[Repeater-Builder] Controller order PayPal problems

[Don Kerouac]

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 even a few days (typically 2 to 4 weeks), PayPal makes millions in
free interest on your money (your interest, actually).
 
There is little regulation in the industry and since EBay owns PayPal, they
can pretty much do as they please with your money and you can just lump it.
I'm a capitalist and I hate unnecessary government regulation and any form
of socialism.  However, I don't see any change soon as these guys are cozy
with legislators.
 
Remember, next election, use the "NRA" method of voting.Never Re-elect
Anyone!
 
73, Don K9NR
 




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Database version: 6.14570
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RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

[Yahoo]

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
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer
Sent: Tuesday, March 16, 2010 11:41 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

 






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 2.355” surface area. 

 

The inside area of pipe does not count. RF will not flow on the inside of a
tube/pipe.

 

73

Gary  K4FMX

 

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of David Jordan
Sent: Tuesday, March 16, 2010 12:18 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

 





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
inside surface count?  If not then the strap is the clear winner with double
the surface area.  

 

What a hoot,

Dave

Wa3gin

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer
Sent: Tuesday, March 16, 2010 11:59 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

 

  

Copper strap is better as you get the benefit of both sides of the copper.

73
Gary K4FMX

 

 

[Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire

[Jack Davis]

 
 Re: Copper pipe
rather than 2/0 copper wire 


Posted by: "Eric Lemmon"
 wb6...@verizon.net
 wb6fly 


Tue Mar 16, 2010 5:55 pm (PDT) 




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 best
course of action is to understand the Code requirements, and construct your
system accordingly.

Keep in mind the fact that your insurance underwriter may deny any and all
claims for damages due to lightning, if your system was constructed in a
manner inconsistent with the applicable codes.

73, Eric Lemmon WB6FLY





You don’t need any solder joints with type K or L soft copper.  The material
comes is 60 or 100 foot rolls and you just flatten the ends and drill holes
for mounting bolts and star washers.  ½  inch soft copper is actually 5/8
inch OD and makes a great conductor.  The material comes in size up to 2
inch but that gets pretty expensive.  This pipe is designed to be buried in
the ground so you can be assured it will stand up just fine outdoors.  One
caution is to anchor it down, swinging in the wind will cause it to break
due to repeated flexing.  All the normal bend radius for electrical
conductors should be observed as lightning does not like to make sharp
corners.

 

Jack

K6YC

[Repeater-Builder] Re: Repeater /Crossband Help

[burkleoj]

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).

If you reach inside the Micor cabinet and pull out the transmit channel element 
the source of keying your cross band radio should go away.

The quick fix is more distance (try another 10 feet) or add more shielding 
between the repeater and your cross band mobile if possible.

Joe - WA7JAW



--- In Repeater-Builder@yahoogroups.com, "ka9qjg1"  wrote:
>
> 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 the area   who do not have 220 but the  know and would 
> like to talk to some of their friends who do  ,  So I took My Kenwood TM-631 
> Duel band  found a  Local 2 Meter Simplex that Myself and  a few others have 
> been using for over 20 Yrs .
> I turned the 220 Transmit down as low as I could get it which   is  2 Watts 
> That  goes into a Bird 100Watt  Dummy load .  The 2 Meter side I have set a 
> 10 watts and a 3 In muffing  Fan that runs while Transmitting   It runs nice 
> and Cool , 
> 
> Everyone likes  it and it works fine Except that is has been keying up on the 
> 2 Meter side off and on  sometimes as long as 3 4 Min  Unfortunately I had 
> disabled the TOT And  on this Radio  you can only have a PL On one side  and 
> I need that on the 220 side .
>  
> What I think is going on is that the Micor 220 has a Very small signal on the 
> output always being transmitted. No big deal except for what I "am trying to 
> do and that will random bring up the 2 Meter Transmit. 
> 
> This radio has the 6 In Pigtails coming out to a SO-239  I wrapped them with 
> Foil and Moved the Duel band radio  about  10 ft away from the Repeater  
> which is in a 4 ft Motorola case .  The link is being Id When the Repeater is 
> being used. 
> 
> Any thoughts will be great appreciated, The hams using this really like it 
> that don't have 220 they can now use their 2 Meter Mobile and Ht . 
> 
> Thanks Don 
> 
> KA9QJG
>

Re: [Repeater-Builder] Repeater /Crossband Help

[Thomas Oliver]

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 
in line with your remote base receiver.

I am sure Scott can tell you how to do it the right way.

tom

ka9qjg1 wrote:
> 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 the area   who do not have 220 but the  know and would 
> like to talk to some of their friends who do  ,  So I took My Kenwood TM-631 
> Duel band  found a  Local 2 Meter Simplex that Myself and  a few others have 
> been using for over 20 Yrs .
> I turned the 220 Transmit down as low as I could get it which   is  2 Watts 
> That  goes into a Bird 100Watt  Dummy load .  The 2 Meter side I have set a 
> 10 watts and a 3 In muffing  Fan that runs while Transmitting   It runs nice 
> and Cool , 
>
> Everyone likes  it and it works fine Except that is has been keying up on the 
> 2 Meter side off and on  sometimes as long as 3 4 Min  Unfortunately I had 
> disabled the TOT And  on this Radio  you can only have a PL On one side  and 
> I need that on the 220 side .
>  
> What I think is going on is that the Micor 220 has a Very small signal on the 
> output always being transmitted. No big deal except for what I "am trying to 
> do and that will random bring up the 2 Meter Transmit. 
>
> This radio has the 6 In Pigtails coming out to a SO-239  I wrapped them with 
> Foil and Moved the Duel band radio  about  10 ft away from the Repeater  
> which is in a 4 ft Motorola case .  The link is being Id When the Repeater is 
> being used. 
>
> Any thoughts will be great appreciated, The hams using this really like it 
> that don't have 220 they can now use their 2 Meter Mobile and Ht . 
>
> Thanks Don 
>
> KA9QJG 
>
>
>
>
> 
>
>
>
> Yahoo! Groups Links
>
>
>
>
>   

Re: [Repeater-Builder] cor location in an ic-2200h

[Dave Hubbell]

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 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 a connection at the output of the discriminater
circuit.
I have been a tech over 35 years, this issue is causing my teeth
to fall out, I already lost most of my hair.
I would really appreciate any help you might have.
73==Dan w2rdt

BTW: I know these are not the best units to work with.
Financially right now, it is all we could afford.

