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Hi Steve I'm not planning to offer custom combinations of bands. I am planning to offer the existing 80/60/40/30/20 model and a new 20/17/15/12/11/10m model. The configuration can support up to 6

Lance I don’t mean to hijack your thread - what scope are you using - looks Mac based? thanks! Michael -- KD7PTZ

I am interested in a QDX that will operate 40-10m, and have some time to do a build soon. Should I go ahead and order now and do one of the unofficial high band mods that have been posted here, or

I once had a tour of NORAD in Cheyenne Mountain near Colorado Springs, CO. The buildings in the Mountain were built on springs which was fine until they tried to connect Ethernet between the

Willie, the currents in cloud to ground lighting strokes are measured in tens of thousands of Amps, with a very short rise-time. Although one can try to protect, as much as possible, physical

Tell us Jim. :-) 73, Cliff, AE5ZA

The last time I was in NH (at the Portsmouth Liberty Mutual office) I noticed that every roof parapet edge had multiple little pointy rods about a foot tall, spaced every few feet. I assumed that this

Thank you. I was able to crank up the temperature on the soldering iron to about 650°F and reflowed all the enameled wire. It looks better - the noise floor goes up when an antenna is connected vs

I have been following the news and situation on twitter, I love some of the videos of all the mcgyver’ed kit you guys have created and used to good effect True ham radio spirit of innovate,

Happy news today. Liberated Kherson! I really want to go home to my native Nikolaev! Sorry, couldn't resist. -- 73, Oleh, UY2ZA

As promised, I'll let you know. But I will upset the skeptics and report on the use of QDX with IRF-510. Power - 8 volts. Carried out about 600 QSO on 20 meters. The transmitter is working 66

Gold words. Each of the three points works separately. So it's easier to understand. -- 73, Oleh, UY2ZA

Everything must be steel, connections only by welding, withstand currents of 1000 amperes, and no steel - coupr transitions. Do not confuse lightning protection with RF grounding. -- 73, Oleh,

Hi, Brad There is a classic picture in lightning protection literature - a small building engulfed in flames after a lightning strike, with an arrow pointing to the ground wire from a corner of the

Hi all, Next monday, November 14th, is the monthly QCX WARC Party. See https://www.qrp-labs.com/qcxmini/qcxwarc.html for all information. Join the discord page in the *#qrp-operation* channel to post

A ferrite with only one turn is gonna be useless at 0-30Mhz. You need to add a ferrite with maybe 4-6 turns, but this depends upon the grade of ferrite and it's size. More turns = highest impedance at

Thx I will.

Al, Thanks, I've pulled the FETs...I'll check later. V

I wondered about that too and found the answer here. Grounding of metal buildings - E&S Grounding Ask the Experts (esgrounding.com) ( https://esgrounding.com/blog/grounding-of-metal-buildings ) Dave

Alison, Please tell us more! 73, Willie N1JBJ