At 08:19 AM 07/28/10, you wrote:
GE PR36, shudder!
A brick with wires that easily broke when the case was opened or shut.
Not a nice radio to have on the bench.
I ran a Portamobile 1 on 52.525 about 10 years ago, guess I'll have
to dig it out of the storage and see what shape it's in these
- Original Message -
From: Com/Rad Inc
To: kenwood_...@yahoogroups.com
Sent: Wednesday, July 28, 2010 7:39 PM
Subject: TKR750 -Preamp
Greetings Group
Have any of you experimented with a RX pre-amp for the TKR 750 repeater?
I am seeking results of actual trials of a product -
At 04:30 AM 7/29/2010, Com/Rad Inc wrote:
ubject: TKR750 -Preamp
Greetings Group
Have any of you experimented with a RX pre-amp for the TKR 750 repeater?
I am seeking results of actual trials of a product -
Anyone care to comment on their experience(s) ?
We use AngleLinear PHEMT preamps
I think you (Skipp) may be confusing 130C with one of the other 3M products.
130C is the self-vulcanizing (self-amalgamating?) tape. It has no adhesive;
it's not sticky or gooey; itt doesn't leave any residue. In fact, it
doesn't even leave a black stain on connectors like regular vinyl
Where does one obtain these and at what cost?
Doug
On 29/07/2010 15:58:54, Ken Arck (ah...@ah6le.net) wrote:
At 04:30 AM 7/29/2010, Com/Rad Inc wrote:
ubject: TKR750 -Preamp
Greetings Group
Have any of you experimented with a RX pre-amp for the TKR 750
repeater?
I am
Hi,
Thanks for your info. Though a bit complicated, it is still doable.
By the way, how to measure the cable fault location without the 11807 software?
Thanks and Regards,
Dickson Fu
VR2WHF
--- In Repeater-Builder@yahoogroups.com, ve7fet yahoogro...@... wrote:
First you'll need a return
At 10:30 AM 7/29/2010, Doug Hutchison wrote:
Where does one obtain these and at what cost?
http://www.anglelinear.com
Chip Angle is arguably one of the top 10 RF guys in the world
Ken
--
President and CTO - Arcom
Another very good choice for this application is the GLB Preselector / Preamp
from Simrex Corp.
I have several of these deployed on 144 / 220 / 440 Amateur repeaters and they
all perform very well. They can be tuned to maximize gain or selectivity per
your requirements and their support is
Thank you both.
Doug
On 29/07/2010 19:34:24, Steven M Hodell (st...@shodell.net) wrote:
Another very good choice for this application is the GLB Preselector /
Preamp from Simrex Corp.
I have several of these deployed on 144 / 220 / 440 Amateur repeaters
and
they all perform very well.
Those CDM radios are a bit pricy at $550 each. But I appreciate the suggestion.
And you've given me some ideas.
I still like the idea of building an out of band repeater for the remote
receive site from a Micor chassis. I would need a 406-420 exciter, bandpass
filter and trippler. If anybody
I emailed Spantek. They told me they don't do Micor's any more. CW Wofle
appears to not be in business as I can't find them on the web. Any other ideas
where I might find some UHF low split Micor parts?
--- In Repeater-Builder@yahoogroups.com, Mike Morris wa6...@... wrote:
Look at W6KGBs
I have move the800 mhz chunk to 900 ham operation wide dev. I have not had
time to test the pa's to see how happy they can be tricked to efficient
operation. The chunk is the easy part, getting those 150 and 75 watt 800 pa's
may result in a lot of hair on the floor.
.
Bill
Atlanta
--- In
I have move the800 mhz chunk to 900 ham operation wide dev. I have not had
time to test the pa's to see how happy they can be tricked to efficient
operation. The chunk is the easy part, getting those 150 and 75 watt 800 pa's
may result in a lot of hair on the floor. If some one wants to
On 7/29/2010 2:36 PM, Tim - WD6AWP wrote:
I emailed Spantek. They told me they don't do Micor's any more. CW
Wofle appears to not be in business as I can't find them on the web.
Any other ideas where I might find some UHF low split Micor parts?
If it's got to be Micor it's hamfest
More great info from Frank @ SIMREX.