[Repeater-Builder] Repeater /Crossband Help

[ka9qjg1]

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 the area   who do not have 220 but the  know and would 
like to talk to some of their friends who do  ,  So I took My Kenwood TM-631 
Duel band  found a  Local 2 Meter Simplex that Myself and  a few others have 
been using for over 20 Yrs .
I turned the 220 Transmit down as low as I could get it which   is  2 Watts 
That  goes into a Bird 100Watt  Dummy load .  The 2 Meter side I have set a 10 
watts and a 3 In muffing  Fan that runs while Transmitting   It runs nice and 
Cool , 

Everyone likes  it and it works fine Except that is has been keying up on the 2 
Meter side off and on  sometimes as long as 3 4 Min  Unfortunately I had 
disabled the TOT And  on this Radio  you can only have a PL On one side  and I 
need that on the 220 side .
 
What I think is going on is that the Micor 220 has a Very small signal on the 
output always being transmitted. No big deal except for what I "am trying to do 
and that will random bring up the 2 Meter Transmit. 

This radio has the 6 In Pigtails coming out to a SO-239  I wrapped them with 
Foil and Moved the Duel band radio  about  10 ft away from the Repeater  which 
is in a 4 ft Motorola case .  The link is being Id When the Repeater is being 
used. 

Any thoughts will be great appreciated, The hams using this really like it that 
don't have 220 they can now use their 2 Meter Mobile and Ht . 

Thanks Don 

KA9QJG 

Re: [Repeater-Builder] E.F. JOHNSON radio

[Com/Rad Inc]

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 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



  

Re: [Repeater-Builder] Controller order , paypal problems

[Rick Szajkowski]

>
> It's because terrorists are Canadian.
>
> --
> Kris Kirby, KE4AHR
> Disinformation Analyst
>  
> Now thats just not funny
>

> __,_._,__
>

Re: [Repeater-Builder] E.F. JOHNSON radio

[Doug]

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  wrote:
> > 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.
---
I think you are right on.. I googled 7152 and found a chap who
was doing the uhf version. The radios look exactly the same. So
I guess most of the pin outs and mic connections will be also.
Now I have to find a schematic and a little info on how do you
program them...

Thanks very much..

73 Doug 

RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

[Eric Lemmon]

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 best
course of action is to understand the Code requirements, and construct your
system accordingly.

Keep in mind the fact that your insurance underwriter may deny any and all
claims for damages due to lightning, if your system was constructed in a
manner inconsistent with the applicable codes.

73, Eric Lemmon WB6FLY
 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Jesse Lloyd
Sent: Tuesday, March 16, 2010 8:42 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

  

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 know skin effect plays a big role in lightening since
its mainly RF, what do you think about the idea?

Cheers,

Jesse

Re: [Repeater-Builder] Controller order , paypal problems

[Kris Kirby]

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 instead of an instant 
> money transfer.   Again the lady read from a "script" and after asking 
> her several times why they handled it this way, she finally told me 
> that they have instituted a new "security" measure. When a 
> purchase looks suspicious to their Computer, it decides to send an E 
> Check which can take 10 - 15 days to clear.   Is there any way to 
> prevent thisno. since no human gets to see this transaction. 
> This might happen in 1 - 2 % of the transactions that they handle.   
> In my case the amount was $185.00 and it came out of my bank account 
> instantly but their computer decided that it might be "suspicious" !   
> So hopefully this information is helpful to anyone using Paypal to 
> make payments. I've used them many times in the past and never had a 
> problem until now.   John VE3AMZ

It's because terrorists are Canadian. 

--
Kris Kirby, KE4AHR
Disinformation Analyst

Re: [Repeater-Builder] E.F. JOHNSON radio

[DCFluX]

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  wrote:
> 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
>
>
>
>
> 
>
>
>
> Yahoo! Groups Links
>
>
>
>

[Repeater-Builder] E.F. JOHNSON radio

[Doug]

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

[Repeater-Builder] Re: building a repeater out of 2 Kenwood TK-830G's

[skipp025]

> "briansoehl"  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 that duty 
cycle but by all means use what you feel comfortable with. 

> AS far as a duplexer, it's already installed and tuned in 
> the repeater I'm replacing.  
> 
> I guess what I'm looking for is any method of connecting the 
> receiver to the transmitter.  The detect signal output (RX 
> acc plug pin 4) is at 400mV/47Kohms, and the Mic input on the 
> transmitter is 5mV/3KHz dev. 600ohm (TX acc plug pin 5).  
> And also is there a way to get an active low out of the 
> receiver when the programmed freq and tone pair is decoded 
> (to use as PTT on the TX).  Hopefully a simple, durable and 
> effective method has been done already.  That way I don't 
> have to reinvent the wheel.

You'd do well to have an external controller but it's not 
required. You could email me direct and I'll provide you with 
some additional connection information. 

> Otherwise I may have to use an external repeater control 
> panel, like a Zetron.
> Brian

Doesn't have to bet that expensive and complicated... 
s. 

> --- In Repeater-Builder@yahoogroups.com, KT9AC  wrote:
> >
> > 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 
> > (M04 models) feeding an external PA and they run cool at 2W for an hour 
> > easily.
> > 
> > Depending also on where you plan to install you will most likely need an 
> > appropriate duplexer or bandpass filters.
> > 
> > Good luck!! Its great to build repeaters from an idea, as long as you 
> > use good engineering practices and don't be cheap on what counts.
> > 
> > Tony
> > 
> > Steve wrote:
> > >
> > > 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"  > > >
> > > To:  > > >
> > > Sent: Tuesday, March 16, 2010 5:23 PM
> > > Subject: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's
> > >
> > > > 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
> > > >
> > > >
> > > >
> > > >
> > > >  - - --
> > > >
> > > >
> > > >
> > > > Yahoo! Groups Links
> > > >
> > > >
> > > >
> > >
> > >
> >
>

[Repeater-Builder] Re: building a repeater out of 2 Kenwood TK-830G's

[skipp025]

> 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 20-25 
> for repeater use...

I'll let you know if and when any of the units I use pretty much 
each day fail... so far so good after many years of regular daily 
high power operation. 

s. 

[Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's

[skipp025]

> "Greg Beat"  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 transistors and
> sometimes even the UHF duplexer !
> I would keep those as mobile radios.
> w9gb 

Straight forward questions... straight forward answers. 

Because the TKR-820 has less power output.  I also don't 
want to pay to heat a bunch of individual linear power supplies 
and much of what I do is off grid. And the antenna 
is a combiner system. 

s. 

[Repeater-Builder] Re: building a repeater out of 2 Kenwood TK-830G's

[briansoehl]

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.  

I guess what I'm looking for is any method of connecting the receiver to the 
transmitter.  The detect signal output (RX acc plug pin 4) is at 400mV/47Kohms, 
and the Mic input on the transmitter is 5mV/3KHz dev. 600ohm (TX acc plug pin 
5).  And also is there a way to get an active low out of the receiver when the 
programmed freq and tone pair is decoded (to use as PTT on the TX).  Hopefully 
a simple, durable and effective method has been done already.  That way I don't 
have to reinvent the wheel.

