Hi, I am building a portable repeater for our ARES Club.
I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller.
I am new at this building, and cannot decipher the info
given by the controller instructions.
It advises to use the radio cor connection and here is where I'm
stumped.
It also wants
On Mar 15, 2010, at 11:33 PM, Russell wrote:
Hi, I am building a portable repeater for our ARES Club.
I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller.
I am new at this building, and cannot decipher the info
given by the controller instructions.
It will help if you'll tell us
Russ, you may have to spend more on whatever you're using for power than you're
saving with those radios, as they pull 1.6 amps combined even on standby
receive. Also, develop a plan to keep the transmit radio's heatsink cooled,
even in low power mode. But plunging ahead...
Your controller can
I completely missed that he said he was using a CES RM-10 controller. My bad.
Nate
Hi Paul, thank you very much. We are in our infancy and I had acess to these
new units.
The repeater will be used only for emergencies or sites needing communications.
I have a much better idea where to go for the cor and discriminater now.
I built a to go set up which has locks and I installed 2
The controller is a CES RM-10
I look to the future because,
that is where I will spend the
rest of my life.
From: Nate Duehr n...@natetech.com
To: Repeater-Builder@yahoogroups.com
Sent: Tue, March 16, 2010 3:20:48 AM
Subject: Re: [Repeater-Builder] cor
I'm looking for information about the Standard RPT-20 Repeater.
I would like to know the RPT-20s specifications and get a copy of the manual
and/or service manual.
If anyone has any of this information or a link to it please let me know.
Thanks in advance.
73, Mark, WB9QZB
Ian,
The SM-4450-NE is 488 to 512. If you program 517 you are out of band for
that radio.. The ones I have are the NC 450-470 and two special order NB
420-450 radios. The NB are not available anymore.
I know on the ones I have, when you get more than about 1 MHz out of band
the PLL will unlock
Thanks Nate, we are using radios at hand. we are a new club and are ARES in
this county.
I am building this unit just for call outs. We are using 2 mtr mainly due to
not much activity
on 70 ctmrs. I have built some cu copper 2mtr loops, I cannot believe the
performance
these little loops give
Russ, what is your plan for duplexing? Those radios won't play well a few feet
and 600 kHz apart. - 73, Paul AE4KR
- Original Message -
From: Russell Trippy
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, March 16, 2010 2:18 AM
Subject: Re: [Repeater-Builder] cor
To all Radio Fest Staff, Volunteers, and Attendees:
I just wanted to take a minute to thank all of you who attended the 2010
Palm Beach County Ham Radio Fest. We couldn't have asked for better
weather! Everyone seemed to have a great time and the Tailgate section saw
some brisk sales.
Thanks for the reply.I felt that would be the case but I am still bushed to
explain the two radios I am currently using as a repeater one on 517 and the
other on 507 and their working well as far as I know .I have come across one
or two of these radios that even programming them in band I carn;t
Look around on ebay or on some of the yahoo groups. I have seen midland
commercial radios for as low as $10. I sold a ton for $35 about a year ago.
And most people can program them for you also. They are much easier to get
signals into and out of. Save the 2200 for a mobile as standard ham
Hello All,
I just picked up 3 of these amplifiers last night and would like to shift them
down to ham.
(2) UVC 100-10
(1) UVC 200-80
They are currently on 461 mhz.
I haven't looked inside them yet. Is the tuning similar in design to the TPL
with tuning caps to peak for the input and output
I have for sale a Bird Model 4275 Signal Sampler with adjustable coupling
and with either type N or UHF connectors.
This can be viewed in Birds General Catalog at:
HTTP://www.bird-technologies.com/products/catalogs/1118-BTG-GenCat0010.p
df
Scroll down to Page 27 in the Catalog.
On 3/16/2010 4:37 AM, Ham-Radio wrote:
Ian,
The SM-4450-NE is 488 to 512. If you program 517 you are out of band for
that radio..
In fact, 517 is out of band period. The top of the LMR band is 512, so
if someone is asking you to program 517, they are asking you to do
something illegal.
