I have something like that for my TS-520 which serves as a backup radio and 
a weekend radio to play with now and then and I have no problem using that 
radio.
----- Original Message ----- 
From: "Shaun Oliver" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, February 17, 2008 9:49 AM
Subject: Re: blind hams and valve radios.


> hmmm. I'll have to look for one of those. what's the going rate on a
> device like that?
>
>
> On 18/02/2008 12:48 AM, the old scribe known as Walt Sebastian was able
> to impart this pearl of wisdom:
>> Hi Shaun,
>> You can get an audio device called a comparator and have it put across 
>> the
>> meter.  The high tones will show the peaks and the low tones will show 
>> the
>> dips.  Most people can tune as fast or faster using a tone comparator.  I
>> think it took me about four seconds.  I had a Kenwood TS 520.  I hope 
>> this
>> helps.  73.
>>
>> Walt
>> WA4QXT
>> New London CT
>> [log in to unmask]
>>
>>
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>>
>