Otherwise I may have to use an external repeater control panel, like a Zetron.

Brian

--- In Repeater-Builder@yahoogroups.com, KT9AC  wrote:
>
> 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 
> (M04 models) feeding an external PA and they run cool at 2W for an hour 
> easily.
> 
> Depending also on where you plan to install you will most likely need an 
> appropriate duplexer or bandpass filters.
> 
> Good luck!! Its great to build repeaters from an idea, as long as you 
> use good engineering practices and don't be cheap on what counts.
> 
> Tony
> 
> Steve wrote:
> >
> > 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"  > >
> > To:  > >
> > Sent: Tuesday, March 16, 2010 5:23 PM
> > Subject: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's
> >
> > > 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
> > >
> > >
> > >
> > >
> > >  - - --
> > >
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> >
> >
>

Re: [Repeater-Builder] Controller order , paypal problems

[DCFluX]

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 transactions, which
is funny as both were for the same amount and no I did not hit the send
button twice.

Re: [Repeater-Builder] Re: building a repeater out of 2 Kenwood TK-830G's

[wd8chl]

On 3/16/2010 4:38 PM, skipp025 wrote:
>
>> "briansoehl"  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 TK-830 is a very popular "big-knob" Public Safety Radio,
> the current replacement is a the TK-890.  They make killer
> repeater building blocks.
>
> Aside from what you'll read from other group members I would
> tell you there should be no problems running the radio full
> power all the time. If your repeater is a lock to talk box
> (IE using IRLP or Echo Link) with nearly constant duty cycle
> it would be advisable to use a modest blower (not a fan) to
> move air past the transmitter deck (rf package).


I absolutely would NOT run a x30 at 100W out continuous! Even with air 
on it.
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 20-25 for repeater use...

Re: [Repeater-Builder] Controller order , paypal problems

[kevin valentino]

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  wrote:


From: John J. Riddell 
Subject: [Repeater-Builder] Controller order , paypal problems
To: "Repeater-Builder" 
Date: Tuesday, March 16, 2010, 4:45 PM


  




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 lady read from a "script" and after asking her several times why they 
handled 
it this way, she finally told me that they have instituted a new "security" 
measure.
 
 
When a purchase looks suspicious to their Computer, it decides to send an E 
Check
which can take 10 - 15 days to clear.
 
Is there any way to prevent thisno.. ... since no human gets to see this 
transaction.
This might happen in 1 - 2 % of the transactions that they handle.
 
In my case the amount was $185.00 and it came out of my bank account instantly
but their computer decided that it might be "suspicious" !
 
So hopefully this information is helpful to anyone using Paypal to make 
payments.
I've used them many times in the past and never had a problem until now.
 
John VE3AMZ
 
 

Re: [Repeater-Builder] Controller order , paypal problems

[Doug Hutchison]

 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"
 > I then called them to find out why they sent an E Check for my purchase
 > instead of
 > an instant money transfer.
 >
 > Again the lady read from a "script" and after asking her several 
times why
 > they handled
 > it this way, she finally told me that they have instituted a new
 > "security" measure.
 >
 >
 > When a purchase looks suspicious to their Computer, it decides to 
send an
 > E Check
 > which can take 10 - 15 days to clear.
 >
 > Is there any way to prevent thisno. since no human gets to see
 > this transaction.
 > This might happen in 1 - 2 % of the transactions that they handle.
 >
 > In my case the amount was $185.00 and it came out of my bank account
 > instantly
 > but their computer decided that it might be "suspicious" !
 >
 > So hopefully this information is helpful to anyone using Paypal to make
 > payments.
 > I've used them many times in the past and never had a problem until now.
 >
 > John VE3AMZ
 >
 >
 >
 >
 > 
 >
 >
 >
 > %0

RE: [Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's

[Mark]

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 service
for three years now without missing a beat.

 

And yes, we are using external duplexers for this rather than the internal
one.  I think I have photos up on the R-B group site, in the photos section.

 

Mark - N9WYS

 

From: Repeater-Builder@yahoogroups.com  On Behalf Of Greg Beat



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 would keep those as mobile radios.

 

w9gb

Re: [Repeater-Builder] Controller order , paypal problems

[kevin valentino]

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 outstanding feedback. 
Thier answer, Standard procedure. I say in short just deal with it when you 
have to and also PAY PAL CAN BITE ME !  :-)

--- On Tue, 3/16/10, John J. Riddell  wrote:


From: John J. Riddell 
Subject: [Repeater-Builder] Controller order , paypal problems
To: "Repeater-Builder" 
Date: Tuesday, March 16, 2010, 4:45 PM


  




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 lady read from a "script" and after asking her several times why they 
handled 
it this way, she finally told me that they have instituted a new "security" 
measure.
 
 
When a purchase looks suspicious to their Computer, it decides to send an E 
Check
which can take 10 - 15 days to clear.
 
Is there any way to prevent thisno.. ... since no human gets to see this 
transaction.
This might happen in 1 - 2 % of the transactions that they handle.
 
In my case the amount was $185.00 and it came out of my bank account instantly
but their computer decided that it might be "suspicious" !
 
So hopefully this information is helpful to anyone using Paypal to make 
payments.
I've used them many times in the past and never had a problem until now.
 
John VE3AMZ
 
 

[Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's

[Greg Beat]

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 would keep those as mobile radios.

w9gb

[Repeater-Builder] Controller order , paypal problems

[John J. Riddell]

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 lady read from a "script" and after asking her several times why they 
handled 
it this way, she finally told me that they have instituted a new "security" 
measure.


When a purchase looks suspicious to their Computer, it decides to send an E 
Check
which can take 10 - 15 days to clear.

Is there any way to prevent thisno. since no human gets to see this 
transaction.
This might happen in 1 - 2 % of the transactions that they handle.

In my case the amount was $185.00 and it came out of my bank account instantly
but their computer decided that it might be "suspicious" !

So hopefully this information is helpful to anyone using Paypal to make 
payments.
I've used them many times in the past and never had a problem until now.

John VE3AMZ

[Repeater-Builder] Re: building a repeater out of 2 Kenwood TK-830G's

[skipp025]

> "briansoehl"  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 TK-830 is a very popular "big-knob" Public Safety Radio, 
the current replacement is a the TK-890.  They make killer 
repeater building blocks. 

Aside from what you'll read from other group members I would 
tell you there should be no problems running the radio full 
power all the time. If your repeater is a lock to talk box 
(IE using IRLP or Echo Link) with nearly constant duty cycle 
it would be advisable to use a modest blower (not a fan) to 
move air past the transmitter deck (rf package). 

