Charles,
Welcome to the world of 6 Meter repeaters.
They can be a lot of fun. In Missouri you are a little better off frequency and
duplexer wise due to your 1.7 MHz split between transmit and receive
frequencies.
For radios it depends if you are a GE or Motorola person. If you are a GE
Rich,
While there have been a lot of good suggestions thrown at you, you are fighting
an uphill battle without knowing the spec's that were obtained when the
duplexer was re-tuned the last time or finding someone with a tracking
generator or network analyzer to verify the duplexer tuning.
Gary,
I am in Southern Oregon and I understand exactly what you are experiencing. We
have very similar problems down here with our club's repeater. I have often
talked about and even done some serious looking at remodeling a set of
broadcast loops and harness for 2 Meters.
I know there was a
I am looking for some information from those on here that have moved a 450
Mitrek radio to 420. In looking through the archives I saw the recommendation
to order the receive crystal for high side injection.
Any other pitfalls? What transmitter parts need to be changed for reliability
or to
I don't know about your neck of the woods, but one of the local ham groups
picked up a Desktrac already tuned on the ham band to their frequency for $125
with the service manual. It does not have enough of a transmit duty cycle for
their semi-busy ham system so it is sitting on the shelf. First
In answer to your question is it possible to do this on one user frequency, the
best answer that I have right now with the information supplied is maybe.
I can tell you from experience that depending on how much coverage overlap
there is from your three sites, doing this on one user frequency
Larry,
Are you looking for a 4, 8 or 12 channel radio?
Do you need a set of accessories also? Standard or Systems 90?
I will do some looking if you would like. I may know where there is a decent
radio.
Maybe we could do some trading.
Joe - WA7JAW
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.
Hey Guys,
I remember those days and still have both an HT-200 and HT-220 on 2 Meters.
Can anyone tell me what happened to SAROC? When I was active in the 70's it was
SAROC and Fresno that I remember most. Then when I got back into the loop SAROC
was gone and I never heard the story as to why it
Tim,
I am not sure or do not remember what you have for a voter, but I have used the
Doug Hall voters in a COR mode with very good results.
I know there are some pretty good articles on adapting the Motorola Micor
series of voters from tone to COR. This is one of the projects on my to-do
list.
Hi Mike,
No this was not one of Tommy's deals, but the guy had to have been to the Tommy
Rea school of duplexer modification 101.
Good to hear from you.
Joe - WA7JAW
--- In Repeater-Builder@yahoogroups.com, k7...@... wrote:
Hi Joe,
Sounds like a Tommy Rea deal. He used to cut the
Steve,
Based on your request about using your 12 button DTMF mic, I would recommend
the Arcom RC-210. I have a few of the Arcom RC-210's, a couple Link-Com RLC-1's
and a couple of the ICS Linker IIa controllers in our system.
They all work great and the programming is about as different between
Jim,
I would check with Larry K7LJ in Woodland, WA. I know he has several cabinets
up for grabs. He usually hangs around here in the forum and posts from time to
time. I am not sure if he has a Mastr III cabinet or not but he is not too
awful far from you and it might be worth checking.
I have
Glenn,
I need 6 of them for a Sinclair duplexer that I have.
Someone cut the rods off when it was originally on a commercial frequency. The
rods in my duplexer are so short that it will not tune below 147 MHz before
they disappear inside the top of the cavity.
I can get some dimensions for you
Barry,
The method that I use to accomplish this, is to build Macros that only
require 12 button pads to execute them. You can string several functions
together within a Macro that can then be executed with a single multi-digit
command. I normally use a 4 digit command structure for calling the
Lang b...@... wrote:
What diameter are the rods? The older Sinclair VHF Hi cans used 5/16in
diameter whereas the newer cans used 1/4 in daiameter.
burkleoj wrote:
Glenn, I need 6 of them for a Sinclair duplexer that I have.
Someone cut the rods off when it was originally on a commercial
In short, YES it did everything that we were needing it to do. After being
around them for years in commercial service, I was finally able to afford one
for amateur use.
I highly recommend the Doug Hall voters, they just plain work.
It may make your life a little nicer if the first time around
Kevin,
The last Doug Hall 4RV voter shelf I bought off of ebay came with a 4 ch radio
card and a 4 ch line card. I paid $250 for it a couple years ago. It was a
brand new spare that was never put in service.
Hope this helps.
Joe - WA7JAW
--- In Repeater-Builder@yahoogroups.com, Gmail -
Tom,
We have several of these 225 watt units in operation 440 MHz.
The correct PA is the 20 watt unit. It looks identical to the 75 watt chassis,
just has fewer circuit boards on the inside. Yes it is overkill for this much
heatsink for 20 watts output power, but one needs to remember that
I would look for some of the newer radios like the SM50/SM120 series or even
newer CDM series of radios from Motorola. The early pc programmed Motorola
radios (Spectra, Maxtrac, Radius 100..etc)draw a LOT of standby current and are
not the best option for a solar site. The radios need to be
I would look for some of the 12 VHF pass cans. You want the true pass cavities
that have two connectors. Motorola, GE, DB Products and possibly others made
them. They show up surplus every so often and for a 600 KHz close spaced 2
Meter repeater they really shine.
