Paul, When you push for a wide-spaced portable repeater pair on 2m, suggest a separation of at least 3 MHz. The reason is that you can buy "compact base station" duplexers that are specified for 3.0 MHz spacing, but the performance rapidly deteriorates as the spacing is reduced below that point. I bought a Celwave 5085-1 duplexer that was factory tuned to a 2.655 MHz split, and it works okay with a 10 watt R1225 repeater, but it took some tweaking. The entire repeater fits into a rugged fiberglass case that is less than a cubic foot in volume. I hope to complete the final version shortly.
It will be a challenge to create a 3 MHz pair in only 4 MHz of spectrum, but it can be done. Let's not forget that the purpose is to support *temporary* communications of an emergency nature. While it would be nice to have a pair permanently set aside for this purpose, I'll bet that a true emergency will trump any other claim to existing frequencies. If the PL encode and decode tones are intelligently selected, any interference to established repeaters should be minimal to nonexistent. If the portable repeater is positioned in the area where radio comm is needed, low power works wonders! 73, Eric Lemmon WB6FLY -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Paul Yonge Sent: Monday, May 08, 2006 4:59 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Portable Repeaters Mike - What a batch of good ideas! All you folks have been very helpful and I've got a batch of homework to do. The Upper New York Repeater Council is having a meeting at the Rochester HamFest on June 3 from 1 pm to 2 pm (and maybe longer if they'll agree) and I'll organize these good ideas in writing so that maybe we can start to hammer out a workable itinerant repeater policy. Paul W2ARK <previous thread messages removed> 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/
