A number of days late (wasn't a subsciber when I first tried to post) but for what it's worth. The 1997 Bird Catalog lists the Series 71, 72 and 74 Coaxial Switches, of various numbers of positions a
I have an Alpha 99 in good condition I would like to sell. This has the optional external fan and has been used primarily in a non-smoking, several contests per year mode. I can ship it in the separa
I am inquiring on behalf of another ham who is thinking of purchasing one of these two amps. There is no question that there are differences between these two that go towards justifying the near 2 to
My recollection is that you don't re-tweak the plate. The "slightly over-coupling the loading capacitor" was meant to nudge the amp into a slightly more linear portion of the curve than you get by th
I need to repair a roller inductor, roller on the Henry 3K-Classic. Due to prolonged single band operation it got gummed up (virtually stuck) on the slide rail. When tuned further it went off-track,
Copied from AMPS. This is an obvious case of brain flatulence. I have ordered 4 different part numbers from Mouser for the *pins* only that fit the power connectors on Icom and other rigs. The standa
Tack, A few months ago I was about to order a replacement transformer for a 91b but got distracted. I checked with Hammond Mfg, who purchased the designs and rights to the Peter Dahl line. They gave