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Thanks! I've submitted a construction article on the build to CQ magazine, but no words yet. Jack, W8TEE

Very nice build Jack, thanks for sharing the jpegs. 72 WA?ITP I love this radio stuff. www.wa0itp.com www.4sqrp.com

All: I just finished the Kits and Parts 5 Watter for 40M. As you can see, it's not a beginner's board: but Diz provides details that, in conjunction with Chuck Adams' excellent assembly manual

My memory of the early days of SSB were that it really started with phasing rigs. 9MHz. Everything below 9MHz was LSB and everything above 9MHz was USB. We can do that again with the QRP Labs Rx. I

I find I can't wear those headbands, with or without my readers on, they make me feel nauseous. Looks like it may be time to experiment with the USB microscope for smd work. -- Terry VK5tm

Bob I concur that its more fun to not use the sa612, except to note the k2 uses one in the product detector. If you don't have a qcx they have a wonderful receiver. It uses a massive number of parts

The filter can be easier but the IQ/phasing a large part of the work is at audio. Doing it with high speed switch ICs can simplify it or even DBMs for the RF work. A pair of DBMs and a twisted wire

Hi Bob, I experimented using two 602s to make a Quadrature Demodulation receiver IF. Used a 7MHz crystal because that's what I had in my bin of parts. Lowered part count of phase audio shift by only

Be vareful of dollar store readers. I bought a 4+ last year and they are ground to 4+ only in the center. A good pair (maybe $5 to $25) are ground all the way across so you can look out of them off

BTW: I am looking at using the QRP Labs receiver module with the phase shift network to replace the 4.915MHz IF in a design similar to the Burdick designs. To eliminate the crystal matching. Bob

Kurt, My understanding is the 602/612 have limited dynamic range. It was interesting to read the development of the Burdick designs. I guess the K4 is completely different. Bob Macklin K5MYJ Seattle,

Bob I have some measured 4915 khz xtals. Email me if you wish, see qrz. Curt wb8yyy

Bob Cool stuff. I enjoy reading your posts. The k2 and k3 use passive mixers, hence the rf preamp. I use the preamp nearly 100 percent with my k2, as its light on front end gain even on 80m, and its a

I had forgotten about BitChute... Jack, W8TEE

Found a source for the no longer available Harbor Freight punch. Northern Tool and Equipment has it both online and in store for $27.99. The link -

And don't forget they're... Larry KA5T

Greetings! I am happy that the 2015 Aluminum Enclosure Construction video by K7QO is back up! Thank you Chuck, K7QO for finding that and restoring it for historical purposes, whatever. So much of our

..I also pledge to learn the difference between "their" and "there". -- William, K6WHP "Cheer up, things could get worse..so I cheered up and, sure enough, things got worse!"

While this thread seems to be fragmenting, I would like to add to the fork in the road regarding the maintaining Chuck's videos for fair use by interested hams. Chuck, Are you aware of BitChute

I do like BillC... I need readers for some things +1.5 both eyes and no other astigmatism. However I can buy at the dollar store +1.5, +1.75, +2 all the way to +3.5 "readers" for doing close fine