View Full Version : SWR meter
Paul Lee
May 30th 04, 06:56 PM
Is there a simple way to convert a Radio Shack SWR meter (27MHZ) to
aircraft radio range (120MHZ)? Anybody done that?
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Paul Lee, SQ2000 canard: www.abri.com/sq2000
Vaughn
May 30th 04, 07:48 PM
"Paul Lee" > wrote in message
om...
> Is there a simple way to convert a Radio Shack SWR meter (27MHZ) to
> aircraft radio range (120MHZ)? Anybody done that?
This question comes up about every 6 months.
The swr may or may not be reasonably accurate in the vhf frequency range,
the way to tell is to compare it against a known good meter with a transmitter
and a good dummy load and also with a typical antenna. If that CB meter has a
power range, ignore it; it will read high.
The best solution is to watch eBay and buy yourself an old Bird model 43
Wattmeter. You will also need to find a 25C slug which will do you for up to 25
Watt transmitters in that frequency range. You will have a fine piece of
equipment that will last you the rest of your life.
Vaughn
Ken Reynolds
May 31st 04, 09:23 AM
Paul
In a Ham Radio shop , possibly Radio Shack, you can get a swr meter for the
144meg vhf band which is quite useable on the aircraft band.
Ken Reynolds
Scott
May 31st 04, 02:47 PM
And possibly an even better deal than a Bird model 43 is a Telewave
Wattmeter. Telewaves do not have frequency selective slugs. They work
from 2 MHz up to 500 MHz or more. All you need to do it hook it up
inline, turn a switch to read forward and reflected power and select the
power range. The nice thing with the telewave is they have a 5 Watt
range which is great for reading power from a handheld radio.
Scott
Vaughn wrote:
> "Paul Lee" > wrote in message
> om...
>
>>Is there a simple way to convert a Radio Shack SWR meter (27MHZ) to
>>aircraft radio range (120MHZ)? Anybody done that?
>
>
> This question comes up about every 6 months.
>
> The swr may or may not be reasonably accurate in the vhf frequency range,
> the way to tell is to compare it against a known good meter with a transmitter
> and a good dummy load and also with a typical antenna. If that CB meter has a
> power range, ignore it; it will read high.
>
> The best solution is to watch eBay and buy yourself an old Bird model 43
> Wattmeter. You will also need to find a 25C slug which will do you for up to 25
> Watt transmitters in that frequency range. You will have a fine piece of
> equipment that will last you the rest of your life.
>
> Vaughn
>
>
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