SolderSmoke Podcast 243 (video) Hi7/N2CQR, uBITX, Success with High School Receiver Project
February 10, 2023
Pete N6QW had technical problems. He will be back for the next episode.
Podcast Audio: http://soldersmoke.com/soldersmoke243...
Travelogue: Bill in the Dominican Republic for all of January.
HI7/N2CQR Eastern tip of the island. uBITX and dipoles.
20, 17, 10. CW and SSB. SSB was tough and I had reports of RF getting into the signal.
Went to CW.
Worked VWS Mike KA4CDN and Walter KA4KXX on 20CW.
Finally moved up to 10 CW. Lots of contacts. Even though uBITX very QRP on ten.
I am modifying the uBITX now.
Copper tape shielding to keep RF out.
Low power out not the fault of the IRF-510s. The problem is the 2N3904s.
Will replace with 2N2222 in To-18 cans.
Dean KK4DAS putting KD8CEC software into Arduino. I gave up.
Who sent me this orphan uBITX?
SolderSmoke Shack South in final phase of construction.
SHAMELESS COMMERCE DIVISION:
Patreon!
Bezos Shopping!
DC Receiver Project
Local High School radio club.
Simple: Like Herring Aid 5 and Wes’s original.
Farhan’s four stages:
BP Filter, Diode Ring, PTO, AF amp.
Simple Colpitts PTO SURPRISINGLY STABLE
Simple and easy. No chips. No complicated circuits.
Guys have helped test out the design: Rick N3FJZ, Walter KA4KXX, Daniel VE5DLD, Stephen VK2BLQ
First session last night: We demonstrated build of the PTOs. They worked (thank God).
Open Circuits book.
Envelope Detection Controversy
Save the Antenna – Book “Losing the Nobel Prize” K1JT
MAILBAG
Dean KK4DAS 10 meter DSB! Tiny SA ULTRA! FB
John AC2RL on Elmer W3PHL DSB guy
AC3K reports inventor of Fender Stratocaster guitar was a ham: W6DOE
AF8E was doing POTA. I worked him. He said my rig had presence. FB
Alain F4IET FB DSB rig with mic in Cigar can!
Daryl N0DP worked him on SSB. He is homebrewing
Steve N8NM was in for repairs but is on the mend.
Rick G6AKG working with sub-harmonic mixers and logic chips
Paul HS0ZLQ Built DC receiver but looking for something else to build. No DSB!
Steve AB4I – Coherer, Jagadish Chandra Bose, and Marconi
Eldon KC5U Worked VK5QD right after me and mentioned SolderSmoke FB
Todd K7TFC is building the DC RX.
Tony G4WIF and Ian G3ROO using automotive relays for antenna switching. FB.
Dave WA1LBP Great to hear from my fellow Hambassador (Okinawa)
Older post comments:
Scott VO1DR was also in CF Rockey’s class! (Blog comment)
Aurora Aug 4, 1972: Twelve people shared memories. (Blog post)
Will WN1SLG just Googled his novice call and was led to my Novice QSOs! FB