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Latest Topics

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Circuit Board Construction Question Mar 23rd 2012, 13:10 4 4,546 on 15/9/13
10 Meter AM Nov 14th 2011, 19:24 4 4,753 on 14/12/11
Baofeng UV-3R Harmonic Fix Nov 11th 2011, 14:18 1 5,048 on 11/11/11
Novice Trivia Question: 10 meters Oct 26th 2011, 18:55 2 3,955 on 1/11/11
European AM'er Needs Help Aug 25th 2011, 19:45 3 3,902 on 23/11/11
How to Set the Temperature Setting On a Soldering Station Aug 16th 2011, 12:18 1 5,648 on 16/8/11
How to Remove Cigarette Smoke from a Newer Solid State Transceiver? Aug 8th 2011, 18:15 10 12,022 on 16/9/20
Switching Open Wire Feedline Bewtween a Transmitter and Receiver? Aug 8th 2011, 13:34 1 5,492 on 8/8/11

Latest Posts

Topic Author Posted On
Antenna launchers WB7AEA on 10/9/20
W1AW Station Manager, Joe Carcia, NJ1Q, uses a compressed air cannon that launches a tennis ball attached to fishing line. He always seems to get the line over the branch, or fitting he was aiming at. It seems to be the preferred method, but the sling-shot works, too. Some hams use drones for such things now. I once heard a story about a trained squirrel.....

Personally, I hire a tree climber. He installed a pulley on each tree intended to be used as an antenna support. It's a permanent solution, provided each halyard (rope) is maintained. Eye hooks are used to secure each pulley. Works great and no worries during wind.

WAS endorsement delays N0YO on 4/8/20
You can always call HQ 860-594-0200 and ask for the awards department. The staff is at your service for such concerns and you'll get an answer faster.
Contact Stamp Question K5CKS on 30/7/20
The ARRL Headquarters staff is coping with a high volume of requests and a reduced staff, due to the pandemic. Please be patient. I am forwarding this thread to the appropriate supervisor.
Nothing works as described?? WA5TEF on 30/7/20
I have heard that changes made to HRD causes issues; try reviewing this link from HRD; it should help:

Desense Issue BaoFeng2020 on 17/7/20
The de-sense effect may be happening not in your repeater, but in the handheld that you are using to test the repeater. If you are listening to the output on you handheld while you are close to your repeater, your handheld will de-sense from the transmitter of the repeater. A 25 Watt repeater that is only 600 kHz away from the frequency you're listening on can de-sense an inexpensive radio. De-sensing of inexpensive handhelds caused by stations close to the tuned frequency is quite common. Try another radio of good known quality, first.

Also, if the tuning of the repeater's duplexer cavities is off just a little bit (caused by mechanical vibrations, dropping it a few inches, or by someone trying to tune it by ear), it will de-sense the receiver of the repeater. Tuning the cavities for maximum rejection should be done while viewing a spectrum analyzer.

Bob Allison
ARRL Lab Assistant Manager

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