Motorola GR500 UHF REPEATER
Motorola GR500 Description
Tuned And Aligned For Ham Split Frequency: Motorola R.I.C.K.
Interface, Duplexer, Built-In Power Supply, Battery Backup, Just Plug
In Your UHF Antenna And You Are On The AIR!!!
449.0250/Transmit 444.0250/Receive
PLTone 114.8 Hertz.
Motorola GR500 UHF REPEATER
Motorola GR500 Description
Tuned And Aligned For Ham Split Frequency: Motorola R.I.C.K.
Interface, Duplexer, Built-In Power Supply, Battery Backup, Just
Plug In Your UHF Antenna And You Are On The AIR!!!
449.0250/Transmit 444.0250/Receive
PLTone 114.8
I have a TLD-1100 vhf rcc unit in my garage somewhere. I used to use it many
years ago on the local rcc.
Are these things worth anything?
I think I also have an old motrac vhf radio that I had on rcc before that. I
bolted a duplexer on the top of it and made it full duplex and turned the
power
--- In Repeater-Builder@yahoogroups.com, kb5vjy [EMAIL PROTECTED] wrote:
Greetings,
I have a set of DB-4075's that I am having a problem tuning. One
of the filters won't notch anything at all out so I checked the
little
tuning cap on top and found that it was bad. It looked as
--- In Repeater-Builder@yahoogroups.com, kb5vjy [EMAIL PROTECTED] wrote:
Greetings,
I have a set of DB-4075's that I am having a problem tuning. One
of the filters won't notch anything at all out so I checked the
little
tuning cap on top and found that it was bad. It looked as
We have a 440 repeater with a Six meter remote base setup. On the
Six meter receiver we constantly get little pops that key up the
repeater and is quite anoying. The Pops are created by very close
TV station transmitters at the site and appear to be on channel so
filtering is not an option.
Thanks i found out its a Andrew dB224 - 155-165mhz, i was hoping it
would be in the 145mhz - 2 meter ham band range but it seems you cant
adjust this type of antenna.
--- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED]
wrote:
The characteristic impedance of a folded
I had exactly this same problem when I used an RCA TAC-200 radio as a
repeater. It would let small slivers of squelch COS through to the
controller and would key up the tail on the controller. In my case it
occurred every 10 or 15 minutes and was an artifact of the radio
squelch circuit.
I
At 06:11 AM 03/27/07, you wrote:
Thanks i found out its a Andrew dB224 - 155-165mhz, i was hoping it
would be in the 145mhz - 2 meter ham band range but it seems you cant
adjust this type of antenna.
Not without a hacksaw and a TIG ? MIG ? welder.
At 09:29 AM 03/27/07, you wrote:
We have a 440 repeater with a Six meter remote base setup. On the
Six meter receiver we constantly get little pops that key up the
repeater and is quite anoying. The Pops are created by very close
TV station transmitters at the site and appear to be on channel so
WTB - New DB224 antenna. 138-150 MHz split.
If you've got one in a box that you're never going to use, turn it into
cash now.
Contact me off list, please.
Thanks.
I've been told one way to lengthen the elements is to put a bolt
through the middle of the bends (top bottom) of each element.
Aluminum bolts would be preferred.
Of course, this does nothing to improve the match, but it may be
broad enough. Some experimentation would be in order...there's
The characteristic impedance of a folded dipole in free space is 280 Ohms per
John Krause in his book on Antennas page 417. Put that folded dipole next to
a metal pipe as on a DB 224 and the impedance changes to a resistive component
of about 125 Ohms with a capacitave reactance component.
Hi Gary,
[up on my soap box]
The original ACC Repeater controllers had the... best kerchunk
software. I tried for years to nag a few controller mfgrs to
include the original ACC style kerchunk filter option and they
all seem to miss the point and built the classic delayed tx
mess.
Some
Does anyone have any hands on experience with the Aaronia Spectran
hand-held 1MHz to 7GHz 999-Euro spectrum analyzer? Any comments
appreciated.
http://test1.contenttest.net/Spectran6000_Spektrum-Analysator_en.shtml
I was planning on ordering one for site surveys before installing 2.4
or 5.8GHz
If it won't improve the match, why do it?
Joe M.
Robin Midgett wrote:
I've been told one way to lengthen the elements is to put a bolt
through the middle of the bends (top bottom) of each element.
Aluminum bolts would be preferred.