Hi .I in Australia and over here there are lmr frequencies over 512mhz and
the split is 10meg but if the radio is uncapable of the 517mhz then I will
have to replace them with a radio that can operate on those frequencies
Thank You,
Ian Wells,
Kerinvale Comaudio,
361 Camboon
On 3/16/2010 10:16 AM, kerincom wrote:
Hi .I in Australia and over here there are lmr frequencies over 512mhz and
the split is 10meg but if the radio is uncapable of the 517mhz then I will
have to replace them with a radio that can operate on those frequencies
Oh-woops-for some reason it
Your ok
Thank You,
Ian Wells,
Kerinvale Comaudio,
361 Camboon Road.Biloela.4715
Ph 0749922449 or 0409159932 or 0749922574
www.kerinvalecomaudio.com.au
---Original Message---
From: wd8chl
Date: 3/17/2010 12:57:22 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re:
Hey All,
I am thinking about lightening protection for a site and using 1/2
copper pipe runs rather than a heavy guage wire like 2/0. 1/2 copper
is about $2.20 a ft, while 2/0 is about $3/foot... and 2/0's diameter
is about 0.36 inches so bang for the buck 1/2 copper pipe seems the
way to go. I
Copper strap is better as you get the benefit of both sides of the copper.
73
Gary K4FMX
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
buil...@yahoogroups.com] On Behalf Of Jesse Lloyd
Sent: Tuesday, March 16, 2010 11:42 AM
To:
It will work, you just have to bond each 10' section to the next with something
other than soft solder. Lightning will blow lead solder right out of a joint.
Cadweld would probably be best.
GL, Eric
Eric Lowell
Eastern Maine Electronics Inc.
48 Loon Road
Wesley ME 04686
eme@starband.net
Strap meaning solid copper, not copper or silver tinned braid. However, one
might argue that the copper tubing has an equal amount of surface area and
is more robust than the thin copper strap being sold.. if you fold 3 wide
copper strap into a piece of tubing you get a ¾ OD tube. So, does the
Softdrawn copper tubing comes in spools of 25-50-100ft.
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Eric Lowell
Sent: Tuesday, March 16, 2010 12:10 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Copper pipe
On Tue, 16 Mar 2010, Nate Duehr wrote:
This I want to build a portable repeater question comes up so often,
I wonder if someone has time to turn it into an article for RB...
Give me a minute (I mean a month) and I'll write something on how to do
it right. Oh, but it takes two suitcases...
--
On Tue, 16 Mar 2010, Paul Plack wrote:
Russ, you may have to spend more on whatever you're using for power
than you're saving with those radios, as they pull 1.6 amps combined
even on standby receive. Also, develop a plan to keep the transmit
radio's heatsink cooled, even in low power mode.
Hi All.
I used to use 3 1/8 and 1 5/8 copper transmission line in 20 ft lengths for
ground systems at
broadcast stations. Was very effective. Installed at a 2000ft tower which use
to have a lot of
damage due to lightning. We buried 40 lengths in a circle about 30 ft from the
tower
Hi Folks,
Recently I read a note from a member of this list regarding retuning dipole
elements of a commercial exposed dipole antenna, for 2m. Has anyone
attempted same for subject type antenna?
73,
Dave
Wa3gin
It has been brought up about the issue of solidering the joints. It is better
to install your ground system in a professional manner. Should something happen
and you do take a strike and some one or their equipmet is injured or damaged
then the cost savings are not worth the liability. Just a
Flat copper strap has less inductance (if it is flat and straight) as
far as lightning is concerned. You will need a brazing alloy like this
to join the sections of pipe.
http://weldingsupply.securesites.com/cgi-bin/spider.pl?D620F1||1|700|
This will give you a joint similar to cad welding,
Has anyone built a repeater out of 2 TK-830G's? I have 2 and want to build a
repeater to replace one. These are high spec radios designed for use in
public safety and I feel they'd make a good repeater.
Any help would be greatly appreciated.
Brian
Hi
I assume they are mobiles and as such you will have to watch
the tx pa or it will cook, rx wise no problem.
Dosn't matter if they were made for PS use they were, like
most mobiles only intended for limited tx times..
