T.J. wrote:
> I acquired a Phelps Dodge 636 3/3 mobile duplexer tuned for TX freq.
> of 163.8xxx and a RX freq. of 167.5xxx. What I was wondering was if
> this could be tuned down into the ham band with any success for a
> mobile repeater using some hand held radios. I was looking in my
> Tessco catalog and saw that this unit resembles the RFS Celwave
> 636-6A-3/3 with specifications of: Freq. range 164-174 Mhz, max power
> 50 watts, min. separation 4.5 Mhz,
There's your answer right there-4.5 Mhz is bigger than the entire 2M ham
band. No, it's not practical to rebuild them to handle a narrower split.
If you want a portable/mobile repeater, you should look towards UHF. The
in/out spacing on 2M doesn't make it easy to do anything portable.
On UHF however, the whole thing, including duplexer and power supply,
can be put in a desktop-size box, about the size of a full size HF rig.
--
Jim Barbour
WD8CHL
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
