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

CQ WW CW 2025

For this year’s CQ Worldwide CW contest I heard KH6J from Hawaii on 40M, but I couldn’t contact them. Locals weren’t worth anything except for unique CQ zones as multipliers. I kept it to 5W and made 20 contacts on CW. I turned up to send 25wpm, since everyone was going so fast.

I still rely on the excellent decoder in the R1CBU radio UI, but I’ve been practicing reading CW too.

contest  cqww  cw  hf 

21 Tech Net: 2025-10-26

My Week in Radio

CQ WW DX SSB Contest

  • 12 contacts
    • including Canary Islands near Africa
    • heard lots of places that couldn’t hear me: Galapagos
  • QRP (<5W)
  • Logged in World Radio League website and phone
  • exported a Cabrillo file in the right format to submit!
  • POLO didn’t seem to collect the right fields

Great Ham Fest in Harrisburg

  • Saw some faces from a couple different repeaters I frequent
  • Tom’s satellite presentation was great, and we had a really good pass to hear the astronauts talking to the museum in Indiana.
  • Bought a cheap power meter for HF and some connectors for it

ARRL Digi: 2025-06-08

I logged 11 contacts for the ARRL DIGI contest. The email from log system said I earned 41 points (based on distance). I kept it to 2W and 4W and mostly FT4 with some FT8.

arrl  digi  contest  ft8 

2024 ARRL 10m Contest

I did a bit of the ARRL 10m Contest all in CW. I keyed with my 3D-printed iambic paddle but relied on the X6100 to decode incoming signals for me.

I made 13 contacts across 10 states/provinces in 4 ITU zones. I used the Web2Cabrillo website to type up my handwritten logs and produce a Cabrillo file to submit to the contest.

arrl  contest  10m  hf  cw 

21 Tech Net: 2024-12-08

My Week in Radio

Contesting

I finished the FT Challenge. There was no special exchange this year. We could use other defined subbands in addition to the regular frequencies to alleviate crowding. We could work anyone, even if they’re not participating explicitly.

I operated QRP, so it was nice to find the quieter subbands and more FT4 activity. You earned multipliers for each 3000km, so I don’t really know on my score yet.

I found wsjtx-improved on the Debian Linux repository, so used that. I saw the color improvements, the better location labels with states, and it had filters.

AllStar

I learning some obvious things about AllStar: it can’t hear my DTMF if it’s currently transmitting, since it’s simplex, so it’s hard to control on a busy net.

Yagi in the Wind

Finally, I watched my home-built yagi flapping around on that windy day. I guess I can stop worrying about it, since it held up fine.

FT Challenge

This weekend was the FT Challenge.

I made about 112 contacts over 14 unique “letter grids”. I operated QRP (<5W), single operator, single radio. We scored points for each contact plus each 3000km distance on a contact, and the multiplier was that number of unique letter grids. I uploaded my logs, and it’ll probably be a while until I see an official score, but I figure I probably got about 2000 points.

ft8  ft4  digital  hf  contest 

ARRL DX SSB 2024

Setup

The SSB part of the ARRL DX Contest this weekend was a phone contest contacting DX stations only. I used the X6100 running 10W and 41-foot random wire out front window from Mountville.

Exchange

The exchange was:

  • Me: 59 <state> (PA, papa alpha)
  • Them: 59 <tx power>

Score

My raw score for my 42 contacts was 3 * 42 * 37 = 4662, but I’m sure some logs may be busted, so it’ll be less. I qualified as low power, limited antenna.

I logged directly into QRZ.com. I could take time to understand their entire callsign and then call back.

Logs I submitted:

