I scanned the IFR1500 Application Notes a couple of months ago and
posted it to:
http://groups.yahoo.com/group/Repeater-Builder/files/IFR1500/
You may find this helpful. I'm interested in information about the
digital attenuator and LCD display that you have Was that and IFR
product or
Looking for opinions.
Our club has a couple of 2m repeaters; we chose to run them with PL and we
picked 107.2 because that tone freq. was not in use in the area. Recently two
other clubs who also have 2m repeaters have decided to utilze the same PL tone
freq.
Does having numerous
Technically, yes, but in SWPA nearly all ham repeaters use the same tone
and I've never heard of it being a problem.
Besides, if all the hams run the same tone, and the commercial users
avoid that tone, it makes intra-service intermod problems much less
likely, and I would much rather have
I can tell you that the same tones on different frequencies inside the same
site can cause a problem. My 2-meter repeater was on 151.4, the same tone as
the local high band fire and channel on the VHF community repeater. When a
combination of the units with 151.4 came up, I had inter-mod on my
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
buil...@yahoogroups.com] On Behalf Of surf_boy82
Sent: Saturday, August 29, 2009 9:11 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Wanted: IFR FM/AM 1500 Owners Manual
Does anyone have an
Dave,
Actually, it's a good idea for all Amateur repeaters in a geographic area to
use the same CTCSS tone. With very few exceptions, all 6m, 2m, 220, and 440
repeaters in Santa Barbara County use 131.8 Hz. We don't have interference
problems, and it makes it easy for travelers to contact local
Same CTCSS (PL) codes can and sometimes do contribute
toward some very weird repeater and site mix problems. If you
look at a spectral display of a busy repeater site... you'll
often see a lot of oscillators, injection chain signals,
microprocessor signals, yadda, yadda. When the wrong
...Since there is NO two PL's the same, the problem went away...
The problem [intermod] did not go away - you just masked it so you don't hear
it. It is still causing degradation of the receiver's effective sensitivity.
At 08:06 AM 8/30/2009, you wrote:
Does having numerous repeaters PL'd with the same tone freq.
increase the probability of the normally generated intermod/mixed
signal to now carry within the produced signal a correct PL tone
that may land on the input freq. of another local repeater? Is it
Hello Group
This is slightly OT, but I have exhausted all resources, and am at a dead end!
About a year ago (on this list), some folks were chatting about EOC
Frequencies Are they really in existance? I am familiar with SEMNET low band
fxs, but are there any VHF/UHF federal fxs available?
OK, you'll have to explain how a different tone on the TX changed the
mixing products of the RF frequencies.
I bet it's more of a case where the problem was still there, just
hidden. At least if the problem is seen/heard, you can fix it. If you
don't know it's there, then you have minimal
Again, explain how the mixing products or intermod changed.
If that's true, maybe you're really on to something. If I can eliminate
intermod by changing the PL tone or the CWID, that would be an
incredible breakthrough in RF physics.
Joe M.
Jim Cicirello wrote:
I can tell you that the
I think there are advantage to all metal plumber's delight antennas for VHF
UHF. I would go for an all copper folded dipole. Split the far end dipole
element feed it there using a balun made using a 1/2-wavelength piece of
coax; run the coax feedline in from the grouinded antenna clamp.
Thanks vy much for doing this, Joe. What a lot of work!
--John
--- On Sun, 8/30/09, Joe k1ike_m...@snet.net wrote:
From: Joe k1ike_m...@snet.net
Subject: Re: [Repeater-Builder] Wanted: IFR FM/AM 1500 Owners Manual
To: Repeater-Builder@yahoogroups.com
Date: Sunday, August 30, 2009, 6:14 AM
On Aug 30, 2009, at 7:06 AM, WA3GIN wrote:
Does having numerous repeaters PL'd with the same tone freq.
increase the probability of the normally generated intermod/mixed
signal to now carry within the produced signal a correct PL tone
that may land on the input freq. of another local
At 8/30/2009 09:25, you wrote:
On Aug 30, 2009, at 7:06 AM, WA3GIN wrote:
Does having numerous repeaters PL'd with the same tone freq.
increase the probability of the normally generated intermod/mixed
signal to now carry within the produced signal a correct PL tone
that may land on the
On Aug 30, 2009, at 10:39 AM, n...@no6b.com wrote:
At 8/30/2009 09:25, you wrote:
On Aug 30, 2009, at 7:06 AM, WA3GIN wrote:
Does having numerous repeaters PL'd with the same tone freq.
increase the probability of the normally generated intermod/mixed
signal to now carry within the
Here in central Texas we typically use 123.0 for all repeaters for uniformity,.