Steve
- Original Message -
From: briansoehl
3 wide copper strap gives you 6 of surface area. ½ pipe gives you 1.57
surface area.
So even 1 strap provides more surface area than ½ pipe. I think that you
will find it less expensive than pipe and with the added benefit of not
having to splice it every 10 feet.
¾ pipe gives you
Cross posted to rb list.
- Original Message -
From: Don Kupferschmidt
To: rfamplifi...@yahoogroups.com
Sent: Tuesday, March 16, 2010 1:57 PM
Subject: Re: [rfamplifiers] Return Loss Bridge Kit
Jeff Skipp,
There's an EBAY auction right now selling Eagle RF return loss bridges for
Brian,
I agree with Steve, but as a side note if you can run the mobiles at
their lowest rated *power* and use an external PA and fans, it should be
ok. Rated power for example means a 10-25W model run at 10W (since below
that it might induce problems). I have two Motorola GM300 1-10W radios
briansoehl brianso...@... wrote:
Has anyone built a repeater out of 2 TK-830G's? I have 2
and want to build a repeater to replace one. These are
high spec radios designed for use in public safety and
I feel they'd make a good repeater.
Any help would be greatly appreciated.
Brian
The
Some of you will recall that I had problems with Paypal when ordering a
repeater controller.
I sent two E mails to paypal and got no satisfactory reply...just stock
answers
I then called them to find out why they sent an E Check for my purchase instead
of
an instant money transfer.
Again the
Why would you want to?
Surplus Kenwood TKR-820 units are readily available for $300 and less.
I have seen at least 30 sold in last 3 months on eBay. These purposes built
units
have the power supply, interface, BEEFY heat sinks for the TX RF transistors and
sometimes even the UHF duplexer !
I
It's happened to me several times as a seller. They hold the instant payment as
pending Wont release it until you get positive feedback or send them delivery
notification. Their idea of keeping sellers in check. My response to them after
several calls was why when I have 100% satisfaction and
I'll second Greg's observations about the TKR-820. I am using one as the
primary repeater (exciter/driver) for my club's 440 machine in NE Illinois.
It is a 25W station - turned down to about 7W to drive a 150W Crescend PA -
and doesn't even really get warm at that power level. It's been in
From whom did you order the controller??
On 16/03/2010 20:45:17, John J. Riddell (ve3...@earthlink.net) wrote:
Some of you will recall that I had problems with Paypal when ordering a
repeater controller.
I sent two E mails to paypal and got no satisfactory reply...just
stock answers
oops, forgot to mention another small detail. ebay actually owns paypal.
Interesting ?
Nice way for them to also collect interest on your money while they hold it on
top of listing fees getting higher all the time.
--- On Tue, 3/16/10, John J. Riddell ve3...@earthlink.net wrote:
From: John
On 3/16/2010 4:38 PM, skipp025 wrote:
briansoehlbrianso...@... wrote:
Has anyone built a repeater out of 2 TK-830G's? I have 2
and want to build a repeater to replace one. These are
high spec radios designed for use in public safety and
I feel they'd make a good repeater.
Any help would
I'll chime in,
Paypal inadvertently sent a transaction twice withen 4 seconds of each
other. After holding for 30 minutes the asian lady on the phone said there
was nothing she could do as the transaction already went through and I'd
have to contact the seller and ask to refund one of the
First of all Thanks Tony and Steve. The radios are rated at 35W adjustable to
5W I plan to run them at about 20W, and they aren't going to exceed about 30
to 40% duty cycle. So the PAs should be fine.
AS far as a duplexer, it's already installed and tuned in the repeater I'm
replacing.
Greg Beat gregory.b...@... wrote:
Why would you want to?
Surplus Kenwood TKR-820 units are readily available for $300
and less. I have seen at least 30 sold in last 3 months on
eBay. These purposes built units have the power supply,
interface, BEEFY heat sinks for the TX RF
I absolutely would NOT run a x30 at 100W out continuous! Even
with air on it.
Well, to each his own. I wasn't the first one to use mobile
RF Decks in repeater operation.
