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Re: RE: 2m to 10m to 70cm converters
- Subject: Re: RE: [amsat-bb] 2m to 10m to 70cm converters
- From: "Robert Bruninga" <bruninga@xxxxxxxx>
- Date: Mon, 06 Jun 2005 09:13:43 -0400
>>> "John B. Stephensen" <kd6ozh@verizon.net>
>High-power varactors are very hard to obtain and
>1N4148's generate only tens of milliwatts.
Yes, that was why I suggested paralleling 36 of them
Using the 10 cent surface mount parts, 36 of them in
parallel in a 6x6 stack would be no bigger than a dice,
have low lead inductance and could handle probably
10 watts easily. If you get a watt at the output on
435 MHz, that would do with a beam..
But it only makes sense then to add a 10W brick
after the filters. That shouldnt be more than
say $50...
de WB4APR, Bob
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