It makes it easier for folks to remember. there are quite a few on 2 meters
and they never cause any problems with each other. WB5OXQ.
- Original Message -
From: WA3GIN
To:
Bingo... polarity jumper. Thanks much!
--- In Repeater-Builder@yahoogroups.com, DCFluX dcf...@... wrote:
In that case make sure the COR polarity jumper on the DL-1000 is on
the right setting and that the cable between the controller and the
board is installed correctly.
Also you may try
FS: KTM Model FMC-0.5B Isocoupler
Brand new in the box. Currently tuned for 152-153MHz. Can be retuned for ham
band. Perfect to install your repeater antenna on an AM broadcast tower.
Eric
KE2D
We recently put a new 6m repeater on the air using a NHRC 3+ controller. We
programmed in the CW ID and set an interval of 10 minutes (the controller
responded OK when we set it). However, the CW ID is not working at the
desired interval and, actually, seems kind of random as to when the
Are you wanting the cwid to act like a beacon?
i.e. id every 10 minutes regardless of activity?
You'd have to schedule that. Id timers don't handle that way.
Chris
Kb0wlf
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
buil...@yahoogroups.com] On Behalf
--- In Repeater-Builder@yahoogroups.com, surf_boy82 surf_bo...@... wrote:
Does anyone have an owners manual for the IFR FM/AM 1500 that is surplus to
their needs? I've had one for quite a while and I'm familiar with most of
it's operation but wouldn't mind having the proper manuals for it.
I have a chance to acquire an IFR 1600S and would like some users reports on
their experience relative to the instruments performance and reliability to
help me make my decision!
Are manuals available somewhere for these units other than from IFR??
Thanks for your help!!
Lloyd
VE3ERQ
--- In Repeater-Builder@yahoogroups.com, surf_boy82 surf_bo...@... wrote:
Does anyone have an owners manual for the IFR FM/AM 1500 that is surplus to
their needs? I've had one for quite a while and I'm familiar with most of
it's operation but wouldn't mind having the proper manuals for it.
Hi All,
Have the club portable CDR700 using two CDM750 radios. Question is how and
where do add the call sign for cwid or is it not available.
Mike Mullarkey K7PFJ
6886 Sage Ave
Firestone, Co 80504
303-954-9695 Home
303-954-9693 Home Office Fax
303-718-8052 Cellular
--- In Repeater-Builder@yahoogroups.com, va3wxm va3...@... wrote:
We recently put a new 6m repeater on the air using a NHRC 3+ controller. We
programmed in the CW ID and set an interval of 10 minutes (the controller
responded OK when we set it). However, the CW ID is not working at the
At 8/30/2009 09:57, you wrote:
When area plans show something like repeaters in this area all use
CTCSS tone X I always cringe a little.
Sure makes it a lot easier for travelers to find all the local
repeaters.
Bob NO6B
Who's so dumb that they SCAN with CTCSS Decode turned on?
--- In Repeater-Builder@yahoogroups.com, afa5tp w7...@... wrote:
Hello Group
This is slightly OT, but I have exhausted all resources, and am at a dead
end!
About a year ago (on this list), some folks were chatting about EOC
Frequencies Are they really in existance? I am familiar with
There used to be RACES frequencies, but I think that provision went away
years ago. Not sure.
Chuck
WB2EDV
- Original Message -
From: druhe614 dr...@atlanticbb.net
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 30, 2009 4:09 PM
Subject: [Repeater-Builder] Re: EOC
Why do you cringe? Don't you have any faith in ham's ability to put on
quality repeaters or fix problems?
As has been noted, many areas have used the same tone with great
success. The only ones who haven't had great success have issues that
using different tones only masks and doesn't solve.
