Hi a bit of info for you. In the UK no repeaters are allowed to run in just talkthrough mode, ie, anyone can access and use them. On older rptrs a toneburst of 1750Hz was needed to open up the RX and as long as the rx was getting an incoming signal all was fine. When the rx ceased being used the rptr shut down and waited for the next 1750 access. All newer repeaters use ctcss on the rx,s and some use both ctcss and toneburst. It is obvious why rx access needs a tone just imagine what would happen if qrm opened up the squelch either the tx PA would go, unless you use time out, in the UK it is typicly 5mins, or users would just get loads of noise... As I have said before the situation is different in the UK in so much that you have to go through a long process to get permission to run a rptr and things like tx pwr out, ant,s, squelch sensitivity etc are all laid down for each rptr.
73 Steve ----- Original Message ----- From: "skipp025" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, March 14, 2006 4:36 PM Subject: [Repeater-Builder] Re: Project advice > Dick, > > There are other methods to restrict access... as in > burst/selective tone operation. It's popular in Europe > and other countries. > > The pain in the a$$ for many GMRS and Commercial radio > operators are the people putting up tone panels with a > lot of reserve codes set to beep-only (don't pass audio). > > One "AH" can hose up entire lists of ctcss/dcs codes for > use by other and never even try to use them > > skipp > > > All *REPEATERS* in UHF, both part 90 and part 95, are > > REQUIRED to have restricted access, and cannot be > > carrier squelch. PERIOD. > > Jim Barbour > > WD8CHL > > > > > >> Well, I looked at the GMRS rules and don't see a > > >> requirement for tone squelch... digital or CTCSS. > > >> I don't think tone squelch is require, but it sire is > > >> good common sense for a GMRS repeater. > > >> Dick > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.385 / Virus Database: 268.2.2/280 - Release Date: 13/03/06 > 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/
