|[AMRadio] new antenna and matchbox a bust.|
brett.gazdzinski at verizonbusiness.com
Tue Jan 30 23:09:14 EST 2007
I don't see a 1N275 listed in the book....
Anyone know where I could get a schematic for a
it works, but the pep part does not work.
> -----Original Message-----
> From: amradio-bounces at mailman.qth.net
> [mailto:amradio-bounces at mailman.qth.net] On Behalf Of Jim Wilhite
> Sent: Tuesday, January 30, 2007 2:49 PM
> To: rbethman at comcast.net; Discussion of AM Radio in the
> Amateur Service
> Subject: Re: [AMRadio] new antenna and matchbox a bust.
> 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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