The high power unit should not be run more then abt 30-40 W,
and the low power unit should not be run at more than
briansoehl brianso...@... wrote:
First of all Thanks Tony and Steve. The radios are rated
at 35W adjustable to 5W I plan to run them at about 20W,
and they aren't going to exceed about 30 to 40% duty cycle.
So the PAs should be fine.
They'd easily be fine at 35 watts, especially at
I have a vhf radio presently on 162mhz made by E.F Johnson.
It is a small unit, but I can't find a combo. It has a
FCC ID ATH90F2427152. The number is very faded and hard
to read.
Can anyone tell me anything about these. Are the useful
for hams and how can they be programmed.
Thanks
Doug VE5DA
EF Johnson Challenger 7152A?
VHF 55W
http://www.repeater-builder.com/johnson/efj-index.html
http://www.ccdx.org/zedyx/mods/challenger.htm
On Tue, Mar 16, 2010 at 3:43 PM, Doug ap...@sasktel.net wrote:
I have a vhf radio presently on 162mhz made by E.F Johnson.
It is a small unit, but I can't
On Tue, 16 Mar 2010, John J. Riddell wrote:
Some of you will recall that I had problems with Paypal when ordering
a repeater controller. I sent two E mails to paypal and got no
satisfactory reply...just stock answers I then called them to find
out why they sent an E Check for my purchase
Jesse,
Not a good idea. Both NFPA 70 (the National Electrical Code) and NFPA 780
(the Lightning Protection Code) have strict requirements for wire sizes and
connection methods. Neither grounding systems nor lightning protection
systems may use a soldered connection in the circuit. Perhaps your
At 06:03 PM 16/03/2010, you wrote:
EF Johnson Challenger 7152A?
VHF 55W
http://www.repeater-builder.com/johnson/efj-index.html
http://www.ccdx.org/zedyx/mods/challenger.htm
On Tue, Mar 16, 2010 at 3:43 PM, Doug ap...@sasktel.net wrote:
I have a vhf radio presently on 162mhz made by E.F
It's because terrorists are Canadian.
--
Kris Kirby, KE4AHR
Disinformation Analyst
Now thats just not funny
__,_._,__
Looks like a 7152 -PC Programmable w/ proper software.
Ed
Com/Rad Inc
- Original Message -
From: Doug
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, March 16, 2010 5:43 PM
Subject: [Repeater-Builder] E.F. JOHNSON radio
I have a vhf radio presently on 162mhz made
Hello hope Everyone is doing well, I have ran into a little Problem and
thought I would get some suggestions on how to resolve it
I have a Motorola Micor 224.40 repeater built By Scott N3XCC , here on the
Repeater builder group; it has worked great for over 3 Yrs.
I have a Few Hams in
I notice you are getting everything but the answer to your question.
Please look at this video and then give Joe an email. If he dosn't have
the answer he probably can get it.
Joes email is kc2...@yahoo.com
Dave N2KTO
On 3/16/2010 1:33 AM, Russell wrote:
Hi, I am building a portable repeater
Sounds like your channel element is running all the time You may need
to force jumper your ptt to ground all the time and reconect your
controllers ptt to the channel element select line so it only runs when
it needs to.
Other than that about the only thing you could do is place an attenuator
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).
http://groups.yahoo.com/group/Repeater-Builder/message/98899;_ylc=X3oDMTJxM
XBnc3YwBF9TAzk3MzU5NzE1BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEbXNnSWQDO
Tg4OTkEc2VjA2Rtc2cEc2xrA3Ztc2cEc3RpbWUDMTI2ODgwMDcyMw-- Re: Copper pipe
rather than 2/0 copper wire
Posted by: Eric Lemmon
I had to clean up a site after someone used ¾ copper pipe for the halo.
Standard sweat solder connections. Shrapnel everywhere. So what is the
electrical properties of ¾ copper pipe after lightning has pierced through
it??? J
Jeff
From: Repeater-Builder@yahoogroups.com
I have been burned by PayPal several times. The real reason they put the
hold on your checks or hold money owed to you has nothing to do with
your ratings and little to do with security. Basically, they control
billions of dollars in transactions ever month through EBay. By holding
the money
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