Radio Society of Greater Bixby

Tom WA5MAZ (ex KJ5NMH) brought in some old Motorola stuff again, a tube type portable 2M rig from back before you were born. He made this 90V power supply to test the tiny jelly bean size tubes to find (surprisingly) they all worked. Listen on 146.91 Wed and Friday at 7 to hear the old rigs work (and be aware he has also synthesized both Crystals and PL tones to do so.)

Rich ZQG reviewed the BA club program from a few days ago, summarizing Emergency Power by suggesting a 100 Ah LifePo battery; five hundred dollar Harbor Freight generator (not the Inverter type because they make RF noise), and a $130 Hbr Frt solar panel.

Back in the 1950s the FCC license test had requirements like ‘Draw a 5 tube radio schematic.’ We reviewed a schematic of one using 50L6, 35Z5, and some with 12 Volt filaments, and decided, Yes, it’s possible for five tubes to work, and even cover the HF range as did the Hallicrafters S-38 (made in the 1950s).

We meet 2wice a month, 2nd and 4th Thursday, at Scott’s hamburgers downtown Bixby 7 to 8:15PM.