How do you define when 'it fails'. That is the real question that has
existed for decades. I don't think anyone can answer that. I think it's
more of a theoretical 'what if' scenario as to what should happen - a
guide to use.
Joe M.
Dennis Zabawa wrote:
OK, here is where it really gets fuzzy
Threaded...
John Barrett wrote:
A repeater is NOT full duplex.. it is not simultaneously processing
completely separate audio streams in and out.. it is processing the
SAME audio in and out.
So because the content in both 'directions' (TX and RX) are the same,
that disqualifies it as 'full
Nate Duehr wrote:
Nate Duehr wrote:
On Nov 8, 2007, at 2:34 PM, Paul Plack wrote:
Manufacturers sometimes market features on new radios without regard
to Part 97. I have an Alinco DR570T, one of the first, if not THE
first, dual-band mobile to feature full duplex crossband
In fact, this is usually more helpful since it's the offending TX they
are looking for. IF you have multiple IDs, how do you know which TX is
causing the interference?
If each TX ID is unique to that TX, you know which one it is. This is
also an issue with multiple repeaters TXing the same
I've done the same thing (full duplex) on the SAME INPUT FREQUENCY!
(with no heterodyne, yet!)
I'll let the smart ones think about that for a minute...
...
...
Give up?
...
One user was TXing FM, and I was TXing SSB. Both audios were quite
readable on the repeater. Timing it out was an
Hello Eric
Good question and I think that my answer is probably not.
In my case, or I should say, in the case of our PD duplexers, I inherited both
of them (as new lead man) in used condition. My predecessors had successfully
used both of them in protected but somewhat damp locations for
Eric and all others in the woodwork---
Please disregard the 30 watt tuned under power comment at the bottom of my
message below--It is wrong and not relevant I meant to remove it and
missed it. The desense problems were found initially and the only tuning with
power applied was with
I have for sale a TX/RX mobile duplexer rated at 50 watts. This is the
Vari-Notch type, four cavities and factory tuned to TX 448.450 and
RX 443.450. The asking price is $80.00 plus $10.50 U.S. Postal Service
Priority Mail shipping. If interested pix of the duplexer can be seen
on the PHOTOS link
At 11/8/2007 18:12, you wrote:
OK, here is where it really gets fuzzy for me:
§97.213 Telecommand of an amateur station.
...
(b) Provisions are incorporated to limit transmission by the station
to a period of no more than 3 minutes in the event of malfunction in
the control link.
Does that
At 11/9/2007 07:01, you wrote:
Laryn,
My only reason for thinking 2.4 G would not be legal for control it did
not fall within the Auxiliary frequencies allowed for control or Telecommand.
The entire 2.4 GHz amateur band is available for auxiliary stations.
Bob NO6B
Remember that this is only required if you do not use automatic control.
This is why most repeater owners implement automatic control, and then use
telecommand as a backup.
Keith
On 11/9/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
At 11/8/2007 18:12, you wrote:
OK, here is where it
I'm surprised there is not more interest in VHF Engineering
Gear here on the Group... but their repeater receivers (modules)
were/are kind of crappy so you don't often find them still in
service.
I've got a snot full of VHF Engineering TX strips around and
a number of them still in service.
Re: Want:
CES RM10 aka RM-10 Circuit Diagram and/or the full Owners Manual
What we've got here... is failure to communicate. I hope at
least some of you might have noted the 40th Anniversary of the
Movie - Cool Hand Luke..?
Anyway... what we've got here is a dead RM10 Repeater Maker by
Bob,
I think you are kidding, hi.
73, ron, n9ee/r
From: [EMAIL PROTECTED]
Date: 2007/11/09 Fri AM 10:46:08 CST
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Part 97 question reference to Repeater control
At 11/8/2007 18:12, you wrote:
OK, here is
hi, I need pcb bord interface for my ifr 1200s.
if you have this in stock, let me know, or if you know hou repair
this module
thanks
jacques
Our group is looking for some good quality 220 repeaters. After
contacting the Tait dealer in Canada, I was advised that the 220
repeaters were not available in Canada. Does anyone know of a Tait
dealer in the US where I may make inquiries. Thanks in advance.