Steve ~ KA1RCI
- Original Message -
From: Frank Neuperger
To: fr...@simrex.com
Cc: Steven M Hodell ; maqui Mike Aquilino ; sa...@simrex.com
Sent: Thursday, July 29, 2010 4:15 PM
Subject: Re: [Repeater-Builder] Fw: TKR750 -Preamp
Steve,
Hello Tim.
I just looked in my storage site and I found a Micor Base/Repeater which is
on the band split of 402-430 MHz. I do not have channel elements for it.
I know it was working when it came out of service a few years ago, and the
PA can be used as a digital station, as it takes the four pin
This unit looks like the answer for me..I think!
I am in the process of building 2 repeaters on 70cm for possible emergency use
by our Amateur Radio Club. Both will be very portable, I have Vertex VX-2200
radios for one, Hamtronics T304/R306 boards for the other. In keeping the
units very
Re: TKR-750 RF Preamplifiers
Com/Rad Inc com-...@... wrote:
Have any of you experimented with a RX pre-amp for
the Kenwood TKR-750 repeater?
Yeah, once or twice...
I am seeking results of actual trials of a product -
'bout killed myself once trying a Thighmaster...
Anyone care to
Re: Simrex - GLB Pre-Selector Pre-Amplifier
The Simrex (aka GLB) units are actually amplified pre-selector
assemblies, not just plain wide-band Receive Pre-Amplifiers.
There's a reason why these units offer/spec 8dB Gain versus
the others un-protected preamps. The less obvious gain
when
Some man sir..TU
Doug
On 29/07/2010 22:31:49, skipp025 (skipp...@yahoo.com) wrote:
Re: TKR-750 RF Preamplifiers
Com/Rad Inc com-...@... wrote:
Have any of you experimented with a RX pre-amp for
the Kenwood TKR-750 repeater?
Yeah, once or twice...
I am seeking results of
At 7/29/2010 11:34, you wrote:
Another very good choice for this application is the GLB Preselector /
Preamp from Simrex Corp.
I have several of these deployed on 144 / 220 / 440 Amateur repeaters and
they all perform very well. They can be tuned to maximize gain or
selectivity per your
Does anyone know who would do an Intermod study for a site that has
900MHZ spread spectrum on it? I have done some very basic intermod
runs, but don't quite know how to handle spread spectrum nor who to
refer to for this service.
Any ideas?
Thanks, Joe, K1ike
At 7/29/2010 14:59, you wrote:
Re: Simrex - GLB Pre-Selector Pre-Amplifier
The Simrex (aka GLB) units are actually amplified pre-selector
assemblies, not just plain wide-band Receive Pre-Amplifiers.
There's a reason why these units offer/spec 8dB Gain versus
the others un-protected preamps. The
On Jul 30, 2010, at 9:31 AM, n...@no6b.com wrote:
At 7/29/2010 14:59, you wrote:
Re: Simrex - GLB Pre-Selector Pre-Amplifier
The Simrex (aka GLB) units are actually amplified pre-selector
assemblies, not just plain wide-band Receive Pre-Amplifiers.
There's a reason why these units
Hello Doug
Pre amplifiers are nifty gadgets. In my email I am seeking some personal
references about this particular radio and a pre-amp which
may have been tried wioth some level of success.
When you start inserting GAIN ahead of a front end you have to be careful of
overloading the system
Hello to All,
I want to turn the power down on my Motorola R1225 repeater to about 5
watts. It is the high power UHF version (25-45 watts). The reason for
the low power is to drive a power amp at the output I want to achieve.
Any drawbacks to running the R1225 this low?
73, Joe, K1ike
Joe,
Yes, indeed! The UHF high-power version will likely either go spurious or
burn up if set that low. The only way to go with the radio you have is to
add a 6 or 10 dB power attenuator rated at no less than 25 watts, and set
your TX power at the low end. Admittedly, this is a kluge of the
Thanks Eric,
I though there was a caveat to turning it down, but couldn't remember
why. I want to experiment with an EchoLink repeater, but I'm not sure
that the R1225 UHF hi power could hold up at 25 watts continuous duty.
I think I'll do some shopping as you suggest.
73 and Thanks,
Joe
n...@... wrote:
...but what is the noise figure?
I'm going to ask this every time someone says they
perform very well.
