Bill Powell wrote:
>
> --- In [email protected], "Jim B." <[EMAIL PROTECTED]> wrote:
>
>>>--- In [email protected], "Bill Powell" <[EMAIL PROTECTED]>
>>>wrote:
>>>"I'm in the early feasibility stage of moving an OEM repeater from
>>>single-site to multiple receivers and a central
>>>control/transmitter..."
>>>__
>>
>>A question I have is: This sounds like a commercial system, not ham?
>
> Must use supportable commercial equipment in order to share space but
> will definitely be in ham bands. RECES and, indirectly ARES falls
> under OEM.
>
OEM? Office of Emergency Mangement??? I wish everyone would use the same
terminolgy...I hear OEM and think original equipment manufacturer...;cP
In the ham bands, you're OK with CSQ of course (duh). There are some
areas (Ohio is one) where a 2M rptr especially is highly encouraged to
have the capability of going into other then CSQ when conditions
require. If you don't have it, don't complain about out of town users.
>
>>If so, in the US, I don't think you can have carrier access on a
>>repeater. I *KNOW* it's illegal on UHF, and probably on VHF as well.
>
> Really? CFR 47 part and paragraph please cause I must have missed
> that one.
I'm talking about part 90 and part 95 systems.
> The reasoning behind a selectable PL defeat (ignore) is to insure that
> ANY unit can gain access, even if it is borderline MDS, in an
> emergency situation.
>
MDS? Heh-that's a form used by nursing homes ;c} (Still talking about
part 90 and 95, not 97) No one outside of the assigned system is
normally supposed to be accessing the repeater. Even in mutual aid
situations, incoming units have to be setup with the proper signalling
just as any other user.
I don't know of any PS repeater in all of NE ohio that is, or has the
capability to be, carrier access, without a tech going to the site and
physically flipping a switch or something. The dispatcher can't do it.
Even the old Cleveland FD rptr on 33.9 was tone back in the 60's.
>
>>It must be have some other access means, tone, DCS, even MDC/GESTAR
>>-type stuff.
>>I even have my doubts about carrier access on fed repeaters.
>
> I will agree that COS is just plain dumb on business channels. OTOH,
> many of the local fire systems, even on low band, run carrier squelch
> and many od the police tactical channels are also COS.
>
> Thanks,
> Bill
This is REPEATERS ONLY. The transmitter of the repeater cannot be
brought up with only an input carrier and no other means of signalling.
And again, I only know for certain that this applies to UHF and above.
It may not apply to VHF or low band systems.
--
Jim Barbour
WD8CHL
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