> "Jim B." <[EMAIL PROTECTED]> wrote:
> I HIGHLY do NOT recommend using duplexers
> for a portable 2M repeater. They are very
> large, and VERY delicate. Banging around
> in a commvan, or a trailer, or any other
> frequent transport, will result in detuning,
> and likely damage.
Not in all cases. I have bpbr VHF duplexers
here, which can be used for mobile operation.
Although semi large compared to a mobile flat
pack type, they have internal supports for
vibration issues and they hold up well when
mounted in a vertical plain.
I've had to mfgr more than one antenna combiner
system for the trunk/rear of a public service
vehicle. I use anti shock mounting schemes
similar to those found in skb rack enclosures.
Not something you want to do every day, but
some BpBr VHF Duplexers will go mobile if
one uses the proper (brand of) equipment.
> UHF is a MUCH better plan for a portable
> repeater, since a mobile duplexer will work,
> and the whole thing can be made into a desktop
> unit, with the duplexer internal.
> Jim Barbour
> WD8CHL
VHF high band is probably not a problem, VHF
Low Band in a Band-pass layout is another
story.
Cheers,
skipp
www.radiowrench.com
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/
