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Listen to Pete Juliano's Interview on "QSO Today"

October 30, 2015

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http://www.qsotoday.com/podcasts/n6qw

Juliano -- Pete

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Manhattan-style Vacuum Tubes: "An Evolution of Thermatron Homebrew Techniques" by Grayson Evans

Grayson Evans was at Dayton. Scheduling problems prevented him from being interviewed by ace correspondent Bob Crane, but Grayson was kind enough to e-mail us the essence of his presentation. And it is really wonderful. He brings the advantages of the Manhattan construction technique (fast prototyping, all components on the same side of the board, easy modification) to the world of tubes (aka valves or, as Grayson prefers, thermatrons). We also see in Grayson's work an admirable willingness to bridge the digital-analog design, to bring into his rigs the best of the old and the new. Thanks Grayson! Grayson writes: An Evolution of Thermatron Homebrew Techniques For a long time I have been trying to develop some techniques to prototype Thermatron projects as easily as the typical ?Manhattan style? solid-state construction. Thermatron projects you see now-a-days still use the traditional technique of mangling aluminum-drilling and mounting everything to a ?bud?

Re-purposed Computer Power Supply Box Provides a Home for a BITX Transceiver

Jaydip VU3JOJ came up with a really inventive way to box up his new BITX transceiver. Nicely done. I especially like the way he put the speaker in the space intended for the fan. Very nice. This appears to be one of the new BITX 40 meter "modules" described in yesterday's blog post. FB! How fortunate the new board fits in the power supply boxes. That's very lucky. You know, I had an old computer power supply in my hand just yesterday. I almost threw it out. Obviously that would have been a mistake. Today was a BITX day. Using my BITX DIGI-TIA on 40 I had a long QSO with Rich N3TDE. Rich has a BIT20 built from a Hendricks kit acquired at Dayton. He takes it with him on the Appalachian Trail.

Ryuu's Receiver (Superhet using Si5351 and Color Display with IF at 10.7 MHz from JA2NKD)

The influence of Pete Juliano is spreading far and wide. Those little color screens attached to Si5351s seem especially popular in Japan. Above is the receiver of Ryuu JA2NKD. Below is the schematic. Click on it for a better look, or use this link: http://ja2nkd.c.blog.so-net.ne.jp/_images/blog/_206/JA2NKD/7MHzcolorLCDSchematics.jpg?c=a1 Ryuu's blogs are here : http://ja2nkd.blog.so-net.ne.jp/ and here: http://ja2nkd.blogspot.jp/ They are in Japanese. Google Chrome does a poor job at translating them, but you can get the gist. In any case the pictures are great and the schematics are understandable by all of us. Thanks Ryuu!

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Listen to Pete Juliano's Interview on "QSO Today"

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