[aprssig] 144.39 quartz crystal? (was 145.39 crystal)
KY1K at verizon.net
Tue Oct 17 09:47:48 CDT 2006
At 01:07 PM 10/16/2006, you wrote:
>I suspect you really want 144.39, but whatever. I've been very
>happy buying my crystals from
>Name: West Crystal Company
>Address: 10-2550 Acland Rd
> Kelowna, BC V1X 7L4 CANADA
>Phone: (250) 765-4833
>E-mail: wcrystal at shaw.ca
>They know what holders and formulas fit what radios, and provide
>better prices and service than the two big names.
OK, thanks Chris,
I was hoping for a widely available 48.13 Mhz crystal, making it
possible to build a low power FM only (stand alone, and inexpensive
non-frequency agile) transmitter for trackers and weather stations.
A 48.13 crystal makes it possible to have a single stage produce low
power on 144.39, but 48.13 is not a standard value. So, these
crystals are not cheap::>
A group buy enabling purchase of 100 units or so would make the
crystal much more reasonably priced-which is why I asked on the list.
But, there doesn't seem to be much interest within the group, even
though trackers and weather stations are becoming more popular.
I agree many would prefer a transceiver, I was interested in the
transmit only aspect.
And, yes...I did mean 144.39, the frequency in my original post was an error.
> > Anybody else wish they had a cheap single frequency stand alone QRP
> > transmitter for APRS trackers and weather stations?
>Needs to be a transceiver, not just a transmitter, to be channel-friendly -
>but yes. I've been re-tuning Motorola MT500s, which can be had cheaply
>on ebay, but the required crystal elements are harder and harder to find
>(we've resorted to rebuilding them).
>73 de chris K6DBG
>aprssig mailing list
>aprssig at lists.tapr.org
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