Hi there, I have a circuit made by a friend which is an oscillator 
controlled by a 1N34 diode, and with a length of wire, is definitely 
sensitive enough to work quite well on the low bands, (we use to call them 
that, e.g. 80, 40, 20, etc.) with a sensitivity control, so the tone would 
not get too high, and it works quite well still, after 35 years of use.

Curtis Delzer
W B 6 H E F
Fessenden, North Dakota; 58438-7300
----- Original Message ----- 
From: "John Miller" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, March 19, 2008 10:02 AM
Subject: Re: valve radios revisited


that's why I use it with the TS-520, the tone on the TW-1 seems a little
shaky at times and that Ni Viking unit, very steady tone, I am a lot more
confident in tuning with the Ni.
----- Original Message ----- 
From: "Richard Fiorello" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, March 19, 2008 10:53 AM
Subject: Re: valve radios revisited


> Hi John;
> I bought mine new from nye and it was over $100 but worth all of it.  The
> tone seems far more accurate than any other tone system I have seen.
> Richard
> --