N6QW -- Left Coast Radio

 Detour Back to the Spilsbury Tindall SBX-11A Watch a You Tube Video about Jim Spilsbury the genius behind the SBX-11A who also accidently started an airline. This is a man with the KNACK! The Origins of Field Day -- Not Official! So the idea of Field Day is for hams to set up portable stations and demonstrate that with their trusty ham gear they can provide an Emergency Communication's  capability in the event of some disaster. Sounds noble and harkening back to the ham's creed. Well guys I think it is all a huge dark state conspiracy! So OK let us examine some facts.  For the most part it is a guy thing where under the guise (Like the Boy Scouts) to always be prepared  is also something else.  It also means a weekend away from the family. It is a chance to stay up late and play ham radio. It is a chance to drink beer and eat not so healthy foods. You can dress in that God awful Hawaiian Shirt you so dearly love; but others hate. It is a chance to brag about all of the DX you

  Why is this a different Rig? Well it is isn't different from many other rigs I have built. The Tried and True Plessey Amp stage is installed on either side of a packaged crystal filter and life moves  on with a standard bi-lateral IF module. This time the amps are fabricated using SMD 1206 sized components and the FT-23-43 cores.   The 2N2219 is used in the Bi-Directional Amp stage as well as the Driver Stage. The Final is an IRF510. The Mic Amp is a 2N3904 and the Audio Amp a 2N3904 with a LM-380N-8. The Nano/S-5351 provides the LO and BFO and this one has the larger ILI9341 Display. The physical size is 6X8X2.75 inches. I made an error when I cut the 1st front panel but with a bit of aluminum expanded metal to cover the hole it is now the back panel. It looks like I was trying to pay attention to provide ventilation -- Nope --just repurposing some material. I am looking to build a N6QW version of the Spillsbury Tindall SBX-11A Some very clever ham suggested this be called the &

  A WhoDunnit Shack Mystery... May 10, 2021 ~ A Clue to Who! Late Breaking News. I had a standard 40M LPF from Communications Concepts Inc. and swapped out the installed board with the CCI Board. That seems to have fixed the 40M issue. I was able to have the intermediate amplifier and SB-200 in line without any oscillations. All appears well! The bottom line -- A $1.30 SM Cap was the culprit. ********* As so often happens to me when a problem comes up, my brain goes into the fog zone and our analysis process can get confused. So in looking back I remembered that with one of the QRP rigs that was on 20 Meters and connected to the intermediate amp -- there was not an issue. So I went back to testing other rigs connected to the intermediate amp on 20 Meters -- no feedback. I should mention that I installed a "snoop loop" of wire through the last iron powdered core before the antenna on the LPF and monitor the signal on the scope. A clean signal is evident by the pattern displaye