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Re: [VHFcontesting] FN55 - Transverter drive control?

To: "vhfcontesting@contesting.com" <VHFcontesting@contesting.com>
Subject: Re: [VHFcontesting] FN55 - Transverter drive control?
From: Keith Morehouse <w9rm@calmesapartners.com>
Date: Sun, 5 Feb 2017 09:03:20 -0700
List-post: <vhfcontesting@contesting.com">mailto:vhfcontesting@contesting.com>
If you can use the radios power control to reduce output to the 20-25W
range, I've found this to be a simple, cheap and effective solution.  I use
one of these on a IC-706.  I dial down the power and use a external ALC
circuit to control the "overshoot" common to this line of radios.

http://transverters-store.com/attboard.htm

Jay W9RM
DM58 CO

Keith J Morehouse
Managing Partner
Calmesa Partners G.P.
Olathe, CO

On Sun, Feb 5, 2017 at 8:43 AM, Steve Kavanagh via VHFcontesting <
vhfcontesting@contesting.com> wrote:

> Paul
>
> Just one more approach....if you can source ordinary resistors at a good
> price you can build your own power attenuators for 28 MHz quite easily. It
> looks like 100 1 watt resistors would be around $30 from Digi-key, maybe
> 1/10 of that from Chinese vendors on Ebay.  Each resistor is probably
> somewhat inductive at 28 MHz, but with enough in parallel the inductance is
> divided by the number of resistors and becomes pretty much negligible.
> Here's a 100 W (or so) dummy load using that approach - the SWR is great on
> 10m, but not so good on 6m:
>
> http://www.qsl.net/ve3sma/HFDummyLoad.pdf .
>
> Occasionally I think about converting it into an attenuator, but haven't
> gotten around to it yet.
>
> 73,
> Steve VE3SMA
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