[R-390] MICRODIALS FOR R-390A/URR

Sun, 5 May 2002 23:23:51 -0700

They were used, as I understand it, not necessarily by NSA, for RTTY
reception and allowed precise settability. Others here on the list may know
more about them. They were a generic type of multi-turn knob and the full
range of their adjustment was not usable by the BFO.

Have one and don't use it for my purposes.

Bob

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of [email protected]
Sent: Sunday, May 05, 2002 1:58 PM
To: [email protected]
Subject: [R-390] MICRODIALS FOR R-390A/URR

Dear Friends,
             I'm searching informations and if is it possible photos about
MICRODIALS, a sord of knobs with an digital mechanical counter inside, that
I heard were applied instead of BFO knob on R-390A/URR emploied by NSA.
 I founded a box with five of this knobs.

 Any helps very appreciated. Federico BALDI

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