs) with a 1-foot base pole to the rotor, Would a small ChannelMaster TV antenna rotor work without a thrust-bearing at 30 feet?
    • KC3OOK, Bill:
      • Bill is new, but…
      • 25lbs sounds like a lot for an antenna, so might tend toward the better rotor.
    • W3MFB, Mike:
      • Agrees with Bill, spring for the better rotor.
      • Has seen a TV rotor drive lighter (6lb) antennas, but that’s much lighter.
      • TV antennas are only 10lbs or so.
    • N3OGF, John:
      • destroyed a radioshack rotor in high wind with a kushkraft
    • W3ZKG, Scott:
      • rotor doesn’t have a weight spec, but try to keep the rotor as close to the antenna as possible.
      • 25lbs seems heavy.
      • lesser rotors use plastic instead of bearings
    • WA3VEE, Ron:
      • some specs on google suggest 15lbs capacity.
      • consider the extra weight of ice
    • KC3SQI, Wayne:
      • may try the thrust bearing and lighter rotor
  • KC3WWC, John:
    • I have a long EFHW for 80M, but it’s hard to get lined up on all bands, so I need the tuner to touch it up for half the bands. If I need the tuner for some bands, is there much benefit to this EFHW over a 71-foot random wire I really liked.
    • NA3CW, Chuck:
      • RG58 is giving loss
      • Generally, you don’t want to tune high SWR through “thin” coax
      • tuning at the wire would be better
    • W3QP, Tim:
      • It’s normal for EFHW in trees to not necessarily line-up
      • Don’t know efficiencies of 49:1 vs 9:1 vs 64:1. That could make a difference.
      • stack cores to handle more power in the transformers
      • there are ways to measure with nano-vna.
      • it depends what SWR you’re pulling on each band.
      • transformer has different effeciencies on each band.
  • KD3AIS, Tim:
    • As a newer ham, not a general yet, listening on Yaesu FT-991A to traffic, is an external screen useful?
    • W3MFB, Mike:
      • He operated the 991A at field day, and the waterfall is pretty low-res, but wouldn’t bother with a larger screen.
      • recommends using ears and turning the dial
      • listen and make sure he can understand the station, write it all down, then contact.
    • W8CRW, CR:
      • agrees with Mike, listen
      • but also has a display connected to his radio as a bonus
    • W3KZG, Scott:
      • also has a DX-10 with the built-in display and an external screen.
      • didn’t miss it on or off on field day
      • use a DDI cable to ensure no feeding voltage back into the radio
    • NA3CW, Chuck:
      • had Ron’s 710 with the little screen, plugged into a big screen.
      • easier to see settings and meters
      • especially when visitors were trying to see
      • bandscope got sort of useless with higher noise levels
      • for bands that come and go (6m, 10m), it’s good to see intermittent traffic
    • KC3WWC, John:
      • I like the waterfall, so I spot activity, like lots of CW.
  • W3MFB, Mike:
    • Are 6M and 2M beams at field day site always available for use?
    • NA3CW, Chuck:
      • as long as it’s up, it’s available
      • it’ll need coax

21 Technet: 2025-06-29

My Weeks in Radio

  • traveling
    • Chino Hills State Park near Los Angeles
    • 2 activations
    • hiked and biked my gear in on my back
  • Field Day QRP, emergency power, on the patio, at home, 650 pts

Others

  • K3EA, Greg:
    • in charge of antennas at local field day
    • 13 colonies coming up: https://13colonies.us/
    • Marconi Memorial contest
    • see the calendar
    • monitor FT8 or calling on 6M
    • good HF this week
    • Guyana: 8R1TM
    • Russians in Mozambique: C94RRC, C93RRC
    • LotW is undergoing maintenance
  • KB9AWS, Bernie:
    • hearing VHF openings in the morning
  • KC5DRI, John:
    • conversations with truckers while traveling NC on simplex
    • travel using repeaters
    • got to dayton this year
  • KA3TKW, Tom:
    • SSTV coming around july 4 from ISS, watch email
  • KK4KKW, Steve:
    • POTA Hunting
    • visited SPARC for field day
  • K3DMM, Denny:
    • heard lots of ISS contacts on field day
    • saturday is firecracker hamfest: postal picnic grounds
  • KC3NWN, Jim:
    • contact from a mobile at camp right now
  • VE3HOH, Pete:
    • local field day in macadoo
  • KC3VZU, Bob:
    • setting up a wire antenna and an HF rig
  • W3MW, Don:
    • lots of work getting antennas up
    • trying 10GHz, but blocked by foliage
21  ka3tkw  technet  net 

ARRL Field Day 2025

I operated the last 3 hours of ARRL Field Day. My station was at home on emergency power and QRP, so 1E class. I made 50 contacts so that earned me 650pts.

arrl  hf  fieldday