The R-4C's 3rd Mixer LO crystal for SSB/CW is 5644.999 kHz. Why didn't
Drake just specify 5645.0 kHz? The tolerance of the crystal is well beyond
1 Hz and is likely +/- several hundred Hz. Perhaps a large quantity price
break for crystals ground below 5645 kHz?
Any Ideas?
Paul, W9AC
----- Original Message -----
From: "Paul Christensen" <[email protected]>
To: "Drakelist group" <[email protected]>
Sent: Tuesday, May 31, 2011 10:43 AM
Subject: [Drakelist] R-4C Crystals (3rd Mixer LO)
In the process of drilling holes in the chassis of an R-4C to install a
GUF-1 1st I.F. filter, I managed to let the drill chuck come in contact
with the 3rd Mixer LO crystals. I have confirmed that both crystals have
shattered as a result of the extreme vibration. Soooo...anyone have a
crystal pair from a parts unit? Specifically, they are:
5595.000 kHz
5644.999 kHz.
These are the two crystals mounted on the mode select switch PC board
(under the mode switch cover). Many Tnx!
Paul, W9AC
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