Measuring SWR

Many years ago, I connected a normal SWR meter in the antenna line and connected my audible volt meter device across the visual meter movement.  I then could read the voltages across the meter in the forward and reverse switch positions and calculate the SWR.  Can't remember any more what was the formula but it seemed to be the best way to do it back then.  That was the early 70's.

The Other Howard, WA9RYF
----- Original Message ----- 
From: "Kent Plemmons" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 09, 2013 5:12 PM
Subject: Re: LDG SWR-003 Audible Power meter


> Hi Albert and list,
> 
> According to LDG the TW-2 was for 2 meters, 70 cm and higher.
> 
> Just last night I ran across a reference and link to lgw and the tw1 and 2.
> I had been looking for a talking swr for a long time and was shocked to find
> this.  After following links for some time I found a site by W4RT
> Electronics
> A Division of Optical E.T.C., Inc.
> Who, it appeared, had purchased the discontinued stock of tw ones and twos
> from ldg.  I even got so far as to order one on line and got a response this
> morning that they no longer had any remaining stock of tw meters.  What a
> disappointment!
> 
> If anyone knows where one might be available or something similar I'd
> appreciate knowing.  What do you all use to measure swr aside from asking
> someone sighted to help?
> 
> 
> Thanks,
> 
> Kent Plemmons
> Somewhere near Waynesville NC
> Kj plemmons at gmail.com
> Skipe: kent.plemmons
> 
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of Albert Sanchez
> Sent: Friday, August 09, 2013 9:29 AM
> To: [log in to unmask]
> Subject: LDG SWR-003 Audible Power meter
> 
> Greetings All,
> Somewhere in the early 1990's I bought an LDG SWR-003 audible SWR / power
> output device. It operates in the 160 to 10 meter range (I haven't tried it
> on 6 meters yet). I recently ran across the cassette instructions (there
> were no print instructions), for this device and have digitized it in to an
> MP3 file. If anyone is interested in this recording I'll be happy to forward
> it.
> Best 73's,
> Albert, WA7FXB