Mike,
The CDR700 Service/Programming Manual 6864110R66 (still available from
Motorola Parts for about $15) makes no mention of any ID capability when
equipped with the basic (R*I*C*K) controller. The optional ZR340 controller
does include CWID capability.
I find it odd that the manual
I have a 1600S, have had it now for about 3 years. No trouble at all. I
Love it.. The operators manual is available on the net in a PDF, however I
got mine from the company I purchased the Monitor from in printed form.
It's
several hundred pages.
Gary - K7NEY
shibukiau wrote:
I have a
You can email the vendor, even on the weekends. He is very helpful and
responsivel
- Original Message -
From: va3wxm
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 30, 2009 3:21 PM
Subject: [Repeater-Builder] NHRC 3+ CW ID'ing problem
We recently put a new
Here is one reason to have a different PL Tone...close spacing. Here in NOVA
146.625 and 146.610 are two repeaters spaced on opposite sides of WDC.
Coverage is about the same. .625 users frequently bring up the .610 machine
due to intermittant over deviation, etc. If the .610 machine had the
The RACES freqs. have been closed down for some time now. Just no need for
them. It wouldn't surprise me if MARS freqs. for hams also disappears.
- Original Message -
From: Chuck Kelsey
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 30, 2009 4:21 PM
Subject:
At 8/30/2009 14:34, you wrote:
Here is one reason to have a different PL Tone...close spacing. Here in
NOVA 146.625 and 146.610 are two repeaters spaced on opposite sides of
WDC. Coverage is about the same. .625 users frequently bring up the .610
machine due to intermittant over deviation,
Yes that is what you get, take it or leave it. So, different PLs do have a
place in the game in situations such as this. Its not a technology issue, just
luck of the draw.
- Original Message -
From: n...@no6b.com
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 30,
If there is interference with the same tones, there is interference with
different ones, too.
Again, proper engineering (coordination in this case) is a necessary
first step, and selecting different CTCSS tones to mask a problem is not
a solution.
Overdeviation? Another engineering
Uninverted - inverted - they both try to cram 16 kHz bandwidth channels
into 15 kHz. That is always going to create problems compared with
proper bandplan spacing.
What's even more ironic is the Land Mobile industry (and FCC) hasn't
learned anything from their past mistakes. They are now
...unforatunately we don't exist in a perfect world...so waxing the 1973 Jeep
works good enough and is less expensive than repainting it...different PLs in
the case in point masks the deffecency well enough to allow relatively good
repeater services to coexistance under less than ideal
As long as you know that the problem still exists...
As for the perfect world, if you accept imperfection, it never will be.
I take it the root of the problem is that these two repeaters were
coordinated too close together?
Joe M.
WA3GIN wrote:
...unforatunately we don't exist in a
Skipp,
The DeskTrac controller is programmed separately from the radios. There is
a switch hidden behind the snap-cap in the middle of the front panel, below
the Power LED, that selects which is programmed. Position 1 is used to
program the transmitter, position 2 is used to program the
Couldn't agree more with you Joe. In all of the WDC area we are the only two
repeaters that have such close spacing..we're special, haha. We've asked other
repeater owners, those low power low antenna, small coverage operators who
wouldn't be bothered by the close spacing to trade but seems
There are NO MARS frequencies for HAMS.
David
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of WA3GIN
Sent: Sunday, August 30, 2009 4:44 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re:
Can't explain it Joe. All I can tell you is that our 7.21 2-Meter Repeater
had users in weak signal areas completely wiped out when the community
repeater and the fire transmitter came up when they were on 2-meters. As I
said we changed the PL's and that is ALL I did and now the same stations
talk
Hi,
I would like to hear of any details regarding interference caused to VHF
repeaters sharing the same site with broadband internet Canopy equipment.
I have a repeater which is experiencing a frying like noise on received signals
being transmitted by the VHF repeater.
As the VHF received
Is the Canopy system operating in 900 MHz or 2.5 or 5 Gigs? It makes a
difference when chasing interference and Motorola has deployed Canopy on
all of the above unlicensed frequencies as well as some others.
W6AMS
From: Repeater-Builder@yahoogroups.com
The RACES program and therefore RACES frequencies, is localized, depending on
the community or state's involvement in Emergency Management/Civil Defense.