From past experience with a
John,
If you run across any 406 - 420 MHz Micors or Mitreks I could use one or two of
each.
Thanks,
Joe
--- In Repeater-Builder@yahoogroups.com, La Rue Communications
laruec...@... wrote:
Mike -
Thanks for that snippet. Thats the reference I was referring to when I
determined it was non
Doug,
Not to take anything from the SCALA antennas, because they can make some pretty
impressive antennas, but as indicated, the ultra heavy duty antennas are very
spendy. They also make normal antennas that are not designed for extreme
conditions.
Having said that for 440 MHz I really like
I would look at these Telelwave antennas. We have had very good luck with them
on some pretty nasty sites here in Oregon.
http://www.telewave.com/pdf/TWDS-7045.pdf
175 MPH wind rating and 150 MPH wind rating with a 1/2 of ice loading.
As Fred mentioned Kathrein Scala makes a pretty stout
I was thinking it should be 39 Watts. The 4 Watt HT added to the 35 Watt rating
of the Duplexer.
--- In Repeater-Builder@yahoogroups.com, Joel Liburd v44...@... wrote:
No, and no.
Your repeater would be putting out about 65 - 85 % of your 4 watts, based on
the type of duplexer setup.
of there without a service manual and another
test set of known calibration.
I'd suspect the caps getting weak in a negative voltage generator,
look for a ICL-7660 or MAX1044. Or I'd try replacing the audio
amplifier.
On Thu, May 20, 2010 at 11:25 PM, burkleoj joeburk...@... wrote:
My
My IFR 1600S is giving me a couple problems.
One is it appears to have some high frequency noise in the received audio, but
the generated signal and audio looks and sounds clean. I am thinking maybe some
caps in the power supply might be causing this problem.
I have the three inch thick
Eric,
I don't think they are landfill material yet. I think you will find that there
is many of them still in service.
I know in one of the sites here locally in Southern Oregon, my Micor ham
repeater is surrounded by 5 MSR2000 VHF repeaters still in commercial service.
You have to remember
Paul,
Here is my two cents worth.
I am not sure what you are using for your other equipment in your system, but
we use Micor repeaters and have a combination of Motorola Maxtrac, GE MVS, and
Johnson Challenger link radios. We always enable PL encode and decode with
reverse burst on the
Eric,
I do not think that will work.
The crystals are cut different due to the design differences in the elements.
The Mitrek/MSR2000 channel elements are a critter all their own. Some folks
have had some good success re-crystaling their own elements and some have not.
Good Luck.
Joe - WA7JAW
I am pretty sure I came across the torque specification for the PA transistor
mounting screws in Motorola documentation somewhere, but I can not find it now.
The manuals I looked in just say to tighten securely and that leaves a lot of
room for error.
Am I all wet here or does anyone else
Lot,
The specification sheet for this duplexer shows 70 db of isolation. That may
not quite be enough.
I have a Q2330E which Sinclair claims 85 db of isolation. I was able to
carefully tune the duplexer to obtain 91 db of isolation at 147.280/147.880.
With a 75 Watt Micor repeater station and
Larry,
Your message came through blank.
Might want to try again.
Your 6 can Wacom or one of those other ones you just picked up would work much
better for him if you still have one available.
Joe
Lots of good ideas and explanations out there on this issue.
I have never heard of any complaints of this problem on our Micor repeaters
with users having commercial or decent amateur equipment.
What I do is use both the factory encoder and decoder and modify the station
for AND squelch. I
James,
It would be helpful to know if you are planning using cavities and or filtering
to help provide the needed isolation.
Also knowing what the receiver will be and what the preamp is if any will all
play into what is needed to get any real world numbers to determine the
required isolation.
Dennis,
I have had problems with both the MT1000 and HT600 software on some laptops.
I had to use the DOS MODE command to hard set the serial port to 9600,8,N,1
parameters to make one Dell laptop work and I never could make a couple other
laptops work no matter what I tried.
I have used both
Don,
I will let Scott or Kevin confirm this but I think you are correct in that
often times the transmit channel element is strapped to oscillate all of the
time. Nothing wrong in doing this and it is not normally a problem unless you
are very close to the repeater (usually within a few feet).
Ben,
If you are considering purchasing the Hamtronics REP-200 repeater, I would
spend my money on a Kenwood TKR750/850 series repeater. They are about the same
price, but the Kenwood is a much better built piece of equipment and has a
decent built-in controller for basic operation.
If you were
--- In Repeater-Builder@yahoogroups.com, skipp025 skipp...@... wrote:
burkleoj joeburkleo@ wrote:
Does anyone have any information or a manual on a Repco
TC-10V Voter?
