[GreenKeys] SELCAL - auto start proposed

[Bob Camp]

Hi

Shucks .... I still think a repeater would be more fun than a bbs.

The section you quote is true for a voice repeater. However for some=20
obscure reason a RTTY repeater is a "message forwarding system" ie:

=A797.219 Message forwarding system.

  (a) Any amateur station may participate in a message forwarding=20
system, subject to the privileges of the class of operator license=20
held.

  (b) For stations participating in a message forwarding system, the=20
control operator of the station originating a message is primarily=20
accountable for any violation of the rules in this Part contained in=20
the message.

  (c) Except as noted in paragraph (d) of this section, for stations=20
participating in a message forwarding system, the control operators of=20=

forwarding stations that retransmit inadvertently communications that=20
violate the rules in this Part are not accountable for the violative=20
communications. They are, however, responsible for discontinuing such=20
communications once they become aware of their presence.

  (d) For stations participating in a message forwarding system, the=20
control operator of the first forwarding station must:

  (1) Authenticate the identity of the station from which it accepts=20
communication on behalf of the system; or

  (2) Accept accountability for any violation of the rules in this Part=20=

contained in messages it retransmits to the system.


  =A797.221 Automatically controlled digital station.

  (a) This rule section does not apply to an auxiliary station, a beacon=20=

station, a repeater station, an earth station, a space station, or a=20
space telecommand station.

  (b) A station may be automatically controlled while transmitting a=20
RTTY or data emission on the 6 m or shorter wavelength bands, and on=20
the 28.120-28.189 MHz, 24.925-24.930 MHz, 21.090-21.100 MHz,=20
18.105-18.110 MHz, 14.0950-14.0995 MHz, 14.1005-14.112 MHz,=20
10.140-10.150 MHz, 7.100-7.105 MHz, or 3.620-3.635 MHz segments.

  (c) A station may be automatically controlled while transmitting a=20
RTTY or data emission on any other frequency authorized for such=20
emission types provided that:

  (1) The station is responding to interrogation by a station under=20
local or remote control; and

  (2) No transmission from the automatically controlled station occupies=20=

a bandwidth of more than 500 Hz.


So as long as we stick with 170 shift (it's less than 500 hertz) and=20
stay in the normal RTTY sub bands we can do it *and* be legal. Since=20
it's like a packet system you don't even need a control operator ....=20
go figure. As I see it (which doesn't make it true) as long as we store=20=

the message (at least one character in storage) we're legal. Of course=20=

this all may be wishful thinking on my part.

	Take Care!

	Bob Camp
	KB8TQ



On Apr 19, 2004, at 4:09 PM, Jim.Walls@sce.com wrote:

>
>
>
>
> Bob  camp said (in part):
>> Cross band / multi band HF RTTY *repeater*
>
>> In and out on the same HF band is a little tough but not out of
>> the question. Ten meter FM repeaters run ok at about a 100KHz
>> split. That suggests we could get down around a 10KHz split on 80
>> meters.
>
> Most 10M repeaters run split site.
>
>> I'd still vote for a repeater. I always had fun on RTTY repeaters.
>
> The biggest issue is legality.  An HF repeater is not legal in the US:
> Sec.  97.205  Repeater station.
>
>     (b) A repeater may receive and retransmit only on the 10 m and
> shorter wavelength frequency bands except the 28.0-29.5 MHz, 50.0-51.0
> MHz, 144.0-144.5 MHz, 145.5-146.0 MHz, 222.00-222.15 MHz, 431.0-433.0
> Mhz, and 435.0-438.0 Mhz segments.
>
> 73
> -----------------------
> Jim Walls - K6CCC
> k6ccc@amsat.org
> Mobile Radio Operations
> Southern California Edison Co.
> Ofc:   626-302-8515   -   PAX   28-515
> FAX:   626-302-7501   -   PAX   27-501
>
>


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