For Example here in Massachusetts the program is quite strong, with a good
heirarchy and community involvement. I beleive that RACES is
At 05:18 PM 8/30/2009, you wrote:
Yes that is what you get, take it or leave it. So, different PLs do
have a place in the game in situations such as this. Its not a
technology issue, just luck of the draw.
It is simply VERY poor planning and design. This is the game of: I
plan to set up and
5 gigs
When testing, when none of the six panels were powered there was no noise.
When only one panel was turned on the noise was not very strong but as each of
the others were turned on the noise increased.
One of the panels seemed to cause more than the others.
Bruce, ve1ii
--- In
What kind of spacing are we talking, out of curiosity?
Joe M.
WA3GIN wrote:
Couldn't agree more with you Joe. In all of the WDC area we are the
only two repeaters that have such close spacing..we're special, haha.
We've asked other repeater owners, those low power low antenna, small
4 miles
- Original Message -
From: MCH
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 30, 2009 10:07 PM
Subject: Re: [Repeater-Builder] Nearby Repeaters
What kind of spacing are we talking, out of curiosity?
Joe M.
WA3GIN wrote:
Couldn't
Thanks for the comments Gary -- much appreciated!!
Could you send me the link for the operators manual?? I don't have any info on
the unit so I'm sort of flying blind trying to run this unit!!
Thanks again for your help!!
Lloyd
VE3ERQ
--- In Repeater-Builder@yahoogroups.com, Gary Hoff
RIght they are just MARS frequencies...I get confused because here MARS holds
HAMCRAM classes on weekends and then issues MARS CALL SIGNS.
- Original Message -
From: David Murman
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 30, 2009 8:05 PM
Subject: RE:
One of our 2M receive sites is shared with Canopy operating on 900. Our
physical configuration is on top of a grain elevator. Our 2m antenna was
mounted on a 30ft. tower which put our antenna about 20ft. horizontally at
about the same height as the Canopy panels.
We had moderately severe
On Aug 30, 2009, at 2:00 PM, n...@no6b.com wrote:
IMO, if different CTCSS freqs. are required to keep co-located amateur
systems from talking to each other, there is an engineering deficiency
somewhere.
Totally agreed, which is exactly why COORDINATING bodies really should
care, either
For Sale:
Link Comm RLC-3 controller
Includes 7 radio cards total one newer single DB9 style card, and 6 older
dual (separate
radio/serial) DB9 style cards. Also includes two analog/IO cards. All cards
have latest firmware eproms, and the main board has the latest v2.15 firmware.
$1200 plus
My club has a like new UHF MSR2000 repeater that works very well. We have
three 100% duty cycle Micor power amps.
Is there an easy way to make these two systems work together.
I think the only gotcha is the power control which seems to be integral to
the MSR2000 power amp and outboard of the
There is NO controller in the DeskTrac repeater. There is a interface between
the receiver audio and the transmitter audio input, and a simple dropout timer
in the RUS to RPPTT. None of these are in the programming/RSS.
Look for the RPTR DISABLE led on the front panel, this breaks the PTT line
I haven't had much luck locating low band, low split Maxtrac's for use on 10m.
These radios' model numbers don't tell what split it is; you have to crack open
the radio, remove a shield read a number on a board. So, the ebay crowd
won't/can't do this; if the seller doesn't know what freq they
I sent it to Mike WA6ILQ for posting on the Repeater Builder Site, It's a
really big file, youcan get it there when he gets it posted. I
couldn't find it
again on the internet but had a copy on my system.
Gary
shibukiau wrote:
Thanks for the comments Gary -- much appreciated!!
Could
On Aug 30, 2009, at 9:01 PM, Nate Duehr wrote:
On Aug 30, 2009, at 2:00 PM, n...@no6b.com wrote:
IMO, if different CTCSS freqs. are required to keep co-located
amateur
systems from talking to each other, there is an engineering
deficiency
somewhere.
Totally agreed, which is
Hello Lloyd,
I have this monitor, I bought it recently and Im trying to explore the
equipment but whitout the user manual it semms to be a little bit dificult
Ive try to find more informations on the web and nothing also I call
Aeroflex and it was tough because this monitor is the
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