Roger
VA7RS
At 09:36 AM 11/09/07, you wrote:
Our group is looking for some good quality 220 repeaters. After
contacting the Tait dealer in Canada, I was advised that the 220
repeaters were not available in Canada. Does anyone know of a Tait
dealer in the US where I may make inquiries. Thanks in advance.
Take a look at DX Radio Systems. Here is a link to their web page and look
under RTF series for a better picture. I have one up and running here in
Northern California and it performs great. Slide in modules for the exciter (15
watts), receiver, power supply and PA (100 Watts). Very nice unit,
www.taitworld.com
Appears they have units covering 222 MHz.
73,
...Kim - WG8S,_._,___
This would amount to relinquishing control of the station to an unlicensed
individual. This is not like operating 3rd party where you allow another
person to communicate using your station. In 3rd party operation you must
still remain in control of the station.
Keith McQueen
801-224-9460
One of the repeaters I maintain has been working perfectly for almost a year
since its last checkup. It is a 6m repeater that has a link to several
other 6m repeaters, and is controlled by an ACC RC-96 controller. It is
powered from a very large commercial UPS that ensures no-break power.
One
Understood. For my question, I was thinking along the lines of using
the 2.4G radios as a WiFi user, not as an Amateur user.
I just wanted a clarification, because using 2.4G WiFi for a portion
of a control link is no different than using a 49 mc. cordless phone,
or a 1900 mc. cellphone to
...or, if you're calling wifi a ham-band link, how you're ID-ing that sucker!
- 73, Paul AE4KR
- Original Message -
From: Laryn Lohman
To: Repeater-Builder@yahoogroups.com
Sent: Friday, November 09, 2007 7:13 PM
Subject: Re: [Repeater-Builder] Part 97 question reference to
Eric,
Eproms are only good for so long.. One or more is starting to lose it's
stored/burned bits. I have not had this happen to an ACC controller but
other older eprom devices. The last item had a Eprom about ten years old
in it when it started to go crazy...
Hope this helps!
Bryon KØBSJ
I had a RC-850 with the original EEprom board, lost one of the chips
and every other word became 'zero' on an ID. Also power surges on the
internal power bus can cause random writes to the eeprom with the
results you are describing.
On 11/9/07, Bryon Jeffers KØBSJ [EMAIL PROTECTED] wrote:
Eric,
Bryon,
Thanks for the response. I hadn't thought about EEPROMS having a finite
lifetime- but it sounds reasonable. This RC-96 controller has been in
service for just over 16 years.
I should have mentioned that, once I disconnected the power to the RC-96 and
reconnected it about 20 seconds
RAM memory is not 100% especially as it ages. Stray gamma rays can corrupt
RAM. It's rare here deep in the atmosphere, but it does happen. Satellites
have to use hardened RAM for this reason (or as in the case of the HAM
microsats, special software routines that continually watch for and
I've never heard of Eproms having a finite lifetime, although I will readily
admit to not being completely knowledgeable of them. There may be
differences in quality, the cheaper ones are simply failing, or maybe the
Eprom wasn't burned properly.
An Eprom's principal enemy is static electricity.
I knew it, it's those space aliens!
Richard
http://www.n7tgb.net/ www.n7tgb.net
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Keith McQueen
Sent: Friday, November 09, 2007 7:55 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder]
An MSR-2000 shouldn't be difficult to narrow-band... Communications
Specialists sells a kit of narrow crystal filters to fit it. I've already
done one Mitrek and a Johnson PPL6060.
George, KA3HSW / WQGJ413
- Original Message -
From: [EMAIL PROTECTED]
To:
The way most HSMM stations do - you use your callsign as the SSID of the access
point, and have beaconing enabled!
- Original Message -
From: Paul Plack
To: Repeater-Builder@yahoogroups.com
Sent: Friday, November 09, 2007 9:15 PM
Subject: Re: [Repeater-Builder] Part 97
Bruce,
I suspect that there are a couple hundred desktop and laptop computers in
that office building, and any one of them can be radiating a carrier or a
harmonic thereof that falls on or near your input frequency.
A case in point: I was tuning up an GR1225 repeater a while back when I
noticed
At 10:25 PM 2007-11-09 -0800, you wrote:
A case in point: I was tuning up an GR1225 repeater a while back when I
noticed that the receive LED was blinking without any sound coming from
the speaker. When I disabled the PL decode, I heard a slightly
off-frequency carrier that was very weak, but
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