START-OF-LOG: 2.0
CALLSIGN: KC3WWC
CONTEST: ARRL-DX-SSB
CREATED-BY: adif2cabrillo.com version 3.0.1
QSO: 14318 PH 2024-03-02 0331 KC3WWC        59  PA     VP5M          59  100    1
QSO: 14288 PH 2024-03-02 0416 KC3WWC        59  PA     V3O           59  1000   1
QSO:  7227 PH 2024-03-02 0438 KC3WWC        59  PA     KP4AA         59  1000   1
QSO:  7191 PH 2024-03-02 0455 KC3WWC        59  PA     EI7M          59  1000   1
QSO:  7181 PH 2024-03-02 0500 KC3WWC        59  PA     TM6P          59  1000   1
QSO: 14271 PH 2024-03-02 0609 KC3WWC        59  PA     EW5A          59  1000   1
QSO: 14264 PH 2024-03-02 0612 KC3WWC        59  PA     WP3C          59  100    1
QSO: 28379 PH 2024-03-02 1622 KC3WWC        59  PA     OM0R          59  1000   1
QSO: 28396 PH 2024-03-02 1645 KC3WWC        59  PA     OL8W          59  700    1
QSO: 28455 PH 2024-03-02 1707 KC3WWC        59  PA     SP8R          59  1000   1
QSO: 28499 PH 2024-03-02 1726 KC3WWC        59  PA     YT1X          59  1000   1
QSO: 28516 PH 2024-03-02 1728 KC3WWC        59  PA     IO5O          59  500    1
QSO: 28586 PH 2024-03-02 1735 KC3WWC        59  PA     TK4TH         59  500    1
QSO: 28582 PH 2024-03-02 1742 KC3WWC        59  PA     E70T          59  1000   1
QSO: 28589 PH 2024-03-02 1757 KC3WWC        59  PA     P40L          59  1000   1
QSO: 21280 PH 2024-03-02 1826 KC3WWC        59  PA     SP8R          59  1000   1
QSO: 21294 PH 2024-03-02 1830 KC3WWC        59  PA     II2S          59  500    1
QSO: 21298 PH 2024-03-02 1837 KC3WWC        59  PA     EW5A          59  1000   1
QSO: 21322 PH 2024-03-02 1843 KC3WWC        59  PA     II2Q          59  500    1
QSO: 21330 PH 2024-03-02 1850 KC3WWC        59  PA     SN2B          59  1000   1
QSO: 28649 PH 2024-03-02 2244 KC3WWC        59  PA     LT3E          59  1000   1
QSO: 21445 PH 2024-03-02 2318 KC3WWC        59  PA     P40L          59  1000   1
QSO: 21420 PH 2024-03-02 2322 KC3WWC        59  PA     8P5A          59  1000   1
QSO: 21345 PH 2024-03-02 2350 KC3WWC        59  PA     PJ5/SP9FIH    59  100    1
QSO: 21338 PH 2024-03-02 2352 KC3WWC        59  PA     ED8W          59  1000   1
QSO: 21290 PH 2024-03-02 2357 KC3WWC        59  PA     ZF1A          59  1000   1
QSO: 14237 PH 2024-03-03 0013 KC3WWC        59  PA     TM6M          59  1000   1
QSO: 14247 PH 2024-03-03 0020 KC3WWC        59  PA     9A1A          59  1000   1
QSO: 14258 PH 2024-03-03 0022 KC3WWC        59  PA     IO6T          59  500    1
QSO: 14258 PH 2024-03-03 0025 KC3WWC        59  PA     TI1T          59  1000   1
QSO: 14272 PH 2024-03-03 0028 KC3WWC        59  PA     LP1H          59  1000   1
QSO: 14284 PH 2024-03-03 0035 KC3WWC        59  PA     IO5O          59  500    1
QSO:  7194 PH 2024-03-03 0048 KC3WWC        59  PA     SP8R          59  1000   1
QSO:  7258 PH 2024-03-03 0101 KC3WWC        59  PA     J62K          59  1000   1
QSO:  7236 PH 2024-03-03 0241 KC3WWC        59  PA     NP4Z          59  73     1
QSO: 14330 PH 2024-03-03 0312 KC3WWC        59  PA     II2Q          59  500    1
QSO: 28308 PH 2024-03-03 1457 KC3WWC        59  PA     S55OO         59  1000   1
QSO: 28327 PH 2024-03-03 1511 KC3WWC        59  PA     9A7V          59  1000   1
QSO: 28367 PH 2024-03-03 1526 KC3WWC        59  PA     NP2J          59  1000   1
QSO: 28369 PH 2024-03-03 1532 KC3WWC        59  PA     SJ8R          59  1000   1
QSO: 21285 PH 2024-03-03 2332 KC3WWC        59  PA     HK1T          59  1000   1
QSO: 21338 PH 2024-03-03 2343 KC3WWC        59  PA     T42T          59  1000   1
END-OF-LOG: 2.0

Problems

I had some problems conveying my call over phone:

  • Stations heard my “3” as “2”
  • Stations don’t expect “WWC” (“whiskey whiskey charlie”), and hear it as “VWC” (“victor whiskey charlie”).

I made 42 valid contacts, and 4 were outside my privileges as general. I’m not accustomed to thinking about the boundaries in the SSB portion of the bands.

For my future reference, I noted voice ranges for general:

  • 3800-4000 khz
  • 7175-7300 khz
  • 14225-14350 khz
  • 21275-21450 khz
  • 28300-29700 khz

Question on Tuning SSB

During the contest, people were tuned all over the place and not aligned on 1 or 0.5 khz. I tried to align with them, but sometimes higher was easier to read, but does that shift my voice for them? RIT/XIT may have been the answer for longer contacts, but not for this quick stuff. A woman’s higher voice confounded me a bit as I tried to fine tune.

Conclusion

I had great fun yelling my callsign all weekend, and it’s the most I’ve ever used my microphone.

arrl  contest  ssb  dx