[AMRadio] new antenna and matchbox a bust.

Jim Wilhite w5jo at brightok.net
Tue Jan 30 14:49:05 EST 2007

I believe, provided my memory is correct, Drake used 1N275s 
in their wattmeters.


> Brett,
> Hunt around in the "junk" boxes for 1N60s.
> They have ALSO been used for the VSWR bridges.  I've run 
> them on mt "Tall Ships" with NO loss of life.
> They can even be found in 'old' "Chicken Band" VSWR/Sig 
> Strength meters by Vanco and the like.
> Bob - N0DGN
> Brett gazdzinski wrote:
>> Ok, I have some diodes marked fast switching,
>> rated at 200 volts and 200ma I think.
>> The 1N34a's are rated at something like 60 volts
>> and 40ma.
>> I wonder if the fast switchers would work.
>> Its such a pain in the butt to get at the diodes
>> in the tuner, and I don't think you can adjust
>> the pots with the tuner working as its built
>> into the antenna switch part.
>> This is going to be a huge pain in the butt to calibrate.
>> Leave it to heathkit to find something that's really
>> screwed up in the design.
>> I think it might be a good idea to save up for 2 nice 
>> tuners, one for 80 and one for 40, and just
>> switch between them.
>> Brett
>> N2DTS

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