--- In Repeater-Builder@yahoogroups.com, Scott Zimmerman
[EMAIL PROTECTED] wrote:
Fellows,
I have been ever so graciously given a mystery radio that was made
into a small portable repeater. This is the kind of thing that you
hook up to a 12v Battery and hook an antenna to it and it's ready
I am looking for a side mount for a DB420 antenna, our club is in the
processing of moving our UHF Repeater and need a side mount for a
Commercial tower I think it is a Rohn 55 but I,m not possitive. Any
help in locating a mount good used or new condition, at a fair price
would be
Bill,
Contact me off line I can point you in a few directions on this one.
Russ, W3CH
([EMAIL PROTECTED])
- Original Message -
From: wa9ba [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, April 08, 2005 8:38 AM
Subject: [Repeater-Builder] Wanted Side mount for a DB
Hi all, I am looking for a transistor that's in a GLB Preselector-
Preamp. This is for the two (2) meter band. Here's the information
(best that I can see) M (batwing) u 901 Thanks in advance
Yahoo! Groups Links
* To visit your group on the web, go to:
Back again. Any suggested on a vendor for a temperature switch to
turn the 12 vdc fans ON and OFF. I used a test setup this morning
with some stud mounted temperature switched and a temperature device.
They make-up at 150 degree F, and opens at 120 degree F. I think this
is allowing the
Harris Made a number of IMTS radio telephones in both
VHF and UHF. The duplex versions were sleeper portable
repeaters, great quality and often sold for near
nothing in the late 80's early-mid 90's.
Everyone bought the UHF Versions for the really cool
internal duplexer (like the Celwave
Just back from IWCE Vegas... cough! cough!
(the cig smoke just kills you...)
Met up with some of my Engineering Friends
at/from Sinclair.
One interesting story was about an attempt to deal
with a 17th order product, which was not resolved.
Sometimes you just can't win...
cheers,
can you do the battery backup mod that is found the repeater builder .com
site for the astron rs35 on the rs 50 or should one order the kit from
astron and mount in externally to the rs50
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Well I just got off the phone with TX-RX and learned a few things.
The setof cavities that I have is rated for four cans, which has an
insertion loss of 1.5 DB, so with the third can, that takes it to 2.2
DB insertion loss, so with my 200 watts in, it would be about 120 out
and that is
At 03:59 PM 4/8/2005 -, you wrote:
Hi all, I am looking for a transistor that's in a GLB Preselector-
Preamp. This is for the two (2) meter band. Here's the information
(best that I can see) M (batwing) u 901 Thanks in advance
---Wow, an oldie but a goodie!
The U901 was one of the
They didn't have the RS 50R built in option?
David wrote:
can you do the battery backup mod that is found the repeater builder .com
site for the astron rs35 on the rs 50 or should one order the kit from
astron and mount in externally to the rs50
Yahoo! Groups Links
no you can buy it build it and hook up external to the rs50 it can be built
into the rm50
but I don't have the rm 50 I have the rs50 and am wondering if I should
spend the $45 for the battery backup kit or if the mod for the rs35 on the
repeater builder website will be acceptable since I do plan
At 12:08 PM 4/8/2005, David wrote:
no you can buy it build it and hook up external to the rs50 it can be built
into the rm50
but I don't have the rm 50 I have the rs50 and am wondering if I should
spend the $45 for the battery backup kit or if the mod for the rs35 on the
repeater builder website
on the repeater builder website there is a mod for the astron rs35 where
you go into it and cut a trace then add a resistor then adjust the power
supply's output voltage to what the float charge rate of the battery I have
done this to an rs35 and have not had any problems I am just wondering if
Maybe it is MRF-901? I have a couple of these and have seen them used
in pre-amps and various other pieces of equipment. It is a little
round thing, maybe 3/16 in dia? with the 4 legs in an X pattern, I
believe 2 are emitter.
On Apr 8, 2005 10:04 AM, Ken Arck [EMAIL PROTECTED] wrote:
At
Yes, that will work just fine. Make sure you put in
fuses, and set the current limit down somewhat if you
are feeding a big battery bank.
Joe
--- David [EMAIL PROTECTED] wrote:
on the repeater builder website there is a mod for
the astron rs35 where
you go into it and cut a trace then
Boy, That was a LONG time ago.
I actually got the information from another kind soul. I hate to admit it,
but it has been sitting under my bench collecting dust ever since. Isn't
that just how it goes, the repeater builder is the last to get his own
repeater projects going
Thanks anyhow.
what wattage 1k pot to parallel r4
- Original Message -
From: Joe Montierth [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, April 08, 2005 1:45 PM
Subject: Re: [Repeater-Builder] astron rs50
Yes, that will work just fine. Make sure you put in
fuses, and set
what do you consider large???
I have 3 25ah gel cells
- Original Message -
From: Joe Montierth [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, April 08, 2005 1:45 PM
Subject: Re: [Repeater-Builder] astron rs50
Yes, that will work just fine. Make sure you put in
Kevin:
As long as the 97/R is linked to 24/R and there is no activity on
the 70/R every thing is fine. Once someone transmits thru the 70/R
is when the problem occurs. The 97/R has to be recv'n a signal from
the 24/R and of course be transmitting for the problem to happen.
