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Latest Topics

Topic Created Posts Views Last Activity
Antenna analyzer vs feedline type Sep 21st 2012, 14:37 1 1,645 on 21/9/12
USB to Serial Port problems--Prolific Drivers Aug 3rd 2012, 18:27 1 1,878 on 3/8/12
Italian Phishing emails! Dec 13th 2011, 14:20 1 1,532 on 13/12/11
John K0GMO needs help designing SS Amp Nov 17th 2011, 15:53 1 1,419 on 17/11/11
1 Farad Capacitor to Eliminate Headlight Flicker? Oct 19th 2011, 13:14 4 2,436 on 9/11/11
History of Relay Rack Dimensions? Oct 17th 2011, 12:58 2 1,661 on 25/10/11
Miswired Selsyn Oct 13th 2011, 17:51 1 1,474 on 13/10/11
Stealth Antenna wire Sep 12th 2011, 12:51 2 2,106 on 13/9/11
Designing a ham bench Aug 29th 2011, 12:38 2 2,304 on 29/8/11
Can't find recent Hint and Kink Aug 26th 2011, 13:01 1 2,103 on 26/8/11

Latest Posts

Topic Author Posted On
SX-111, 120 VAC on Antenna Terminal! KL7JBB 2 days, 6 hours ago
It is likely that you need someone to do a close visual inspection to sort it out--perhaps even drawing a schematic of the circuitry connected to the antenna terminal. It is quite possible for ham gear to be extensively modified by former owners. Once in a while we hear of ideas that are actually quite dangerous--so much so that we don't want to repeat them here.

Zack Lau W1VT
ARRL Senior Lab Engineer
IC-706 and FC40 auto tuner AB8CC 1 week, 2 days ago
The problem is that the FC-40 is only designed to work with the transceiver control circuitry in the FT-857D/FT-897D--reverse engineering an suitable interface box is a difficult and time consuming exercise for most hams.

Zack Lau
ARRL Senior Lab Engineer
Antenna spacing KB8APS 2 weeks, 3 days ago
Hi Scotty KB8APS,

At least one manufacturer, JK Antennas, has offered to model their products and recommend stacking distances.

Another option is to search the Internet and copy what has worked well for others.
This page has good advice, but the distances may be impractical for HF.

Zack Lau W1VT
ARRL Senior Lab Engineer
Missing LoTW confirmations K4WA 2 weeks, 3 days ago
I'd bring up the LoTW QSO record and verify that it precisely matches the info on the QSL card. If it it does match, you have the option of submitting the card or getting the DX station to verify his info.

Zack W1VT
Missing LoTW confirmations K4WA 2 weeks, 4 days ago
I just got my 2015 PJ7AA LoTW QSLs.

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