Thanks,
Joe - WA7JAW
I'd love to see a couple of pictures of that voter if
you can make them available. Repco in theory
Larry,
I could possibly use that to replace the one we lost in the fire last year. I
need something with 3 ports for the ham stuff and will handle our 225 watt
Micor and a couple more 75 watt repeaters. Do you know how close spaced the
frequencies can be on the combiner that you have?
See you
Does anyone have any information or a manual on a Repco TC-10V Voter?
Thanks,
Joe - WA7JAW
Jeff, Mike , Duane,
Thanks for all of the information. I have got some good reading for a while.
In answer to Jeff's question, let's keep this simple for step one.
For this first link, I will be using Grainger radios and Grainger 6 channel
Mux's for our own amateur microwave system. Since it
Hello All,
Has anyone connected a repeater controller such as a Arcom RC-210 or a
Link-Comm RLC Series to an EM interface to link two or more sites
together?
I am looking for ideas and any pit falls that you may have had in the setup and
configuration.
Thanks,
Joe - WA7JAW
I take care of several repeaters both commercial and amateur. I would choose a
two antenna system any day over a single antenna using a duplexer. Of the 7 ham
repeaters that I assist with, only 2 use a single antenna and duplexer, and
this is due to tower space limitations.
My favorite way to
Larry,
You know how much I love Motorola and especially the Micor radio series.
But...
I think if I were in your position and it was OK with the site owners, I would
look real seriously at the Mastr III units. Very nice equipment and still
factory supported. These are showing up for under
Eric,
Thanks so much, that is the part number I needed. Got some coming my way from
Motorola Parts. I just did not have enough information or a good enough source
to be able to cross the number over.
I really appreciate your knowledge and willingness to share all of the
information that you
Does anyone have a source for a replacement for the 48-869389 mixer fet in the
UHF Micor and MSR2000 series radios?
Motorola has a couple different part numbers for this device but both appear as
they are NLA.
Thanks,
Joe
Just out of curiosity, have you tried the transmitter direct into a dummy load?
If so are the results the same? One more question, Is the radio programmed for
tone or carrier access?
Joe
--- In Repeater-Builder@yahoogroups.com, Hobie hobie...@... wrote:
I have just set up an MSF5000 125W
Karan,
Joe, WA7JAW here in Southern Oregon.
I have had some experience using two Yaesu mobiles and would do that only as a
last resort. A repeater group in my area had 3 sites that they had used a pair
of Yaesu two meter mobiles and a mobile amplifier for repeaters. They lasted a
few years and
Ted,
Thanks for the offer. I am going to have to pass on the Mostar. I have been
trying to keep as much of the equipment between sites the same as possible. We
are pretty well familiar with the Micor and Mitrek series of radios and I think
we want to stick with those if at all possible.
I may
I am on the lookout for a couple Micor stations and Mitrek mobiles on the
406-420 UHF split.
If anybody has some they are willing to part with, please contact me off list.
Thanks,
Joe - WA7JAW
mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of burkleoj
Sent: Tuesday, November 03, 2009 10:55 PM
To: Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com
Subject: [Repeater-Builder] Rugged 420 Omni
I have a need for a 420/425 MHz 6 db or more gain omni antenna for a hub
I have a need for a 420/425 MHz 6 db or more gain omni antenna for a hub
linking site.
The site is covered in ice and snow for 6-7 months a year and accessible only
by snow cat during those times.
Anyone have anything lying around they would like to sell?
Whats everyone's favorite antenna for
Wayne,
I have had much better luck with Angle Linear preamps than the Mitrek/MSR2000
units.
Chip does offer a Amateur Discount also.
If you absolutely have to have a factory preamp, I will look through my
MSR2000/Mitrek VHF units and see if I have one.
Joe - WA7JAW
--- In
Mike,
My personal preference is Andrew FSJ1-50 1/4 superflex. To save on connectors
you can use silver/teflon PL-259 or the new style silver N connectors that
assemble like a PL-259 with a silver UG-176 reducer on this cable. Just drill a
1/8 hole through the reducer to solder to the copper
John,
You may want to look into Morad Antennas. They make a 10db 2 Meter antenna that
works very well.
From www.morad.com
VHF-146 10dB High performance 2 meter VHF 10dB gain @ 146 MHz #9114
$593.00
I have had a pair of them up on the Oregon Coast for 20 years with top support
and got all his stuff. I know Chris went
over and got a bunch of hardware but If I know Chris he would never take
Motorola manuals unless there was GE manuals.
Mike
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of burkleoj
Mike and Mike,
I have a Motorola twin coffin 30D set of manuals out of Neil's collection.
I will have a look tomorrow and see what I can find out for you as to what is
listed for PL Tones.
Joe - WA7JAW
--- In Repeater-Builder@yahoogroups.com, k7...@... wrote:
Hi Mike,
I would say
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