I would be greatly surprised if you were able to kill a TK-830 
in anything but constant on (Tx) operation. The radio has self 
protection in the PA section.  I run a number of 630/690, 730/790 
and 830/890 RF Decks in full-power repeater operation and have 
never lost one even when they were very hot to the touch after 
a lot of constant key-down time. 

You need to pull TOS/COS/TOR/COR from the Receiver and figure 
out how you want to interface the transmit audio back into the 
transmit radio (rear panel jack or the front panel mic connector). 
If you want more information regarding that task... Email me direct 
for some ideas if you need that information.  Unless you want to 
run lock to talk constant transmit, the 830 should work just 
fine. Even in high power, high duty cycle operation you'd be 
hard pressed to hurt an 830 RF Deck with a modest blower pushing 
air past the chassis. 

s. 

Re: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's

[KT9AC]

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 
(M04 models) feeding an external PA and they run cool at 2W for an hour 
easily.

Depending also on where you plan to install you will most likely need an 
appropriate duplexer or bandpass filters.

Good luck!! Its great to build repeaters from an idea, as long as you 
use good engineering practices and don't be cheap on what counts.

Tony

Steve wrote:
>
> 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"  >
> To:  >
> Sent: Tuesday, March 16, 2010 5:23 PM
> Subject: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's
>
> > 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
> >
> >
> >
> >
> >  - - --
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
>
> 






Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

<*> Your email settings:
Individual Email | Traditional

<*> To change settings online go to:
http://groups.yahoo.com/group/Repeater-Builder/join
(Yahoo! ID required)

<*> To change settings via email:
repeater-builder-dig...@yahoogroups.com 
repeater-builder-fullfeatu...@yahoogroups.com

<*> To unsubscribe from this group, send an email to:
repeater-builder-unsubscr...@yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/

[Repeater-Builder] Fw: [rfamplifiers] Return Loss Bridge Kit

[Don Kupferschmidt]

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 
$489.00.  Here's the link:

http://cgi.ebay.com/EAGLE-RLB150X3-RETURN-LOSS-BRIDGE-5MHZ-1300MHZ_W0QQitemZ380211935016QQcmdZViewItemQQptZBI_Analyzers?hash=item588665b728


You know the old saying, "you get what you pay for."  Just wondering how the 
Eagle brand stacks up against the one that Amtronix is selling.

Also, are there other comparable units out there for less money?  Maybe the 
list members will chime in with ideas.

73,

Don, KD9PT




  - Original Message - 
  From: skipp025 
  To: rfamplifi...@yahoogroups.com 
  Sent: Tuesday, March 16, 2010 11:18 AM
  Subject: [rfamplifiers] Return Loss Bridge Kit



  Group Member Jeff posted this at another location and the info 
  is well worth sharing here. 

  Amtronix (a Test Equipment Repair Facility near Buffalo, NY) 
  is offering a kit form Return Loss Bridge. 

  http://www.amtronix.com/rlb.htm 

  ... and you'll notice the source/reference article/web page. 

  http://www.wetterlin.org/sam/Reflection/Bridge_BalunPlusBeads.pdf 

  I think this is a pretty neat idea/kit. 

  cheers, 
  skipp 



  

RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

[Gary Schafer]

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 2.355” surface area. 

 

The inside area of pipe does not count. RF will not flow on the inside of a
tube/pipe.

 

73

Gary  K4FMX

 

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of David Jordan
Sent: Tuesday, March 16, 2010 12:18 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

 






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
inside surface count?  If not then the strap is the clear winner with double
the surface area.  

 

What a hoot,

Dave

Wa3gin

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer
Sent: Tuesday, March 16, 2010 11:59 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

 

  

Copper strap is better as you get the benefit of both sides of the copper.

73
Gary K4FMX

Re: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's

[Steve]

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" 
To: 
Sent: Tuesday, March 16, 2010 5:23 PM
Subject: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's


> 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
>
>
>
>
> 
>
>
>
> Yahoo! Groups Links
>
>
>

[Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's

[briansoehl]

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

Re: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

[Thomas Oliver]

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, the alloy is 
actually stronger than the copper base metal.


And a torch hot enough to melt it. Air /Acytelyne /or oxy /Acytelyne.

If you could figure out how to split the pipe and roll it flat you would 
be better off.


tom
/

David Jordan wrote:



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 rather than 2/0 copper wire

 

 

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
www.satnetmaine.com
207-210-7469

 

 




*From:* Jesse Lloyd 
*To:* Repeater-Builder@yahoogroups.com
*Sent:* Tue, March 16, 2010 11:41:43 AM
*Subject:* [Repeater-Builder] Copper pipe rather than 2/0 copper wire

 


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 know skin effect plays a big role in lightening since
its mainly RF, what do you think about the idea?

Cheers,

Jesse

Y

 

Re: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

[Stanley Stanukinos]

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 thought if using 
copper pipe was an acceptabe way of grounding at a site would you not think 
that the professionals would be doing it as they are always looking to save a 
buck. Also the copper thiefs are going to love you for making it so easy to 
steal and sell since they will not have to remove the insulation from the 
copper to get the best price.

Stan

Sent from my iPhone

On Mar 16, 2010, at 11:18 AM, "David Jordan"  wrote:

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 inside 
surface count?  If not then the strap is the clear winner with double the 
surface area. 

 

What a hoot,

Dave

Wa3gin

 

From: Repeater-Builder@yahoogroups.com 
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer
Sent: Tuesday, March 16, 2010 11:59 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

 

 

Copper strap is better as you get the benefit of both sides of the copper.

73
Gary K4FMX

[Repeater-Builder] Super Station MasterPD-220 -3A 150.5-158.5 mHz

[David Jordan]

 

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 

Re: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

[Ralph S. Turk]

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 base.  Connected 

them together with additional lengths of transmission line.  Problem solved. 

Ralph, W7HSG 
- Original Message - 
From: "Jesse Lloyd"  
To: Repeater-Builder@yahoogroups.com 
Sent: Tuesday, March 16, 2010 9:41:43 AM GMT -07:00 US/Canada Mountain 
Subject: [Repeater-Builder] Copper pipe rather than 2/0 copper wire 

  




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 know skin effect plays a big role in lightening since 
its mainly RF, what do you think about the idea? 

Cheers, 

Jesse 

Re: [Repeater-Builder] cor location in an ic-2200h

[Kris Kirby]

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. But plunging ahead... 

Suitcase repeaters require either power efficient radios, or low-duty 
cycles. Otherwise you're carting out battery boxes bigger than the radio 
box.