Of course, this does nothing to improve the match, but it
In a message dated 3/27/2007 11:51:33 A.M. Pacific Daylight Time,
[EMAIL PROTECTED] writes:
[up on my soap box]
The original ACC Repeater controllers had the... best kerchunk
software. I tried for years to nag a few controller mfgrs to
include the original ACC style kerchunk filter
If you decide to expand your search for an instrument to include
established brands, there have been three companies in the handheld
spectrum analyzer market that build quality products: Anritsu,
Rohde Schwarz, and Wiltek.
Agilent has also just introduced a handheld unit, but it is
You may find it works OK on 2 meters. Probably not
good enough for a repeater though. There has been
discussions here before about extending the elements
and building new harnesses. The harness is made up of
75 ohm and 35 ohm Vaporlock weather proof coax cut to
multiples of 1/4 wavelength.
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
[EMAIL PROTECTED] On Behalf Of Mike Morris WA6ILQ
Sent: Tuesday, March 27, 2007 1:56 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: 4 bay folded j pole questions
At 06:11 AM
Hi Skipp,
The original ACC Repeater controllers had the... best kerchunk
software. I tried for years to nag a few controller mfgrs to
include the original ACC style kerchunk filter option and they
all seem to miss the point and built the classic delayed tx
mess.
Download the document that
I have modified several of the DB-224 antennas to the 2 meter band by
adding a short stub to lengthen each end of each dipole. I make the
stubs from the tubing salvaged from an old TV antenna, and it is easy
to flatten one end and wrap it around the curved end of the DB-224
dipole. I drill a
On 3/25/07, kb5vjy [EMAIL PROTECTED] wrote:
Greetings,
I have a set of DB-4075's that I am having a problem tuning. One
of the filters won't notch anything at all out so I checked the little
tuning cap on top and found that it was bad. It looked as though it
was shorted out and
Hi All!!
Is there a Command anywhere to warm restart a 6K?
or to say another way To Push the button remotely?
I do not want to cold restart, just warm!
Thanks Brian!
Two 5K's
Two 6K's
One 7K
** AOL now offers free email to everyone.
I removed a cap from a working one and it is a multi layered device
made in the shape of a target. The other end is made the same and
the two sides interlace with out touching. The cavity in
question rings have been fused together and melted into two
chunks. Any help would be GREAT!
73 de
My cable is bad to program the Vertex VX-4000 radio.
Anyone have a cable they could sell me?
thanks John
[EMAIL PROTECTED]
Your cable is bad? Are you using a VPL-1 or something else? If it's a VPL-1
then which half is bad? The PC cable or the radio adapter? Lastly, are
you sure it's the cable? If you are trying to read a VX-4000FIELD radio
with standard VX-4000 software it won't read it, you have to have
Your cable is bad? Are you using a VPL-1 or something else? If it's a VPL-1
then which half is bad? The PC cable or the radio adapter? Lastly, are
you sure it's the cable? If you are trying to read a VX-4000FIELD radio
with standard VX-4000 software it won't read it, you have to have
It is probably a Johanson piston trimmer capacitor like this ebay
item: 7626236572
They are available on the surplus market; try Bob at Surplussales of
Nebraska.
Measure the one you took out on a cap bridge to see what value you
need.
A good friend recently died and I inherited, along with a bunch of
other stuff, his scanner - a PRO-2002.
I want to pass this on to a friend, and would like to find a copy
of the owners manual or instruction manual to include with it.
If anybody has an extra one I'd like to get it, or a xerox or
Mike, Sorry to Hear about the loss of Your Friend , I did find a lot of
Info Here I will try and find More if You need it Hope it Helps
http://support.radioshack.com/support_electronics/18985.htm\
and The site I found the info on lots of Great info
And Mike , here is a guy who will Send The Manual for Free
http://radiocollector0.tripod.com/id58.html
73 De Don KA9QJG
At 10:40 PM 03/27/07, you wrote:
Mike, Sorry to Hear about the loss of Your Friend , I did find a
lot of Info Here I will try and find More if You need it Hope it
Helps ?xml:namespace prefix = o ns =
urn:schemas-microsoft-com:office:office /
At 10:48 PM 03/27/07, you wrote:
And Mike , here is a guy who will Send The Manual for Free
http://radiocollector0.tripod.com/id58.htmlhttp://radiocollector0.tripod.com/id58.html
73 De Don KA9QJG
I sent an email off to him, let's see what happens.
Thank you.
Mike
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