Back in the early 1970s, a local repeater used a
slow-turning wheel and a roller microswitch to key a
PL encoder for their CW ID. It was barely audible in
most radios, but it got the job done. Of course, this
was back in the days when repeaters didn't have or
need coded squelch encode or decode,
The stock MSF brain was designed for commercial use and runs the IDer
every 15 minutes. If that parameter was changeable the unit would be legal
under the amateur rules only as long as you had a way to remotely shut it
off (maybe a digital output from the controller on another repeater at the
same
I seem to recall that the suitcase programmer allowed me to set id time
at 10min.
Content is also adjustable..How else would you put your callsign in?
Mike Morris WA6ILQ wrote:
The stock MSF brain was designed for commercial use and runs the IDer
every 15 minutes. If that parameter was
Has anyone on the list adapted a modern controller for
frequency-shift keying?
I've taken a CWID'er and, combined with an LM386 audio amp, did collector
modulated CW for link ID'ing by AC-coupling the CW audio into the power
control circuitry. In broadcast we do FSK ID'ing, as well as MCW/AM,
Paul,
Most modern controllers put out tone CW for F2, FM modulated CW
(technologically not legal ID), for IDing the repeater. This same output is
most often used for the other tones such as tail beeps, response tones, etc.
If it were used only for ID then could build a tone decoder or just
ARRLWeb Survey Results
Poll date: November 16, 2007
Do you have any active D-STAR systems in your area?
Yes, several 21.9 % (611)
Yes, one 11.9 % (331)
No, but one is going on the air soon 3.4 % (96)
No, but we're in the planning stages 3.5 % (98)
No 43.0 % (1200)
I've never heard
Ron, as far as I can tell from Part 97, ID may be done with any legal emission
mode for the frequency, and tone-modulated CW and FSK are both legal, so long
as bandwidth limits are observed. FSK must use 1kHz shift.
Unlike a beacon station, the controller is expected to do much more than just
Paul,
If you read part 97.119 CW can be used for IDing, not MCW as most all repeaters
use. However, we've done this for years and there is something in law that if
something has been a standard practice for length of time, think 30+ years long
enough, then legal, hi. It's been discussed on
As with many Mot rig software and programming software some have hacked it to
change thing like making rigs go into the Ham bands when Mot would not (must
state this is often because the rigs were not type accepted for these out of
band ops and I personally do not like using equipment not
If you read part 97.119 CW can be used for IDing, not MCW as
most all repeaters use.
97.119(b)(2) says you can use a phone emission (i.e. voice), in English, to
identify.
97.3(c)(5) is the definition for phone, which explicitly specifies MCW for
the purposes of performing station
The analog MSF5000s used MC6803 microprocessors in
just about everything: the station itself, the tone
remote control card, the MCS unit, etc.
Yes, you probably can wade through 8kbytes of program
space plus 4kbytes of code plug space and find the
data that controls the CW ID speed etc. More
Dipole phasing is not easy even for the Decibel 420 type antennas.
It is common for very sharp nearfield nulls and cancel areas
expecially near and underneath a mountain top mounted antenna.
I label the effect something similar to what I call unwanted
nearfield/local re-entrant energy.
Less
Any comments on the difference between expected antenna patterns and
coverage on a DB222 vs. Celwave/RFS PD220?
I'm using a PD220 and find the local coverage to be somewhat spotty,
but coverage 20 miles away to be excellent.
Is this typical of the PD220? Would a DB222 fill local areas any
David,
I had a similar problem with a 2 meter repeater at a high power FM
site. When the FM broadcast transmitter was down the front end
overload of my receiver (GE mastrII) went away. In my case it turned
out to be RF from the FM transmitter floating on the AC power lines
and making its way
I'm a Trucker and in my travels it seems that the link systems are
about the only place anything is going on
I can't tell you how many areas I've been where you open the repeater
book, find a bunch of local machines and can't hear or raise a peep
out of anyone . On the other hand linked
The PD220 has 5.25dB gain and 18 degrees vertical beamwidth.
The DB222 has 3dB gain in the omni configuration, and 36 degrees vertical
beamwidth.
Vertical beamwidth is measured at the 3dB points on main lobe of the
horizontal axis plot, so divide the published number in half and you can
easily
Steve, the reason you don't get anyone on the other repeaters is due to you not
being known to them. Most repeater users will only talk to ones they know and a
different call comes on the repeater they all of a sudden get mic fright and
don't answer :)
David
=
From:
-Original Message-
From: Paul Plack [EMAIL PROTECTED]
Sent: Nov 27, 2007 7:55 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] FSK for Link IDs
Ron, as far as I can tell from Part 97, ID may be done with any legal emission
mode for the frequency, and
Bob,
Yes most cannot do this or at least do not have the tools, but some do.
A 6803 debugger would convert the op code to at least mnemonics and source code
although labels and variables would not be identified. It would take some work
to see what is going on, but is doable.
A typical
At 05:02 AM 11/27/07, you wrote:
I seem to recall that the suitcase programmer allowed me to set id time
at 10min.
Not according to the info available to me.
Content is also adjustable..How else would you put your callsign in?
I was referring to dynamic content - like adding (word space)BATT
to
I've got it in there but I can't tell if it's doing
anything. Hopefully we will have the service monitor back
tomorrow and I and see if I can get that to tell me more.
Vern
On Tue, 27 Nov 2007 11:29:06 -0500
Scott Zimmerman [EMAIL PROTECTED] wrote:
Vern,
It's just as easy as it looks.
Folks,
Looking for cable harness and tuning data for the
Decibel Products DB-4050-wdc-b 8 cavity VHF duplexer.
This is a 300khz spaced duplexer that is currently on
155mhz, and we need to move it down to 146mhz.
Jim at DB Spectra is researching for me as well, but this is a pretty
old unit, we
I will remind everyone that this list is not for debating FCC rules.
(1) By a CW emission. When keyed by an automatic device used only for
identification, the speed must not exceed 20 words per minute;
With that in mind, I'll make this comment and I expect it not to
generate a reply from
George,
You are correct. From another posting F2 or audio CW or MCW is considered
phone and phone can be used for IDing.
73, ron, n9ee/r
From: George Henry [EMAIL PROTECTED]
Date: 2007/11/27 Tue PM 01:37:12 CST
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] FSK for Link
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