>   Your controller can work with either COS ("carrier-operated switch") 
> or derive that signal itself. If you can find COS in the Icom radio, 
> you don't need discriminator audio, and can couple audio from anyplace 
> handy, including the external speaker jack if it won't be accessible 
> to passersby. You will need to lift one side of a capacitor on the 
> controller board to use de-emphasized, non-discriminator audio.   On 
> the other hand, if you can provide the controller discriminator audio, 
> you don't need COS - the controller will make its own. The CES docs 
> actually seem to favor this approach.   The 2200 doesn't provide the 
> needed signals on its accessory connector, but there are leftover pins 
> there you could use to get disciminator audio and COS out of the radio 
> cleanly. Get the owners and service manuals, available through online 
> search.   73, Paul, AE4KR

None of this is going to work if his objective is repeating D-STAR 
information.

--
Kris Kirby, KE4AHR
Disinformation Analyst

Re: [Repeater-Builder] cor location in an ic-2200h

[Kris Kirby]

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...

--
Kris Kirby, KE4AHR
Disinformation Analyst

RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

[David Jordan]

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 rather than 2/0 copper wire

 

  

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
www.satnetmaine.com
207-210-7469 

 

 

  _  

From: Jesse Lloyd 
To: Repeater-Builder@yahoogroups.com
Sent: Tue, March 16, 2010 11:41:43 AM
Subject: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

  

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 know skin effect plays a big role in lightening since
its mainly RF, what do you think about the idea?

Cheers,

Jesse

Y

 

RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

[David Jordan]

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
inside surface count?  If not then the strap is the clear winner with double
the surface area.  

 

What a hoot,

Dave

Wa3gin

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer
Sent: Tuesday, March 16, 2010 11:59 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

 

  

Copper strap is better as you get the benefit of both sides of the copper.

73
Gary K4FMX

Re: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

[Eric Lowell]

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
www.satnetmaine.com
207-210-7469 





From: Jesse Lloyd 
To: Repeater-Builder@yahoogroups.com
Sent: Tue, March 16, 2010 11:41:43 AM
Subject: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

  
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 know skin effect plays a big role in lightening since
its mainly RF, what do you think about the idea?

Cheers,

Jesse

Y


  

RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire

[Gary Schafer]

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: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
> 
> 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 know skin effect plays a big role in lightening since
> its mainly RF, what do you think about the idea?
> 
> Cheers,
> 
> Jesse
> 
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 

[Repeater-Builder] Copper pipe rather than 2/0 copper wire

[Jesse Lloyd]

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 know skin effect plays a big role in lightening since
its mainly RF, what do you think about the idea?

Cheers,

Jesse

Re: [Repeater-Builder] Maxon sm4450ne

[kerincom]

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: [Repeater-Builder] Maxon sm4450ne
 
  
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 looked to me like you were from 
Coloradough...I'll go away now...

>
> 
>
> Thank You,
>
> Ian Wells,
>
> Kerinvale Comaudio,
>
> 361 Camboon Road.Biloela.4715
>
> Ph 0749922449 or 0409159932 or 0749922574
>
> www.kerinvalecomaudio.com.au



 

Re: [Repeater-Builder] Maxon sm4450ne

[wd8chl]

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 looked to me like you were from 
Coloradough...I'll go away now...


>
> 
>
> Thank You,
>
> Ian Wells,
>
> Kerinvale Comaudio,
>
> 361 Camboon Road.Biloela.4715
>
> Ph 0749922449 or 0409159932 or 0749922574
>
> www.kerinvalecomaudio.com.au

Re: [Repeater-Builder] Maxon sm4450ne

[kerincom]

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 Road.Biloela.4715
Ph 0749922449 or 0409159932 or 0749922574
www.kerinvalecomaudio.com.au
 
---Original Message---
 
From: wd8chl
Date: 03/17/10 00:07:05
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Maxon sm4450ne
 
  
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. Maybe it was a typo???
Since the normal repeater split up there is 3 MHz, I suspect it's either 
507 and 510, or more likely 511 and 508.

> _
>
> From: Repeater-Builder@yahoogroups.com
> [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ian Wells
> Sent: Monday, March 15, 2010 11:20 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Maxon sm4450ne
>
>
>
>
>
> Hi guys .I have a sm4450ne and I am having problems with setting it up for
> 507 and 517 mhz .I have set 2 up till now and they are working fine except
> these NE are having problems with the vco lock error 3 .I am wondering if
> anyone can shed some light .I can set it up for rx on 507 but it wont lock
> on transmitt.
>
> Thank You ,Ian Wells
> Kerinvale Comaudio,
> 361 Camboon road, Biloela.4715
> Ph 0749922449 Mb 0409159932
> Hm 0749922574 Fx 0749922767
> www.kerinvalecomaudio.com.au
>
>
> 
>
>
>
>



 

Re: [Repeater-Builder] Maxon sm4450ne

[wd8chl]

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. Maybe it was a typo???
Since the normal repeater split up there is 3 MHz, I suspect it's either 
507 and 510, or more likely 511 and 508.

>_
>
> From: Repeater-Builder@yahoogroups.com
> [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ian Wells
> Sent: Monday, March 15, 2010 11:20 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Maxon sm4450ne
>
>
>
>
>
> Hi guys .I have a sm4450ne and I am having problems with setting it up for
> 507 and 517 mhz .I have set 2 up till now and they are working fine except
> these NE are having problems with the vco lock error 3 .I am wondering if
> anyone can shed some light .I can set it up for rx on 507 but it wont lock
> on transmitt.
>
> Thank You ,Ian Wells
> Kerinvale Comaudio,
> 361 Camboon road, Biloela.4715
> Ph 0749922449 Mb 0409159932
> Hm 0749922574 Fx 0749922767
> www.kerinvalecomaudio.com.au
>
>
>   
>
>
>
>

[Repeater-Builder] Bird 4275 Signal Sampler

[Fred Seamans]

 

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.

 

Price - $80.00 Firm

 

Contact me off net if interested!

 

seaman...@sbcglobal.net

 

Fred W5VAY

 

 

[Repeater-Builder] Vocom UHF Amplifier Tuning Question.

[n2len]

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 swr and freq?

Anyone have a owners/service manual or tuning instruction page they can scan 
for me and send via e-mail?

Thanks,
Regards,
Len
n2...@aol.com

Re: [Repeater-Builder] cor location in an ic-2200h

[Robert Pease]

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 gear 
doesn't do well in repeater service because of sensitivity, selectiviy and 
small heat sinks.

Also as noted by nate. You really want to check out duplexors. These will cost 
the most and are not small unless you are going to run 1 or 2 watts.  

What kind of area do you need to cover.  More than a few miles will require 
either height or power. And the more power you use, the more duplexor you will 
need, and you will still need some height for good recieve.

Fyi we run an 16 watt vhf repeater at 120 feet in sunny flat Florida and the 
best price I could find on a set of duplezors that worked well was $600 for a 
Sinclair 6 pack. Its about as small as it gets at just over  2' tall
1, wide and 9'' deep. And it doesn't like to get moved or bumped alot.

