David Dawson ) writes:
Chuck Harris wrote:

David Dawson wrote:
Hi
Does anyone have crystals for the Drake TR-33C 2 meter tranceiver?
I have the following available for trade:
146.640
146.610
146.820
146.880
147.000

I want the following (some/any)
145.350
146.430
146.680
147.300

The crystal's marked frequency is the exact channel frequency.
The radio derives the output by some method which I don't know, but I can
get +/- 600 kHz and no offset as well

Thanks

It really is quite easy and inexpensive to get your crystals custom
made by a number of different companies. Most all have web access and
ordering. I have used JAN and had excellent results. The companies have
information on file for virtually every piece of equipment that uses
crystals... They certainly have your TR33C on file.

The usually scheme for making the radio work with a single crystal is to
make the crystal be cut for the receive frequency, and mix it with three
different crystals for transmit (LO+IF, LO+IF-600KHz, LO+IF+600KHz). The
IF is most likely 10.7MHz.

-Chuck
Thanks.
There are a few problems for me with getting custom crystals.
I'd have to get them across the border up here in Canada if I get them from
Jan, pay tax, more tax, brokerage and handling fees which would make it not
worth the price I'd end up paying on my rather limited budget.

Nobody's making crystals in Canada anymore? There used to be, I have
no idea who if any still do, but it might be worth checking.

Snelgrove in Ontario used to, they even made crystal filters.

Michael VE2BVW

It would be cheaper for me to buy another radio than buy a set of crystals.

And yes, I kind of figured that there would be heterodyning involved.

When it comes down to it, I have a nice synthesized rig but I'd like to set
the Drake up for operation on some more useful frequencies in Vancouver BC,
where I live.

Oh well, maybe I'll come across some crystals somewhere.
--
...Dave Dawson VE7HP /VE7HDC

"If you wrestle in the mud with a pig,
you both get dirty, and the pig likes it."