I am looking for crystals for a TR-4 C ..Mainly 21.5 for 40M and 42.5
for 10 M ..Be willing to buy them, or trade for other crystals that I
might have.. TNX W4PQW

wrote in message
...
I am looking for crystals for a TR-4 C ..Mainly 21.5 for 40M and 42.5
for 10 M ..Be willing to buy them, or trade for other crystals that I
might have.. TNX W4PQW

If you can't find them, International Crystal in Oklahoma can probably
make them. They have the specs for most ham crystals.

Pete k1zjh

"Tio Pedro" wrote in message
...

wrote in message
...
I am looking for crystals for a TR-4 C ..Mainly 21.5 for
40M and 42.5
for 10 M ..Be willing to buy them, or trade for other
crystals that I
might have.. TNX W4PQW

If you can't find them, International Crystal in Oklahoma
can probably
make them. They have the specs for most ham crystals.

Pete k1zjh
The site indicates they make replacement crystals for
Drake and Collins as well as several other brands. I wonder
if you have any idea of how expensive these are in small
quantity. I suppose I should contact them but don't have an
immediate application. If the crystals are not too expensive
it is a valuable resource.


--
---
Richard Knoppow
Los Angeles, CA, USA

Richard Knoppow wrote:

Pete k1zjh
The site indicates they make replacement crystals for
Drake and Collins as well as several other brands. I wonder
if you have any idea of how expensive these are in small
quantity. I suppose I should contact them but don't have an
immediate application. If the crystals are not too expensive
it is a valuable resource.

ICM crystals for most gear are between $10 and $25 depending on the
holders. More money if you want higher precision, wider pulls, etc.

MUCH nicer than buying hamfest crystals and grinding them to frequency
with Ajax cleanser.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

"Scott Dorsey" wrote in message
...
Richard Knoppow wrote:

Pete k1zjh
The site indicates they make replacement crystals
for
Drake and Collins as well as several other brands. I
wonder
if you have any idea of how expensive these are in small
quantity. I suppose I should contact them but don't have
an
immediate application. If the crystals are not too
expensive
it is a valuable resource.

ICM crystals for most gear are between $10 and $25
depending on the
holders. More money if you want higher precision, wider
pulls, etc.

MUCH nicer than buying hamfest crystals and grinding them
to frequency
with Ajax cleanser.
--scott

I vaguely remember using valve grinding compound for
that. The sort of crystals used in Drake or Collins
receivers are the sort with plated silver electrodes (I am
sure you know this) and can't really be reground. It worked
fine on the ancient clamp mounted types. I am trying to
remember what we used to etch the surface of inactive
crystals. Something nasty I think.


--
---
Richard Knoppow
Los Angeles, CA, USA