Bob NO6B
Depends on the Pre-Selectors Generation and options. The original
active device could be one of a few different types. After a
period in time a GasFet upgrade
If you have a spectrum analyzer, be sure and check it for spectral
purity. *Most* radios don't like to have their power cut back that far.
Scott
Scott Zimmerman
Amateur Radio Call N3XCC
474 Barnett Road
Boswell, PA 15531
Joe wrote:
Hello to All,
I want to turn the power down on my
At 7/29/2010 16:52, you wrote:
Yes, but the NF is unpublished unknown. I therefore assume it's poor,
maybe 3 dB?
A Chip Angle GaAsFET @ UHF has 0.5 dB NF. Put a 1/4 wave pass cavity with
0.5 dB loops in front of it you have a narrow 1 dB NF front-end. I'll
take 1 dB NF over 3 dB NF any day.
At 7/29/2010 19:04, you wrote:
The Noise Figure is not always the most important specification.
s.
OK, I have an RFPA for sale that performs very well. And that's all I'm
going to say about it. ;)
Without a NF spec, it's impossible for an RF system designer to determine
if the device is
Is there an issue running one of those at 25 watts continuous? It is a
repeater. What was it's intent if not to be used in a heavy duty cycle?
73,
Robert
K5ILS
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Joe
Sent: Thursday, July
I am selling a GE Mastr II UHF repeater already set up for the Arcom RC210
controller. GE preamp installed and crystaled up for 441.950 with a ts64
board installed. 75 watt PA and it is ready to go. No, this is not a
repeater builder built repeater but otherwise is a good condition machine.
I disagree on the price of the CDM's. You can get the CDM-750 (4-channel)
for as low as $75 to $125 if you watch for them on e-bay. The CDM-1250 and
CDM-1550 are more expensive used, but still you should be able to get them
for $250 or less if you just have to have the 128 channels and alpha
Charlie,
This is a tough one. The Y prefix indicates an RCC duplex radio, and the
ER42M and ET59L indicate a Mastr Progress Line 35 watt radio for the 450-470
MHz band. I wonder if the 80 you quoted might actually be 88? Better
double-check the Combination Number to make sure you're reading it
Robert,
The R1225 was never intended to be used in a heavy duty application. When
marketed in its GR1225 desktop configuration, it was presented as a
light-duty, local-area repeater for construction sites and similar low
duty-cycle applications. Since the GR1225 included a
Hi guys,
Took some time away from the project... loosing too many hairs.
Ok, I've gotten another receiver strip, and it has the specified
sensitivity per Mot.
Guess I want to bounce some ideas around with those of you
who are more learned in the arts!
With 250mW (+24dBm) into the transmit
What's it take to program those radios?
--
Tim
:wq
On Jul 29, 2010, at 8:45 PM, James Adkins wrote:
I disagree on the price of the CDM's. You can get the CDM-750 (4-channel)
for as low as $75 to $125 if you watch for them on e-bay. The CDM-1250 and
CDM-1550 are more expensive used, but
See page five for an explanation of the process...
http://206.209.106.106/datasheets/Miscellaneous/54100a-4.pdf
Again, doable, but messy.
Lee
--- In Repeater-Builder@yahoogroups.com, Dickson dicksonf...@... wrote:
Hi,
Thanks for your info. Though a bit complicated, it is still doable.
Any windows PC with a serial port, an aftermarket or real Motorola cable
and software.
On Thu, Jul 29, 2010 at 11:05 PM, Tim Sawyer tisaw...@gmail.com wrote:
What's it take to program those radios?
--
Tim
:wq
On Jul 29, 2010, at 8:45 PM, James Adkins wrote:
I disagree on the price
A dispatcher was treated for electrical shock on May 2 after lightning
sent a
power surge through the dispatcher's headset.
http://richmondregister.com/localnews/x1255109983/Lightning-surge-injure\
s-911-dispatcher
http://richmondregister.com/localnews/x1255109983/Lightning-surge-injur\
I never saw the highly modified HT-200 of Dick's but I have heard stories of
the infamous Drinkie-Talkie (as I heard it referred by) from Neil WA6KLA
several times over the years.
I remember that Dick's 2m repeater was great to use and listen to in the Mid
70's on my trips into the LA area.
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