> -Original Message-
> From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
> buil...@yahoogroups.com] On Behalf Of Paul Kelley N1BUG
> Sent: Monday, July 20, 2009 6:16 AM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Isolator vs intermod panel?
>
> I
h are antenna side issues.
Doug
KD8B
>From: Repeater-Builder@yahoogroups.com
>[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Paul Kelley N1BUG
>Sent: Monday, July 20, 2009 5:16 AM
>To: Repeater-Builder@yahoogroups.com
>Subject: [Repeater-Builder] Isolator vs intermod panel?
>
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Paul Kelley N1BUG
Sent: Monday, July 20, 2009 5:16 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Isolator vs intermod panel?
I guess I was lucky in my first few years as a repeater owner.
Lately I have nothing but
I guess I was lucky in my first few years as a repeater owner.
Lately I have nothing but grief in many forms. (Yeah I know, welcome
to the real world!)
Can someone tell me in basic terms what is the difference between an
isolator and an intermod suppression panel which contains an isolator?
If
-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of offtrack
Sent: Friday, May 15, 2009 7:27 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Isolator Loss
Hi all,
Thanks for the group it has helped me out a bunch.
My system here is a
Hi all,
Thanks for the group it has helped me out a bunch.
My system here is a Kenwood TRK K2 and Telwave TPRD-1556 6 can set.
Feed line is Heliax LDF4-50A about 70 feet and the antenna is a Diamond F22
that has been worked over and sealed up better.
The system is new and today I added a Telwave
At 11/12/2008 20:20, you wrote:
>Ron,
>
>Contact EMR and request a copy of the bulletin, "Field Tuning of Isolators."
>Be aware that typical circulators and isolators can be field-tuned perhaps
>+/- 2% from the frequency for which they were made. If you want to use it
>at a new frequency that is m
Have you checked the web site that accompanies this Yahoo! Group?
Bob M.
==
--- On Wed, 11/12/08, Ron Wright <[EMAIL PROTECTED]> wrote:
> From: Ron Wright <[EMAIL PROTECTED]>
> Subject: [Repeater-Builder] isolator
> To: Repeater-Builder@yahoogroups.com
> Date: Wedn
procedure.
73,
Steve Allred / K6SCA
RF System Engineer
209-948-9611
--- On Wed, 11/12/08, Eric Lemmon <[EMAIL PROTECTED]> wrote:
From: Eric Lemmon <[EMAIL PROTECTED]>
Subject: RE: [Repeater-Builder] isolator
To: Repeater-Builder@yahoogroups.com
Date: Wednesday,
al Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright
Sent: Wednesday, November 12, 2008 8:01 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] isolator
Hi all,
I have aquired a EMR Isolator, model 7450/4 for 150-170 Mhz and tuned
to 15
Hi all,
I have aquired a EMR Isolator, model 7450/4 for 150-170 Mhz and tuned
to 155 MHz.
It has 3 tuning adjustments so need to retune it.
Can anyone give info as to how to tune it or where I can get info. EMR
has good info on what it does and how it works, but found nothing at
their site o
On Thu, 5 Jun 2008, KF4TNP wrote:
> If using your system for example and want better power output
>
> If money is no issue then you can run another 300' 1-5/8" line. And
> another antenna
>
> Split only the tx combiner system into 2 tx antennas
They are already looking into this or have implem
Running 19 chs X 4 sites Simulcast / Voters - Already split antennas - 9
ch / 10 ch DB Spectra combiners - Still get around 37 watts after
combining 100 watt station - The old DB CUBE was a little better on loss
- would need another room for combining, though. Steve NU5D
KF4TNP wrote:
>
> Jam
: Thursday, June 05, 2008 4:05 PM
To: 'Repeater-Builder@yahoogroups.com'
Subject: RE: [Repeater-Builder] isolator - circulator loss
I'd love to only have 2.5 dB loss. We're over 5 dB here on our 10 channel
site but some of our freqs are 250 kHz apart too (800 MHz Trunked).
- Original Message -
From: Jamey Wright
To: 'Repeater-Builder@yahoogroups.com'
Sent: Thursday, June 05, 2008 3:05 PM
Subject: RE: [Repeater-Builder] isolator - circulator loss
I'd love to only have 2.5 dB loss. We're over 5 dB here on our 10 channe
I'd love to only have 2.5 dB loss. We're over 5 dB here on our 10 channel site
but some of our freqs are 250 kHz apart too (800 MHz Trunked).
