[App_rpt-users] GPS Locked MACTRAC

[Randy Neals]

I'm also interested in locking a transmitter frequency to stable reference.
The ICOM FR-6000 repeater which I use has a TI LMX2352 PLL which relies on
a 15.3 MHz Crystal Resonator, CR-826 type.

It appears that I might be able to replace the crystal with a reflock board
(Link below), with the reflock generating the 15.3 MHz.
http://www.qsl.net/ct1dmk/reflock.html

Here is an example of a ham reflock'ing a yaesu 817 all-mode radio to a 10
MHz reference input
http://www.vk3hz.net/riglock/FT817_External_Reference.pdf

The 10 MHz reference signal can be from a Rubidium Oscillator or from GPS
Disciplined Oscillator, both of which are available from eBay.
The Trimble Thunderbolt is a common GPSDO. Some good general info is on
John's web site: http://www.ke5fx.com/tbolt.htm

73,
Randy - VE3RWN / W3RWN

On Wed, Jan 2, 2013 at 12:22 PM, Ron Simpson <n6gkj.cm98 at yahoo.com> wrote:

> Hey guys, Happy New Year!
>
> Looking for ideas to cleanly phase lock a MAXTRAC. I have the boards, I
> have an idea on how I want to do it. Just would like input from those who
> already have done it. I looked online for some info but found nothing.
>
> I can break the ref osc tune line and take that signal out. I can pick off
> the 14.4 mhz and bring that out, but I want to do it cleanly, not a hatchet
> job.
>
> Anyone have pics?
>
> 73,
> Ron, N6GKJ
>
> Sent from Yahoo! Mail on Android
>
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