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Attached is the .pdf of the schematic Q tester on a white background

Attached is the proposed circuit. It uses loose coupling to a parallel resonant tank circuit via 1pF caps and a high impedance buffer amplifier consisting of a J310 and two 2N3904 emitter followers to

Mike, With the ADC project, I plan to revive a research scenario that has been partially done.? Use the K8IQY, G3UUR, K7QO and other matching techniques on a batch of 100 9.000MHz crystals.? Compare

I have a collection of 60s', 70's & 80's vintage semiconductors available. I've begun a Google spreadsheet with descriptions as best as I can find information. Several of these devices are of

Below is an update on the schedule of speakers and presentations for the Southeastern VHF Society Conference. The conference will be held at the Quality Inn at Exit #4 in Clarksville, TN April 4-5,

Hi Chuck, We have plenty of crystals, but they are all the frequencies for the different VXOs used in the 1W and 5W radio kits. The IF frequency crystals are all gone (apart from a handful of each in

Hi Dave, Thanks for the intel on Dan's Small Parts source for MV1662 varactors! I am submitting an order on Monday. "I even used a 3 terminal regulator device in place of the zener in mine *shock

I had an idea to combine many different test jigs into a 80mm x100mm 2 layer PCB. So far I have the following test jigs on the board: 1. Inductor Q/Self resonant frequency test jig. This connects to

If anyone is curious, I have all the data files on github for my take on the 2N2-40+ https://github.com/ku4qo/2N2-40-plusplus The VFO, BFO and Xmit signals are synthesized, the output amp is the now

Chuck - the value of 43V is the one that sticks in my mind for PA sections. I bought a small bag of them for that very purpose. My SST, despite not having an IF amp, is sensitive enough on 20. For a

Thanks for the transformer recommendation Mike. I'm currently assembling a 2N2/20 from a kit, but am hoping to do a 2N2 scratch build afterwards, if I haven't burned myself out by then! With that in

Wayne Thanks for the Stomp Reminder.? I have fond memories of that event.? Hope to see you then. 72 de Gary W0ITT (Yeti from some years ago.)

Well, if there is an unassembled kit with Parts, PCB, and Enclosure looking for a home, I'd be interested in knowing cost plus shipping to 19047.? ?Please email me directly.? ?Thanks!? Howard,

Thank you!? ?I downloaded and created a new directory, 2n2xx.? ?That's a start.? ?Next step: Dive into my junque box of resistors, capacitors, diodes, transistors, crystals, pots, etc.? ?Not

Just checked. It's in the files section -- along with the AZ Scqrpions' layout board and other tidbits. Here's the QRPp issue.

Do you have the Winter 1998 issue of QRPp? It is a construction manual for the original 2N2/40 that Jim Kortge developed: broken down by subcircuits with tests, drawings by Paul Harden, parts list,

Are there any other hard-to-find parts in the 2N2/40+ Transceiver that has a replacement that can be found? It seems hams are gravitating (is this a real word) towards this radio to build Manhattan

Sorry, this was not intended for the group. I'll be more careful.

Yes, it's very readable when I save the image and view it with gthumb in debian Linux. Thanks a lot. Question, if I may.? In the kitsandparts inventory, at one time, there were a large number of

Chuck, I'm still looking for the HC-49S data that I have, but I did find some data from a batch of 8MHz HC-49U crystals that I have. I used the method outlined in Jim K8IQY's excellent paper on