100W through the combiner and through 300 Ft of 1 5/8 cable (plus Polyphaser,
jumpers, connectors, etc) yields between 15 and 20 watts (calculated) at th
Amen Paul,
In the real commercial radio world... when working on or into
combiner systems... some people would give their first born to
have less than 2.5 dB loss per channel.
Although the entire path to the antenna can be a lossy son of
a gun, it is the only real game in town worth playing.
Sorry, that last message was supposed to be direct...
Ed,
I have a new Telewave single-stage high-power (300 watt I believe) isolator.
What frequency do you need? I can put it on the network analyzer to make
sure it meets spec at your frequency. I'd sell it for half of whatever
Telewave list price is, and again, it's brand new, still in the orig
>From a previous message on this group;
Many radio communications equipment manufacturers make
isolators: EMR, Celwave, Decibel Products, Telewave,
TX-RX, and also Andrew, Connecticut Microwave, MECA,
REC-USA, and Raditek, and many more.
Contact suppliers such as TESSCO or TALLEY for prices.
Paul
>From a previous message on this group;
Many radio communications equipment manufacturers make
isolators: EMR, Celwave, Decibel Products, Telewave,
TX-RX, and also Andrew, Connecticut Microwave, MECA,
REC-USA, and Raditek, and many more.
Contact suppliers such as TESSCO or TALLEY for prices.
Paul
Hello,
Building a combiner now. Frequency is between 400-520Mhz and power is 10W. Need
to add isolator/circulator to improve the isolation. Anybody knows suppliers to
provide this isolator/circulator?
Best Regards,
Kent Chong
Send instant messages to your online friends http://asia.messenger.
Well, I got this large 19" rack panel: came with a Bird RF Low
Pass Filter #5041 labeled 50 MHz cut off.
Also included is a Microwave Associates three port isolator ...
with Model 7N053B, 43.56 MHz on the label. The 50 ohm load is
missing - the reason I was able to buy it for about $
At 3/10/2005 11:21 AM, you wrote:
> Has anyone ever tried to retune a low-band (43 MHz) Isolator to
> the 6 meter band?
>
> Neil - WA6KLA
Where would one even find such a beast today? EMR's only go down to 66 MHz
now.
Bob NO6B
Yahoo! Groups Links
<*> To visit your group on the
Has anyone ever tried to retune a low-band (43 MHz) Isolator to
the 6 meter band?
Neil - WA6KLA
Bob Dengler wrote:
>
> At 3/9/2005 10:43 PM, you wrote:
>
> >Tom,
> >
> >If you have been following this thread for a while, you probably have
> >picked up on the fact that the typical iso
At 3/9/2005 10:43 PM, you wrote:
>Tom,
>
>If you have been following this thread for a while, you probably have
>picked up on the fact that the typical isolator cannot be tuned more
>than 1 or 2 MHz away from the original factory tuning.
This is incorrect. See
http://www.repeater-builder.com/s
Tom,
If you have been following this thread for a while, you probably have
picked up on the fact that the typical isolator cannot be tuned more
than 1 or 2 MHz away from the original factory tuning. It takes more
than a spectrum analyzer to properly tune a circulator or isolator.
Moreover, the t
i need one of those monster 300+ watt capable circulators from (i think)
rockwell.
these are fairly broad-banded (last one i saw was 140-155) and requires NO
TUNING.
i can't seem to find the one i had and i have a 350w MSF station i just put
on 2m
that i really need this for. i'm not so con
Antenna Specialist used to have this model J-2101 listed in there
catalog.
Wa8ili,Bernie
Yahoo! Groups Links
To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/
To unsubscribe from this group, send an email to:[EMAIL PROTECTED]
Your use of
After losing a PA I am wanting to put an isolator in line before installing the new amp and was needing some information about an isolator I have, it is a Microwave Associates model # J-2101multi stage isolator origionaly on 460 Mhz. Does anyone know if it can be retuned down to 442 Mhz? o
Bob (NO6B),
Congratulations on the frequency shift of the Isolator. Bet there is a
lot of people on this reflector like me that wouldn't attempt that.
Gary K2UQ
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To
At 12/28/2004 05:52 PM, you wrote:
>Purchased a nice RFS Systems model PCC150-B off E-Bay set for 158.1 mhz. Sent
>it to factory for realignment to 2 meter band. Required test for magnet and
>reglue, replacement of a coil and re adjustment, modification of filter,
>reset
>isolator output trap. C
Purchased a nice RFS Systems model PCC150-B off E-Bay set for 158.1 mhz. Sent
it to factory for realignment to 2 meter band. Required test for magnet and
reglue, replacement of a coil and re adjustment, modification of filter, reset
isolator output trap. Cost was $125 plus shipping back in May
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