All original cards are in I assume as I have never taken the radio apart.
When I bought it, I successfully programmed the ham band freqs
927.1125/902.1125/tone access, etc. I used it at home as a backyard repeater
mainly just learning how to set the audio, etc.. I put it aside for about a
I will take any advice, no matter what. I will look down in the innards
tomorrow! I remember when a cat decided to take up residence in my wife's car
years ago. It didn't stay long under the hood when she started the car one cold
morning! It kinda limped out of the garage!
Roger W5RDW
-
I just happen to be today building a simple 12 meter 1/4 wave vertical using
this PVC I picked up at Lowes yesterday. I am using the pipe for a sleeve to
insulate the bottom 18 inches of the Aluminum tubing of the vertical from its
mounting pipe.
It says on the PVC pipe I purchased ..Rigid
Looks very similar to the two 70 ft. towers we have at our club station here in
Dallas at the Texas Instruments ARC. Ours has been up since the 1960's, very
sturdy. Ours have tapered bottom sections and a couple of straight sections.
The ends of the sections have the pads as shown in your pics.
Also are fellow hams still using the msf5000 or are they also considering them
too old?
There have been lots of MSF5000 900 MHz repeaters put on the air on 900 MHz for
sure over the last 3-4 years.
Roger W5RDW
Murphy, Texas
Original Message -
From: Stephen Rice
To:
Our 145.43 MHz repeater has been on a self supporting tower 450 ft. high, at
the 250 ft. level ( a Stationmaster at first and a dB224 later) and now at the
350 ft. level (dB224). The tower face at both heights was considerable (well
over 20 to 25 ft. wide). The antenna was offset from the tower
I have never seen your problem in practice, but I know it is possible to have a
bad isolator/circulator that will cause intermod problems. Here is an article
(pretty technical) describing how isolator/circulators can cause intermod
problems.
I ordered a dB224JJ from Hutton Communications a number of years ago. It
sounded like they had not built one in quite awhile, but they did build one for
our club at Texas Instruments. I remember it took a number of months do the
antenna, indicating it was not in stock at the time of the order.
I also have used the freeware Cute PDF Writer for a number of years. We used
it in the 1000's at work. Have it on my home computer now that I am retired.
http://www.cutepdf.com/Products/CutePDF/writer.asp
Roger W5RDW
- Original Message -
From: John J. Riddell
To:
I ran a Mirage C2512G (s/n 30820) for a number of years at a reduced Pout
(around 75 watts out of duplexer) and had no problems. The amp case is mounted
on a very large heat sink for repeater use. Its only glitch was a nearby
lightening strike that vaporized the output cap of the PA. Replaced
I think the long lead is the collector (nearest the M on the body of the
device). I had one of these preamps years ago and best I remember, the input to
the amplifier has one helical resonator, with the other two helical resonators
being on the output.
Roger W5RDW
- Original Message
I found one in excellent condition on eBay for $800, a 900 MHz 75 watt repeater
a few months ago. But I agree with the group, that if it ever needs repair, I
may be in some sort of trouble. I do have the manual, but would like more
detail.
BTW, there are some articles on RB in interfacing the
If you can find a MSF 5000 C85GFB5203AT like the one I have modified to the ham
band, then all you have to do is read a few of the nicely written articles in
the Repeater-Builders website (authored by Bob, WA1MIK) and you will have a
fine repeater (in this case with an external controller a CAT
Over twenty years ago, our repeater receiver, a Spec Comm, finally gave up
the ghost after a year or so. Not knowing any better, I took my trusty old
IC-22A crystal controlled mobile rig, found the proper signals to interface the
receiver portion with the Spec Comm transmitter, and placed it in
I have 2 Hi Pro 220 MHz repeaters, one I bought used (R1) and one new (E). No
problems for many years. One has the Cat 200B controller, the other the 300DX.
I started with a Spec Comm. in 1980 ( I did not know any better!) and over its
first few years of life, the RX went south (repaired once)
I finally finished wiring in the CAT200 controller in my digital MSF5000
tonight. Followed Bob, WA1MIK's directions in the website, the first time I
fired it up after modifying the codeplug for the external controller, it talked
to me! Was I excited. I sounded more like a teenager than the 63
This idea was in a ham magazine years ago, to solve a similar problem. It was
on a very large tower, with a large face. This particular application used
three sets of phased beams (two at each leg, fired tangentially to the tower).
You have to start out with a bunch of gain at each leg, not
Kevin, good post and something I have not thought of.
Roger W5RD
- Original Message -
From: Kevin Custer
To: Repeater-Builder@yahoogroups.com
Sent: Monday, January 01, 2007 9:41 AM
Subject: Re: [Repeater-Builder] Need Help... where can I buy a DSL-Internet
repeater...?
Dex, that is the path length that just came to mind for my use after I read
Kevin's post.
Roger W5RD
- Original Message -
From: Dexter McIntyre W4DEX
To: Repeater-Builder@yahoogroups.com
Sent: Monday, January 01, 2007 10:05 AM
Subject: Re: [Repeater-Builder] Need Help...
I am trying to print a copy of a codeplug for my MSF5000 repeater, but
have not been successful. I keep getting an error on the RSS screen
when I hit the F key to print that says the printer is not ready. I
have it hooked up successfully to the laptop (Sony Vaio 1 GHz) and it
is printing OK on
Thanks guys. You have given me some food for thought.
Have you set-up your printer / print drivers, to print from DOS, instead
of Windows?
I tried to find this but did not find out how to do it.
