LF: Re: HP3586A advice?

["SOMMEREYNS RUDDY" <ruddy.sommereyns@belgacom.net>]

Karl,

 

On the first question: This is correct. There are 2 separate oscillators, one for LSB and the other

for USB. They are not locked to the "master oscillator". The 2 xtals are located on the" A22" board. Then there is a divide by 100 IC and this signal goes to a product detector ( MC1496).

The IF is 15625 khz. That is what I recall from memory.

On the second question, I do not know but can look it up.

 

73,

 

Ruddy

ON6UX 

From: Karl-Arne.A.Markstrom@telia.se

To: rsgb_lf_group@blacksheep.org

Sent: Thursday, December 05, 2002 8:33 AM

Subject: LF: HP3586A advice?

Gentlemen,

 

A HP3586A selective level meter recently followed me home, but without any documentation.

I intend to use it as the basis for precision LF/MF/HF off-air frequency measurement applications,

and I wonder if the combined wisdom of this reflector could help with a few questions about this equipment:

 

1. In the selective level or SSB carrier measuring mode,the IF resulting from the incoming signal is translated to an audio baseband with the help

of a BFO giving a 1850 Hz beat tone. It appears to me that the BFO is not phase-locked to the reference oscillator.

Can anyone confirm this assumption?

 

2. There is a function labeled "counter" that supposedly enables the user to measure a signal frequency within the IF passband of the

HP3586A. Is this correct, and how is this function enabled in operation?

 

73/

 

Karl-Arne Markstrom

SM0AOM