If there is
Hey guys,
OK, this should be easy for you.
I'm about to put up a GMRS repeater.
It'll be nothing fancy, it'll just go on the roof of a building.
Any ideas of an antenna?
I think a stationmaster is probably overkill.
Thoughts?
Thanks,
Jed
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I have used the switch shown here on an earlier Mastr II mobile
conversion I did. This switch closes at 110F and opens at 90F. 73, Tony
W4ZT
kc4wgh wrote:
Back again. Any suggested on a vendor for a temperature switch to
turn the 12 vdc fans ON and OFF. I used a test setup this morning
FAN SWITCH...I use Airpax Series 6700. http://www.airpaxtsp.com/tspsite/6700.html.
They are available in a number of temperature settings. Size TO220 package. I
drive a 12 volt relay with mine, then I can control anything with relay
contacts. Not bad price $6.85 each.Part No 67F040 (40 deg
My apoligies, I meant to include the URL:
http://repeater.w4zt.com/uhf/gemastr2
I have used the switch shown here on an earlier Mastr II mobile
conversion I did. This switch closes at 110F and opens at 90F. 73, Tony
W4ZT
kc4wgh wrote:
Back again. Any suggested on a vendor for a temperature
Are you sure it was LDF1 and not FSJ1? LDF1 is VERY rare (I've never
seen it), but FSJ1 is pretty common. LDFx is regular hardline, FSJx is
Superflex.
--
Jim Barbour
WD8CHL
mch wrote:
Sounds like it must have been larger than 1/4.
Joe M.
DCFluX wrote:
I've am using the LDF1-50 on
Ken Arck wrote:
At 03:59 PM 4/8/2005 -, you wrote:
Hi all, I am looking for a transistor that's in a GLB Preselector-
Preamp. This is for the two (2) meter band. Here's the information
(best that I can see) M (batwing) u 901 Thanks in advance
---Wow, an oldie but a goodie!
Yup, Real LDF series with soft foam and everything.
On Apr 8, 2005 12:05 PM, Jim B. [EMAIL PROTECTED] wrote:
Are you sure it was LDF1 and not FSJ1? LDF1 is VERY rare (I've never
seen it), but FSJ1 is pretty common. LDFx is regular hardline, FSJx is
Superflex.
--
Jim Barbour
WD8CHL
500 AH would be large.
--- David [EMAIL PROTECTED] wrote:
what do you consider large???
I have 3 25ah gel cells
- Original Message -
From: Joe Montierth [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, April 08, 2005 1:45 PM
Subject: Re: [Repeater-Builder]
Greetings,
Can a kenwood 760 be programed down to 146 MHz? Has anyone built a 2 meter repeater using these? And if so, does anyone have a hookup? I have
2 avail. and would use to build a backup repeater. any help appreciated
thanks
Mike JohnsonKD4HLH
Yahoo! Groups Links
To
Whatever you got. .25 watt or bigger is OK.
Joe
--- David [EMAIL PROTECTED] wrote:
what wattage 1k pot to parallel r4
- Original Message -
From: Joe Montierth [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, April 08, 2005 1:45 PM
Subject: Re:
DCFluX wrote:
Yup, Real LDF series with soft foam and everything.
Well, AFAIK, the main difference between the two is the corrugation in
the outer jacket. Superflex has a finer corrugation to allow it to bend
easier, and with a tighter radius.
But of course, if it said LDF, then it's
LDF is low-loss..
FSJ is standard..
and Super-Flex is as you describe below.
mike
-Original Message-
From: Jim B. [mailto:[EMAIL PROTECTED]
Sent: Friday, April 08, 2005 4:56 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Andrew Heliax LDF1-50
DCFluX
Thanks, Mike. Interesting thing is that it's joined with a Midian
UED1A encoder/decoder; my guess is it was set up to decode a DTMF
string, then respond back with it's pre-recorded message.
Maybe I could make it live again?
Chuk G.
--- In Repeater-Builder@yahoogroups.com, Mike Morris
Hi All,
Would anyone have a contact to rent site/cabinet space in a site that
allows ham radio systems? I would be looking for a cabinet space on
Heaps, Box Springs, Sunset Ridge, Sierra Pk., or possibly Santiago.
Thanks,
Steve Barden/WA6OXN
Yahoo! Groups Links
* To visit your
Michael C. JohnsonCommunications Unlimited, Inc.101 W. Laurens St. Laurens, SC 29360Voice: 864 984 4633Fax: 864 984 6213E-mail: [EMAIL PROTECTED]
Yahoo! Groups Links
To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/
To unsubscribe from this
At 09:43 AM 4/8/05, you wrote:
can you do the battery backup mod that is found the repeater builder .com
site for the astron rs35 on the rs 50 or should one order the kit from
astron and mount in externally to the rs50
Your statement above is not too clear. I read it as you want a battery
At 02:44 PM 4/8/05, you wrote:
Thanks, Mike. Interesting thing is that it's joined with a Midian
UED1A encoder/decoder; my guess is it was set up to decode a DTMF
string, then respond back with it's pre-recorded message.
