Chuck Harris wrote:

I sure am glad you could clarify that. HQ-180A's don't have paper caps.

Are you sure about that? I know the vast majority of caps in there are
ceramic discs, but I recall some paper stuff as well in the detector stage.

The ceramics do fail sometimes too, but not very often. It's a major pain
to find them when they do, though.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

It has been a while since I was in one, but I am pretty sure.
There are some of those paper covered low voltage (3V?) electrolytics
in the audio section, IIRC.

-Chuck

Scott Dorsey wrote:
Chuck Harris wrote:
I sure am glad you could clarify that. HQ-180A's don't have paper caps.

Are you sure about that? I know the vast majority of caps in there are
ceramic discs, but I recall some paper stuff as well in the detector stage.

The ceramics do fail sometimes too, but not very often. It's a major pain
to find them when they do, though.
--scott

I just checked the parts list for my HQ-180 (non-A model). It lists
3ea. 0.1uF, 200VDC and 3ea. 0.47uF, 400VDC "Dur-Paper" capacitors and
a 0.033uF and 2ea. 0.01uF Mylar caps. All the rest of the small caps
are ceramic and mica. Of course, the filters are electrolytics. --Ed

Ed Engelken wrote:
I just checked the parts list for my HQ-180 (non-A model). It lists
3ea. 0.1uF, 200VDC and 3ea. 0.47uF, 400VDC "Dur-Paper" capacitors and
a 0.033uF and 2ea. 0.01uF Mylar caps. All the rest of the small caps
are ceramic and mica. Of course, the filters are electrolytics. --Ed

Hmm? Maybe that is the difference between a plain and an "A" model?

-Chuck

On Feb 5, 3:11�pm, Chuck Harris wrote:
Ed Engelken wrote:
I just checked the parts list for my HQ-180 (non-A model). �It lists
3ea. �0.1uF, 200VDC and 3ea. 0.47uF, 400VDC "Dur-Paper" capacitors and
a 0.033uF and 2ea. 0.01uF Mylar caps. �All the rest of the small caps
are ceramic and mica. �Of course, the filters are electrolytics. --Ed

Hmm? �Maybe that is the difference between a plain and an "A" model?

-Chuck

wow, i never expected to gt so many replies..i sent off for a bunch of
caps. that will be my first move. i figure after 40 yrs, the
electrolytics need changing anyway. also the few paper caps. i will
keep in touch after cap day. tnx agn, pete k2iqk

Hmm? Maybe that is the difference between a plain and an "A" model?

The Osterman boatanchor book says this:

"The newer A model features a solid state PS, 230VAC, 3 position BFO,
accessory socket, less drift and 500 ohm line output."

Phil Nelson