John,
I don't know. I believe the calibration fees are pretty uniform, but
the repair figures I quoted were based on the IFR-1200S. In my one
personal experience, IFR fixed three separate problems for $700. The
problems I reported were a periodic unlocking of the synthesizer and a
regular
Hi If it's what I think it is .I have one, it is a UHF Corinary
monitor radio on medical frequencies..Full Duplex with a duplexer
built in.
It is capable of transmitting 3 leads of a EKG and voice at the same
time. It has a flip up lid to expose a very small control panel,
handset with a
Steve Bosshard wrote:
Unless the problem ISN'T two signals occupying the same spectrum, and
it's just a matter of one receiver hearing outside its 'channel'.
Joe M.
146R325 occupies from 146315 to 146.335
146.310 occupies from 146.300 to 146.320
They SHARE 146.315 to 146.320.
Oh
Oh Really? If you ASSUME (and you know how I mean that word) that each TX
HAS to have 20 kHz of bandwidth, I guess so, but that's not necessary. Only
if you have 5 kHz deviation and a 5 kHz of frequency response (or some
equivalent combination) will that be true. Most radios, including ham
This is the reason I suggest just adding a helical to the front end of
the regency, they really don't have evidence of a grat overlap or
overload unless a user has a really wide signal which sounds like it may
be the case. In the beginning I was under the assumption it was the
output making spurs
At 10:36 PM 4/27/2004 -0400, you wrote:
This is the reason I suggest just adding a helical to the front end of
the regency,
There is nothing magical about helical resonators - John Phillip Sousa
Ken
--
President and
I would agree on the regency being wide as an elephant, but not my Kenwood
TS-2000, on a horizontal antenna, getting the user 15 Khz away. That is why
I believe it's his transmitter, and the other excessive power. I had
another ham 7 miles away transmit on 146.310 with 10 watts and he never
There is a rough adjust and a fine adjust.
Gregg R. Lengling, W9DHI, Retired
Administrator http://www.milwaukeehdtv.org
K2/100 S#3075 KX1 S# 57
Politics is the art of appearing candid and completely open, while
concealing as much as possible. -States: The Bene Gesserit View
-Original
Steve S. Bosshard (NU5D) wrote:
Reply:
Please refer to modulation index and Bessel functions. The frequency
response is 300 to 3000 hz emphasized at 3db per octave. Transmitter
instantaneous deviation is supposed to be limited to +/- 5 kc deviation
from center. Significant sidebands in
Hmmm, I think I have one of those books ... I just don't remember
it bring called an Apcor.
Neil - WA6KLA
Steve Bosshard wrote:
Back in the olden days when Adam 12 and Emergency were on TV, the guys
would call Rampart and send a strip back to the ER using a Coronary
Observation
Without directly commenting on the source(s) of problems here, it
should be clear that the front end is not the problem. Its the back
end, in other words, the low IF, where most of the narrowest
filtering occurs. The helical front end is as broad as a barn by
comparison, even in the finest
http://mc4.mohave.edu/mc4/images/lan3/CIMG0017.jpg
http://mc4.mohave.edu/modules.php?name=Forumsfile=viewtopict=29
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CARSON'S RULE
BANDWIDTH = 2 X (PEAK DEVIATION + HIGHEST MODULATING FREQUENCY)
Most 2M off the shelf radios I have seen lately in wide band FM hit at
least +/- 5kc peak deviation, and 6 to 6 ½ is not at all uncommon.
Measurements using HP8921 or IFR COM120B.
I have not run a swept transmit audio
Seemed like Pioneer also made a coronary observation radio using GE MPE
parts and pieces.
Ssb
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Steve S. Bosshard (NU5D) wrote:
CARSON'S RULE
BANDWIDTH = 2 X (PEAK DEVIATION + HIGHEST MODULATING FREQUENCY)
Thank you for quoting what I've been saying the past two posts.
Most 2M off the shelf radios I have seen lately in wide band FM hit at
least +/- 5kc peak deviation, and 6 to 6 ½ is
I have a IFR 1200 that the power supply seems to have gone out.. anyone know
someone that can repair this.
thanks
---
Tommie Taylor
Lampasas Skywarn Weather Repeater
145.330- 162.2T (SWLynx) / 444.875+ 88.5 (Echolink)
In a somewhat similar but distant situation a number of years ago,
I use a service monitor in the generate mode to test a repeater
that was about 9 miles away.
Neil - WA6KLA
Rogers, Ron wrote:
Remind the fellow using 100 watts to talk to a repeater that he
could be in violation
Hello,
Vari-notch is a TX-RX Company trade name.
Neil - WA6KLA
Ken Arck wrote:
At 02:54 PM 4/27/2004 -0500, you wrote:
The duplexers are a set of TX/RX duplexers, six of them. When you say a 3db
pad, that is something that I am not sure of, is this basically the same
thing as
Ahem ...
The was a regional ham radio swapmeet in the Salem, Oregon area
recently. One fellow was selling high-band brown handle GE Mastr
II's for $5.00 each.
I feel bad about not buying all of them so I could say in the
future Here, use this!!! instead of reading about the
At 4/27/2004 07:36 PM, Virden Clark Beckman [EMAIL PROTECTED] wrote:
This is the reason I suggest just adding a helical to the front end of
the regency, they really don't have evidence of a grat overlap or
overload unless a user has a really wide signal which sounds like it may
be the case.
Looks
At 4/28/2004 12:34 AM, you wrote:
Steve S. Bosshard (NU5D) wrote:
CARSON'S RULE
BANDWIDTH = 2 X (PEAK DEVIATION + HIGHEST MODULATING FREQUENCY)
Thank you for quoting what I've been saying the past two posts.
Here's a question: just what amount of the transmitter's TPO is Carson's
Rule
Gregg,
Very well written. Thank you for your effort here. Hopefully your
comments will be noted for future reference by others on this list.
73,
Neil McKie - WA6KLA
Gregg Lengling wrote:
You should really be using a return loss bridge and a spectrum analyzer and
tracking
Dave,
Get up with me off-line, and I can fix you up for the shipping. I have tons
of the stuff...
Mike
-Original Message-
From: David Schornak [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 28, 2004 3:00 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] 1 5/8
I've got 6 pcs 6 foot long of 3 1/2 inch if that would help
Dave / NØATH
- Original Message -
From: David Schornak [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, April 28, 2004 2:00 PM
Subject: [Repeater-Builder] 1 5/8 HARDLINE
does anyone here now where I can
So very true.
Neil - WA6KLA
Ronald Schiller wrote:
Hi Guys, Any of you ever hear of Modulation Acceptance? Test the receiver
and find out. No receiver made has a linear Pass Band and sometimes by
running the if cans to the second resonant point, you can find a more linear
point.
In fact, you'll actually be exceeding limits because that +/-5 Khz is
TOTAL deviation-including CTCSS/DCS/whatever! And since the spec for
CTCSS/DCS is +/-500 to 800 hz, and the spec for LTR signalling is
+/-1Khz, voice deviation cannot exceed +/-4.5 Khz (4Khz for LTR). And
the equipment is
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