HP8443A Tracking Generator Counter

[Joe McElvenney]

Hi,

I would very much like to hear from anyone who has had any
experience in repairing the HP8443A as I'm looking for a few
pointers, source of spares, etc. I have one in good condition
except for a fault in the ALC/Video Amp (A8) - possibly either the
output or preamp hybrid. Together these items have 52dB of gain
giving +10dBm of output from 100kHz to 110MHz. If I could get
hold of just the spec or internal schematic/block diagram of these
items (5086-7099 [U2] and 5086-7010 [U1]), that would help me to
lash-up substitutes but the correct spares would be real nice as
so would a complete working A8.


TIA - Joe

 

[Pieter]

On Wed, 29 Mar 2006 11:56:40 +0100, Joe McElvenney
<ximac@btinternet.com> wrote:

Hi,

I would very much like to hear from anyone who has had any
experience in repairing the HP8443A as I'm looking for a few
pointers, source of spares, etc. I have one in good condition
except for a fault in the ALC/Video Amp (A8) - possibly either the
output or preamp hybrid. Together these items have 52dB of gain
giving +10dBm of output from 100kHz to 110MHz. If I could get
hold of just the spec or internal schematic/block diagram of these
items (5086-7099 [U2] and 5086-7010 [U1]), that would help me to
lash-up substitutes but the correct spares would be real nice as
so would a complete working A8.


TIA - Joe

Hi,

I have two of those HP8443A tracking generators for sale. In Europe,
Netherlands.

Pieter

 

[Pieter]

On Wed, 29 Mar 2006 22:53:09 +0200, Pieter <pieterNOSPAM@hotmail.com>
wrote:

On Wed, 29 Mar 2006 11:56:40 +0100, Joe McElvenney
ximac@btinternet.com> wrote:

Hi,

I would very much like to hear from anyone who has had any
experience in repairing the HP8443A as I'm looking for a few
pointers, source of spares, etc. I have one in good condition
except for a fault in the ALC/Video Amp (A8) - possibly either the
output or preamp hybrid. Together these items have 52dB of gain
giving +10dBm of output from 100kHz to 110MHz. If I could get
hold of just the spec or internal schematic/block diagram of these
items (5086-7099 [U2] and 5086-7010 [U1]), that would help me to
lash-up substitutes but the correct spares would be real nice as
so would a complete working A8.


TIA - Joe


Hi,

I have two of those HP8443A tracking generators for sale. In Europe,
Netherlands.

Pieter

Forgot to mention:

You can contact me by email at pieterNOSPAM@hoeben.com without the
NOSPAM of course

Pieter