Yes that will check out the cans.
I never had a SteppIR, don't plan on having one, but when they don't
break they do function. Back in the 50s and 60s my dad and I built a 20
meter beam with ground adjustable elements, because the theory took 12
inches change in reflector length to cross the band, but when we made
the center 20' of the elements out of 4" irrigation tubing with the
adjustable ends out of 2" tubing the bandwidth was more than that and
tuned at the middle of the band, it was flat all the way across. The fat
elements solved the bandwidth problem if there ever was one. That
required a rotating tower that lasted until about 2004. It would still
be up but a neighboring developer unhooked a guy wire.
Did you ever work with the Collins 821A-1? I worked on that for three
years at Collins, the diagnostic panel and the interconnect panel behind
it are my designs, but I was into other parts too and shipped all 9 of them.
73, Jerry, K0CQ
On 8/18/2010 12:58 PM, charles Lewis wrote:
> Jerry,
> Thanks for your input. I think I'll fire up my audio signal generator
> and do the old parallel variable resistor and a.c. voltmeter test to get
> an approximate reading of the impedance of these headphones. It could
> well be that they are considerably higher than 8 Ohms. In that case, a
> transformer certainly would help.
> I always had more than enough sound level when I used these same cheap
> headphones with my TS-440S and TS-930.
> By the way, I'm a fellow SteppIR user, but mine is just a little fellow
> - the two element version. I obtained it when Martti and Pertti did a
> small DXpediton in Sao Tome.
> 73,
> Charles - KY4P
> (ex VOA overseas TX engineer and later station manager)
>
>
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