So bottom line is if you are short on cash look for duplexors first, then 
commercial radios.

BtW we run a self contained midland 3400D vhf repeater.  I have seen them 
around for $200 to $300 on the midland group at yahoo

Anyway email me if you want morw info and happy repeating.

Rob. KS4EC


Sent by Good Messaging (www.good.com)


 -Original Message-
From:   Russell Trippy [mailto:w2...@yahoo.com]
Sent:   Tuesday, March 16, 2010 04:24 AM Eastern Standard Time
To: Repeater-Builder@yahoogroups.com
Subject:Re: [Repeater-Builder] cor location in an ic-2200h

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 
To: Repeater-Builder@yahoogroups.com
Sent: Tue, March 16, 2010 3:20:48 AM
Subject: Re: [Repeater-Builder] cor location in an ic-2200h

  

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 which controller it is. 

> It advises to use the radio cor connection and here is where I'm
> stumped.

A COR is any logic signal inside the radio that triggers when either the 
squelch is open, or probably better, whenever CTCSS is detected (if you're 
requiring CTCSS on your repeater). Some controllers take inputs for both as 
separate signals and let you then turn on/off the requirement for CTCSS in the 
controller by choosing which logic input to trigger off of, or my preference, 
logically AND'ing the signals together, meaning both COR/COS and CTCSS must be 
active from the repeater's receiver before the repeater will repeat.

This signal, as in on most Amateur grade gear, is NOT available on any of the 
connectors of the IC-2200H, per the manual at http://www.icomamerica.com -- 
pages 1-5. The only way you'll find it is with a logic probe, oscilloscope, or 
similar and knowledge of the radio's schematic and internal layout, and you'll 
have to "bring it out" from inside the rig. There are MUCH easier options for 
this, including... 

- Use of the commercial Icom rigs. They have appropriate programming software 
and connectors for interfacing them to external hardware.
- Maybe consider talking to the sponsors of this mailing list... 
Repeater-Builder The Company (TM? GRIN...) -- they make much higher quality 
repeaters out of older commercial gear than can be easily cobbled together from 
a couple of Amateur-grade mobiles. They can also discuss duplexer options, see 
below for more on that.

> It also wants a connection at the output of the discriminater
> circuit.

A Discriminator circuit can be found in any FM/PM radio, it's the audio prior 
to being de-emphasized directly off of the circuit that detects it from the RF 
input. 

Most controllers will also work with "regular" audio from a speaker or better, 
some place in the radio that gives a constant audio level. (If you use the 
speaker circuit, someone might walk up and turn down the volume control and 
mess up your carefully set levels that provide correct deviation on your 
repeater transmitter that matches the deviation of the FM signal being 
received.)

Again, need to know which controller you chose for your engineering project, 
and why... 

> I have been a tech over 35 years, this issue is causing my teeth
> to fall out, I already lost most of my hair.

Ahh, don't go that far. It's just a repeater! (GRIN)

> I would really appreciate any help you might have.
> 73==Dan w2rdt
> 
> BTW: I know these are not the best units to work with.
> Financially right now, it is all we could afford.

My bigger concern is, "Why 2 meters?" -- getting a duplexer that can handle a 
standard ham radio 600 KHz RX/TX split small enough to be "portabl

RE: [Repeater-Builder] Maxon sm4450ne

[kerincom]

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 get them
to lock at one end of the band so they must be faulty  
 
Thank You,
Ian Wells,
Kerinvale Comaudio,
361 Camboon Road.Biloela.4715
Ph 0749922449 or 0409159932 or 0749922574
www.kerinvalecomaudio.com.au
 
---Original Message---
 
From: Ham-Radio
Date: 3/16/2010 6:38:12 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Maxon sm4450ne
 
  
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 with error 3.
 
I hope this helps.
 
Charles Miller
 




From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups
com] On Behalf Of Ian Wells
Sent: Monday, March 15, 2010 11:20 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Maxon sm4450ne


Hi guys .I have a sm4450ne and I am having problems with setting it up for
507 and 517 mhz .I have set 2 up till now and they are working fine except
these NE are having problems with the vco lock error 3 .I am wondering if
anyone can shed some light .I can set it up for rx on 507 but it wont lock
on transmitt.
 
Thank You ,Ian Wells
Kerinvale Comaudio,
361 Camboon road, Biloela.4715
Ph 0749922449 Mb 0409159932 
Hm 0749922574 Fx 0749922767
www.kerinvalecomaudio.com.au
 




 

[Repeater-Builder] Palm Beach County Ham Radio Fest

[Marc Lonstein]

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.  Sometimes it was hard to tell if the buyers were running
from table to table or being blown by the wind! J

 

Every inside vendor I talked to did well and enjoyed themselves.  The food
was great, thanks to Jared, The Food Ladies, and Dominos.

 

For those of you who keep count, we had a whopping 450 people in attendance,
had 10 test takers, with most passing, and one went from no (U.S.) call to
extra in one sitting!

 

The Forums were well attended and very interesting to all. The talk in went
really smoothly as the location was really easy to find.  Parking needed to
be a little closer, but there was enough of it for all.

  

All in all it was a great success.

 

I have to say that we couldn't have done this without the unwavering support
of everyone involved.  My hat is off to each and every one of the chair
persons and the volunteers, for without them this never would have come to
be.

 

Who would have thought we could put this together in such a short time.  It
seems like just a few months ago we first started talking about this.oh
wait, It was just a few months ago!

 

Many thanks to all of those involved and all of those who attended, now it's
time to start thinking about next year.

 

With that in mind please go to our web site, www.PalmBeachRadioFest.com
  and click on the link for the survey.
We will enter your name in a drawing for a $25.00 ARRL Gift Certificate for
completing it!  The drawing will be on April 1, 2010, so don't wait!

 

The survey can be done anonymously, but you have to put your call and Email
in the Notes/Comments field to be entered in the drawing (otherwise you
can't win!)  We will use the results of this survey to make next year even
better!  

 

 

If you want to be involved in the planning for next year's event, send me an
Email and let me know what you may be interested in, or, better yet come to
one of our club meetings.  They are held on the third Thursday of the month
at the Royal Palm Beach Fire Station at the corner of Okeechobee Blvd and
Royal Palm Beach Blvd in Royal Palm Beach, talk in is 147.045.

 

Or, go to our club's website at www.PalmsWestRadio.org
  

 

Lastly I want to say a special thanks to my better half, Kathy KI4YFU, for
putting up with my many mood swings as the event drew near!  XO me J!

 

See Y'all Next Year!

