From: Herbert Schulz 
Subject: Re: [drakelist] R8B Low Sensitivity?????

capable of a low-distortion sine output, followed by a
home-
brewn, shielded, multistage resistive attenuator (in
the range
of 80...100[dB], depending on the generators capability
of
output level variation), should do the job as a
substitute
for a calibrated signal generator. Amplitude caibration
of the
generator at it's output terminals should not be a
problem
with any common and cheap "20[MHz] style"
analog oscilloscope
with a accuracy that is sufficient for ham
needs.
vy73 de Herbert, DG7MCC
 
Jim schrieb:
Jim <jbollit{at}ix.netcom.com> made an utterence
to the drakelist gang
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I am using a late serial number Drake R8B that the display shows it
will tune down
to 10kHz.  Also the serial number is high enough that Drake says
the radio will
tune and receive below 100kHz.
The issue is my R8B seems deaf below 100 kHz.  I connect a long
wire (100 feet)
to the Hi-Z input and cannot even hear a whisper of WWVB at
60kHz. 
I have also
tried a 40 meter dipole on the Lo-Z input and an active whip on the
Lo-Z input with
the same results.  I can put the radio in the LSB mode and there
is zero hint of
a carrier on 60kHz.
Do other Drake R8B owners have the same experience?
I sent a mail to Drake and they came back saying the radio sensitivity
is not spec'ed
below 100kHz.  That info is of little help.  The did say
I could send the radio
into them for $25 per hour to have it checked out, but if the radio
is poor (by
design) below 100 kHz, why waste the money.
Also, someone told me that they had a similar problem and it was a defective
I.C.
So...........are there other Drake R8B owners that have a radio that
can "hear"
below 100 kHz (WWVB for example)??
I am located in the San Diego, Ca area.
Thanks again.
Jim
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On Behalf of Herbert Schulz 
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