The card was basically fed with a binary number and a strobe
pulse and
For the fan application, you can purchase from digikey
http://www.digikey.com/ over the web or landline a CANTHERM bimetal temp
normally open switch which will close when the temp reaches the desired
setpoint. Has spade lugs for connection. Remember to apply a dab of heat
sink grease when
kc4wgh wrote:
Hi all, I am looking for a transistor that's in a GLB Preselector-
Preamp. This is for the two (2) meter band. Here's the information
(best that I can see) M (batwing) u 901 Thanks in advance
That would be a MRF901. RF Parts used to carry them.
Kevin Custer
Yahoo!
Hi all, I am looking for a transistor that's in a GLB Preselector-
Preamp. This is for the two (2) meter band. Here's the information
(best that I can see) M (batwing) u 901 Thanks in advance
That would be a MRF901. RF Parts used to carry them.
Kevin Custer
Here
Jed,
Be careful how you use the term stationmaster, since there are many
different models and variations.
An RFS/Celwave Stationmaster II antenna, model PD201-7, is a good
choice. It has 5.0 dBd omni gain, and costs about $370 from TESSCO.
Another good choice is a Decibel Products DB408B with
Remember to set the Astron voltage to the battery float voltage,
and the float voltage for a sealed lead acid (i.e. gell cell) is
different than that of a wet lead acid and is different than a
nickel-cadmium bank. The Astron actually has to be set to
the float voltage PLUS the voltage drop of
David,
You can avoid the cost and complexity of a battery backup mod by simply
installing a heavy-duty Shottky diode on the output of your power supply, and
raising the voltage setting slightly (about 0.3 VDC) to account for the
forward voltage drop in the diode. Nothing could be simpler!
73,
Try Digi-Key at digikey.com
Rod
Back again. Any suggested on a vendor for a temperature switch to
turn the 12 vdc fans ON and OFF. I used a test setup this morning
with some stud mounted temperature switched and a temperature device.
They make-up at 150 degree F, and opens at 120
I have several installations in service using the same thermal switch. It
is #317-1094-ND from Digi-Key, for $9 each. This switch closes at 122
degrees F, and opens around 100 degrees F. I drilled and tapped two holes
in a flat area of one of the radio's heatsink fins, and mounted the switch
Kevin, maybe you could contact Ed Jackson,
WB2OIF...he worked for Gil Boelke for several years
and may know the answer to this one...
John VE3AMZ
- Original Message -
From:
Kevin Custer
To: Repeater-Builder@yahoogroups.com
Sent: Friday, April 08, 2005 8:42
PM
This is very interesting. I am also in posession of a similar harris
radio. It is the Alpha 2000 UHF Mobile Telephone. I did search a
little on the web but I found very little information on it. When I
acquired this rig someone had already modified it to the Amateur band,
however I would like to
I have a service manual and schematics for the scr500
uhf version. Which version do you have? I also have
the schematics for the vhf scr100 reciever board. I
need to get my scanner working, I'll see if I can get
it going this weekend. If I get it working I'll send
you what you need and upload
Hi Dan,
Join the yahoo group Harris-radio for more info
on these radios/repeaters.
Michael N8RQU
--- Dan KC2BEZ [EMAIL PROTECTED] wrote:
This is very interesting. I am also in posession of
a similar harris
radio. It is the Alpha 2000 UHF Mobile
I prefer the Motorola Micor TPN1105A/TPN1106A Power Supply /
Battery Charger for the repeater site installation.
Everything needed is built in.
Neil - WA6KLA
Dave VanHorn wrote:
Remember to set the Astron voltage to the battery float voltage,
and the float voltage for a
Well, that's certainly a lot more than I knew this morning. I dunno
about the PROM/EEPROM business; I'll take a look at it when I get
into work Monday; just tossed it in a drawer (with the radio it's
attached to.)
Hmm, maybe make it say The White Zone is for loading and unloading
only. If you
I just looked at it, and yeah it is LDF1-50A. The reducers I had were
too small for it, I was debating drilling out the one for RG-8X but
then that would leave none of the reducer.
On Apr 8, 2005 3:01 PM, Roger Grady [EMAIL PROTECTED] wrote:
At 04:21 PM 4/8/05, Mike Perryman wrote:
LDF
Hi, all.
I have a Rohn 45G tower and a Rohn's Universal Sidearm Mount presently
configured with several antennas. I want to rearrange the antennas and
mount the DB-420 for my repeater using the Rohn universal sidearm mount.
I want to use the universal sidearm to bottom and mid-mount the
Remember to set the Astron voltage to the battery float voltage,
and the float voltage for a sealed lead acid (i.e. gell cell) is
different than that of a wet lead acid and is different than a
nickel-cadmium bank. The Astron actually has to be set to
the float voltage PLUS the voltage drop of
I recently acquired a TKR-820. Is it possible to program repeater to
encode on COS? Is there a time out timer adjustment? I saw a note
about time out alarm, but nothing about timer adjustment. Thanks in
advance. David
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