I built one up and while it worked OK with an external preamp, the crystal drift over temp was always a problem even with a wide temp range crystal and to keep the heat in check, I reduced the power to 10 watts. It worked about 95% with the problem above on dead cold and over 105 temp days.
Mel K6KBE
k3phl <[EMAIL PROTECTED]> wrote:
k3phl <[EMAIL PROTECTED]> wrote:
I opted to split a Midland 13-513. The PA runs 20-30 watts, is
synthesized, and has a much better receiver than the drifty and
rather deaf 509. The operating manual also has a full schematic as
well as the point to point wiring between the individual boards. It
even includes receiver and transmitter alignment instructions.
Although I did not document the procedure to split, it works very
well as a primary or backup repeater.
For those not familiar with the radio, there is currently one on Ebay
if you search for keyword "Midland 220"
Regards,
Steve
K3PHL
http://mywebpages.comcast.net/k3phl
--- In [email protected], "w8qpo" <[EMAIL PROTECTED]>wrote:
> hello,
> anybody have details of converting midland 13-509 220mhz radio to
> repeater? I would like to split rec and tx.
> thanks brad w8qpo
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