 

Robert Pease KS4EC

Chairman, 2010 Palm Beach Ham Radio Fest

President, Palms West Amateur Radio Club

ks...@arrl.net

 

Marc Lonstein 
M.O. Unlimited Inc. 
P.O. Box 5364 
Fort Lauderdale, FL 33310-5364 
Ph: 954-720-9200 
Ph: 561-368-3557 
Fax: 561-368-1885 

<  mailto:m...@mounlimited.com> 

  www.mounlimited.com 

This e-mail transmission contains information intended only for the use of
the recipient(s) named above. Further, it contains information that may be
privileged and confidential. If you are not the intended recipient, you are
hereby notified that any dissemination, distribution, or copying of this
message (including any attachments) is strictly prohibited. If you have
received this e-mail in error, please notify the sender by reply e-mail and
then delete this message from your e-mail system. Thank you for your
compliance. 

 

Re: [Repeater-Builder] cor location in an ic-2200h

[Paul Plack]

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 location in an ic-2200h




  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 out. Everything about this portable repeater is an 
adventure, I have
  hand made just about everything in this system. The cabinet has locks to keep 
wondering
  minds, dual fans, and a set of 100 amp gel cell batteries thrown in for power.
  Will always be with my truck, so I have power there as well.
  Your input is greatly appreciated.

Re: [Repeater-Builder] cor location in an ic-2200h

[Russell Trippy]

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 out. Everything about this portable repeater is an 
adventure, I have
hand made just about everything in this system. The cabinet has locks to keep 
wondering
minds, dual fans, and a set of 100 amp gel cell batteries thrown in for power.
Will always be with my truck, so I have power there as well.
Your input is greatly appreciated.
I will be sure to send back a report on how this works, or if it does not work.
73 russell
w2rdt
 I look to the future because,
that is where I will spend the
rest of my life. 





From: Nate Duehr 
To: Repeater-Builder@yahoogroups.com
Sent: Tue, March 16, 2010 3:20:48 AM
Subject: Re: [Repeater-Builder] cor location in an ic-2200h

  

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 which controller it is. 

> It advises to use the radio cor connection and here is where I'm
> stumped.

A COR is any logic signal inside the radio that triggers when either the 
squelch is open, or probably better, whenever CTCSS is detected (if you're 
requiring CTCSS on your repeater). Some controllers take inputs for both as 
separate signals and let you then turn on/off the requirement for CTCSS in the 
controller by choosing which logic input to trigger off of, or my preference, 
logically AND'ing the signals together, meaning both COR/COS and CTCSS must be 
active from the repeater's receiver before the repeater will repeat.

This signal, as in on most Amateur grade gear, is NOT available on any of the 
connectors of the IC-2200H, per the manual at http://www.icomamerica.com -- 
pages 1-5. The only way you'll find it is with a logic probe, oscilloscope, or 
similar and knowledge of the radio's schematic and internal layout, and you'll 
have to "bring it out" from inside the rig. There are MUCH easier options for 
this, including... 

- Use of the commercial Icom rigs. They have appropriate programming software 
and connectors for interfacing them to external hardware.
- Maybe consider talking to the sponsors of this mailing list... 
Repeater-Builder The Company (TM? GRIN...) -- they make much higher quality 
repeaters out of older commercial gear than can be easily cobbled together from 
a couple of Amateur-grade mobiles. They can also discuss duplexer options, see 
below for more on that.

> It also wants a connection at the output of the discriminater
> circuit.

A Discriminator circuit can be found in any FM/PM radio, it's the audio prior 
to being de-emphasized directly off of the circuit that detects it from the RF 
input. 

Most controllers will also work with "regular" audio from a speaker or better, 
some place in the radio that gives a constant audio level. (If you use the 
speaker circuit, someone might walk up and turn down the volume control and 
mess up your carefully set levels that provide correct deviation on your 
repeater transmitter that matches the deviation of the FM signal being 
received.)

Again, need to know which controller you chose for your engineering project, 
and why... 

> I have been a tech over 35 years, this issue is causing my teeth
> to fall out, I already lost most of my hair.

Ahh, don't go that far. It's just a repeater! (GRIN)

> I would really appreciate any help you might have.
> 73==Dan w2rdt
> 
> BTW: I know these are not the best units to work with.
> Financially right now, it is all we could afford.

My bigger concern is, "Why 2 meters?" -- getting a duplexer that can handle a 
standard ham radio 600 KHz RX/TX split small enough to be "portable" is a pain, 
unless you're going to run a VERY low power level. You might have to look into 
doing a very non-standard and much wider split. This is why most people 
building "portable" repeaters are doing it up at UHF where the standard split 
is 5 MHz...

Also if you haven't been perusing the Antenna, Duplexer, and other areas of 
www.repeater- builder.com -- definitely check those out. 

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... 

--
Nate Duehr, WY0X
n...@natetech. com





  

RE: [Repeater-Builder] Maxon sm4450ne

[Ham-Radio]

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 with error 3.
 
I hope this helps.
 
Charles Miller
 


  _  

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ian Wells
Sent: Monday, March 15, 2010 11:20 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Maxon sm4450ne





Hi guys .I have a sm4450ne and I am having problems with setting it up for
507 and 517 mhz .I have set 2 up till now and they are working fine except
these NE are having problems with the vco lock error 3 .I am wondering if
anyone can shed some light .I can set it up for rx on 507 but it wont lock
on transmitt.
 
Thank You ,Ian Wells
Kerinvale Comaudio,
361 Camboon road, Biloela.4715
Ph 0749922449 Mb 0409159932 
Hm 0749922574 Fx 0749922767
www.kerinvalecomaudio.com.au  
 





<>

[Repeater-Builder] Standard RPT-20 Repeater Info Needed

[Mark Thompson]

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 



  

Re: [Repeater-Builder] cor location in an ic-2200h

[Russell Trippy]

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 
To: Repeater-Builder@yahoogroups.com
Sent: Tue, March 16, 2010 3:20:48 AM
Subject: Re: [Repeater-Builder] cor location in an ic-2200h

  

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 which controller it is. 

> It advises to use the radio cor connection and here is where I'm
> stumped.

A COR is any logic signal inside the radio that triggers when either the 
squelch is open, or probably better, whenever CTCSS is detected (if you're 
requiring CTCSS on your repeater). Some controllers take inputs for both as 
separate signals and let you then turn on/off the requirement for CTCSS in the 
controller by choosing which logic input to trigger off of, or my preference, 
logically AND'ing the signals together, meaning both COR/COS and CTCSS must be 
active from the repeater's receiver before the repeater will repeat.

This signal, as in on most Amateur grade gear, is NOT available on any of the 
connectors of the IC-2200H, per the manual at http://www.icomamerica.com -- 
pages 1-5. The only way you'll find it is with a logic probe, oscilloscope, or 
similar and knowledge of the radio's schematic and internal layout, and you'll 
have to "bring it out" from inside the rig. There are MUCH easier options for 
this, including... 