Although many Motorola RSS programs cannot read from or write to a radio
while in a Windows Command
I wanted to let everyone know that I have successfully tied in my Sony laptop
for the first time to my 900 MHz MSF5000 Digital repeater with the Motorola
software, RIB and cable I recently received. I admit it was a little scary at
first, but after I found the screen that had the repeater
128 MEG RAM actually.
Roger
Original Message -
From: Roger White
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, December 28, 2006 4:47 PM
Subject: [Repeater-Builder] If I can do it, anyone can..!
I wanted to let everyone know that I have successfully tied in my Sony
I know when I passed the 13 wpm in 1961 (remember the old tape code players
with a 800 Hz tone the FCC Offices used, this one in Houston, Texas) at the age
of 17, I was on cloud nine. I was in a room of much older people trying the
test. When I heard them send the 20 wpm test, I thought at that
Many thanks! Very good info. I'll start my search next week.
Roger W5RD
- Original Message -
From: nj902
To: Repeater-Builder@yahoogroups.com
Sent: Friday, November 17, 2006 8:04 PM
Subject: Re: [Repeater-Builder] MSF5000 C85GFB5203AT, Type GFB
--- In
I have bought a MSF5000 of the above type. It is set up for
939.4750/900.4750 MHz TX/Rx, trunking. I want to use it with a CAT
controller. I have not got the manual yet, but will order it soon. It
looks to be in great shape and pegs my 100 watt Bird when I toggle the
transmitter. Is this
This is a long shot, but I have a IFR 1006S with
the 1600 CSA on loan for this weekend. Anybody know of a short version or
likemanual that may be available either on-line or maybe someone has one?
I turned it onand it looks somewhat self explanatory, but I would like to
navigate around it
Not sure of thepost that started this, but I needed a good antenna
mount for my pickup and got tired of drilling holes, etc. into the top of the
cab and knew that lip mount antennas on the hood do not work because of
reflections from the car. I also do not like mag mounts. I took the
Our club bought the R-302 to replace our 20 year old receiver after
lightening took it out. I am not impressed with it, especially if you
compare it to a good old crystal controlled receiver, like a Magiorre. It
has a real touchy squelch and seems to have some sort of a random noise
problems.
I'll add my 2 cents worth on the Alinco DR235 220 MHz. I only had one
Alinco, but its sensitivity was very poor. Was so noisy at 0.5 uV, it was
not until 3-4 uV that it started to reduce the noise. I'll eventually fix
it, whether it is the front end device and/or the VCO.
My Midland 13-509
I finally got the dB224 220 MHz antenna up on
ourtower this past Monday. As you may recall, this tower isself
supporting, 450 ft. tall and our 220 MHz repeater antenna location is at the 250
ft. height, the tower being 25 ft. wide at this location. I made the decision,
based primarily on
Another repeater in the area had a DB224 mounted about 2'
off the side of a smaller tower about 400 ft up with thedipoles
arranged omni with reasonablecoverage. They went out to about 4'
off the side and pointedthe dipoles in towards the tower inline.
Performance dropped drastically,
Monday, I am having this antenna put up on a
triangular tower, whose face is greater than 20 ft. across where the antenna is
going on one leg. I know from years of operationon this tower (or any
tower that is this large), the antenna patternwill have manynulls
around the tower. Does
The existing mount exact size I do not know, but it
is at least 3feet off the leg (and offset to make the antenna vertical,
since the tower (450 ft. self supporting)slopes slightly). I have had a
Sinclair co-linear(6 dB) up at this height a number of years ago and it
seemed to have a
Inexpensive directinal couplers will not have high enough directivity
to give accurate readings. They will work, but the accuracy is
degraded over a high directivity coupler.
Roger
W5RD
--- In Repeater-Builder@yahoogroups.com, Andy [EMAIL PROTECTED]
wrote:
Is there any reason that a
A good discussion on testing using a return loss bridge should be
found wherever the old Hewlett Packard App. Notes are on the web.
A return loss bridge in its simplest application is a dual
directional coupler with detectors (or power meters) on the coupled
ports. The forward port samples
Maybe it's a 2N2369?
Roger W5RD
--- Jim, K8COP [EMAIL PROTECTED] wrote:
This transistor is in a Hamtronics Pre-Selector preamp from the 80's.
The number on the top of the transistor is 2369E44.
Jim, K8COP
Yahoo! Groups Links
* To visit your group on the web, go to:
I am going to put up a Andrews dB224JJ (220 MHz antenna) on our tower
at TI in Dallas. I have had an antenna on this tower up at 250-270 ft.
for many years (a 6dB Stationmaster for 145 MHz and a 6dB Stationmaster
for 224 MHz). Our 2 meter antenna is now a dB224, with the dipoles
situated
Lemmon WB6FLY
Roger White wrote:
I am going to put up a Andrews dB224JJ (220 MHz antenna) on our tower
at TI in Dallas. I have had an antenna on this tower up at 250-270 ft.
for many years (a 6dB Stationmaster for 145 MHz and a 6dB Stationmaster
for 224 MHz). Our 2 meter antenna is now a dB224
(?25
ft.) faced tower
What broadcasters do to get the best pattern on a
large tower is to mount the antenna on the leg coming
straignt off the leg. (perpendicular with the opposite
face)
Paul
--- Roger White [EMAIL PROTECTED] wrote:
Ok, many thanks. I do not have the old catalog
Where is a good place to buy this antenna w/o having to wait for it to
be built?
Roger W5RD
[EMAIL PROTECTED]
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