- Use of the commercial Icom rigs. They have appropriate programming software 
and connectors for interfacing them to external hardware.
- Maybe consider talking to the sponsors of this mailing list... 
Repeater-Builder The Company (TM? GRIN...) -- they make much higher quality 
repeaters out of older commercial gear than can be easily cobbled together from 
a couple of Amateur-grade mobiles. They can also discuss duplexer options, see 
below for more on that.

> It also wants a connection at the output of the discriminater
> circuit.

A Discriminator circuit can be found in any FM/PM radio, it's the audio prior 
to being de-emphasized directly off of the circuit that detects it from the RF 
input. 

Most controllers will also work with "regular" audio from a speaker or better, 
some place in the radio that gives a constant audio level. (If you use the 
speaker circuit, someone might walk up and turn down the volume control and 
mess up your carefully set levels that provide correct deviation on your 
repeater transmitter that matches the deviation of the FM signal being 
received.)

Again, need to know which controller you chose for your engineering project, 
and why... 

> I have been a tech over 35 years, this issue is causing my teeth
> to fall out, I already lost most of my hair.

Ahh, don't go that far. It's just a repeater! (GRIN)

> I would really appreciate any help you might have.
> 73==Dan w2rdt
> 
> BTW: I know these are not the best units to work with.
> Financially right now, it is all we could afford.

My bigger concern is, "Why 2 meters?" -- getting a duplexer that can handle a 
standard ham radio 600 KHz RX/TX split small enough to be "portable" is a pain, 
unless you're going to run a VERY low power level. You might have to look into 
doing a very non-standard and much wider split. This is why most people 
building "portable" repeaters are doing it up at UHF where the standard split 
is 5 MHz...

Also if you haven't been perusing the Antenna, Duplexer, and other areas of 
www.repeater- builder.com -- definitely check those out. 

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... 

--
Nate Duehr, WY0X
n...@natetech. com





  

Re: [Repeater-Builder] cor location in an ic-2200h

[Russell Trippy]

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 fans just inches from 
the radios.
I really appreciate the help.
73
russell w2rdt
 I look to the future because,
that is where I will spend the
rest of my life. 





From: Paul Plack 
To: Repeater-Builder@yahoogroups.com
Sent: Tue, March 16, 2010 3:42:03 AM
Subject: Re: [Repeater-Builder] cor location in an ic-2200h

  
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 work with either COS ("carrier-operated switch") or derive 
that signal itself. If you can find COS in the Icom radio, you don't need 
discriminator audio, and can couple audio from anyplace handy, including the 
external speaker jack if it won't be accessible to passersby. You will need to 
lift one side of a capacitor on the controller board to use de-emphasized, 
non-discriminator audio.
 
On the other hand, if you can provide the controller discriminator audio, you 
don't need COS - the controller will make its own. The CES docs actually seem 
to favor this approach.
 
The 2200 doesn't provide the needed signals on its accessory connector, but 
there are leftover pins there you could use to get disciminator audio and COS 
out of the radio cleanly. Get the owners and service manuals, available through 
online search.
 
73,
Paul, AE4KR
 
 
- Original Message - 
>From: Russell 
>To: Repeater-Builder@ yahoogroups. com 
>Sent: Monday, March 15, 2010 11:33 PM
>Subject: [Repeater-Builder] cor location in an ic-2200h
>
>  
>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 a connection at the output of the discriminater
>circuit.
>I have been a tech over 35 years, this issue is causing my teeth
>to fall out, I already lost most of my hair.
>I would really appreciate any help you might have.
>73==Dan w2rdt
>
>BTW: I know these are not the best units to work with.
>Financially right now, it is all we could afford.
>
>



  

Re: [Repeater-Builder] cor location in an ic-2200h

[Nate Duehr]

I completely missed that he said he was using a CES RM-10 controller.  My bad.

Nate

Re: [Repeater-Builder] cor location in an ic-2200h

[Paul Plack]

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 work with either COS ("carrier-operated switch") or derive 
that signal itself. If you can find COS in the Icom radio, you don't need 
discriminator audio, and can couple audio from anyplace handy, including the 
external speaker jack if it won't be accessible to passersby. You will need to 
lift one side of a capacitor on the controller board to use de-emphasized, 
non-discriminator audio.

On the other hand, if you can provide the controller discriminator audio, you 
don't need COS - the controller will make its own. The CES docs actually seem 
to favor this approach.

The 2200 doesn't provide the needed signals on its accessory connector, but 
there are leftover pins there you could use to get disciminator audio and COS 
out of the radio cleanly. Get the owners and service manuals, available through 
online search.

73,
Paul, AE4KR


  - Original Message - 
  From: Russell 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Monday, March 15, 2010 11:33 PM
  Subject: [Repeater-Builder] cor location in an ic-2200h



  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 a connection at the output of the discriminater
  circuit.
  I have been a tech over 35 years, this issue is causing my teeth
  to fall out, I already lost most of my hair.
  I would really appreciate any help you might have.
  73==Dan w2rdt

  BTW: I know these are not the best units to work with.
  Financially right now, it is all we could afford.



  

Re: [Repeater-Builder] cor location in an ic-2200h

[Nate Duehr]

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 which controller it is.  

> It advises to use the radio cor connection and here is where I'm
> stumped.

A COR is any logic signal inside the radio that triggers when either the 
squelch is open, or probably better, whenever CTCSS is detected (if you're 
requiring CTCSS on your repeater).  Some controllers take inputs for both as 
separate signals and let you then turn on/off the requirement for CTCSS in the 
controller by choosing which logic input to trigger off of, or my preference, 
logically AND'ing the signals together, meaning both COR/COS and CTCSS must be 
active from the repeater's receiver before the repeater will repeat.

This signal, as in on most Amateur grade gear, is NOT available on any of the 
connectors of the IC-2200H, per the manual at http://www.icomamerica.com -- 
pages 1-5.  The only way you'll find it is with a logic probe, oscilloscope, or 
similar and knowledge of the radio's schematic and internal layout, and you'll 
have to "bring it out" from inside the rig.  There are MUCH easier options for 
this, including... 

- Use of the commercial Icom rigs.  They have appropriate programming software 
and connectors for interfacing them to external hardware.
- Maybe consider talking to the sponsors of this mailing list... 
Repeater-Builder The Company (TM? GRIN...) -- they make much higher quality 
repeaters out of older commercial gear than can be easily cobbled together from 
a couple of Amateur-grade mobiles.  They can also discuss duplexer options, see 
below for more on that.

> It also wants a connection at the output of the discriminater
> circuit.

A Discriminator circuit can be found in any FM/PM radio, it's the audio prior 
to being de-emphasized directly off of the circuit that detects it from the RF 
input.  

Most controllers will also work with "regular" audio from a speaker or better, 
some place in the radio that gives a constant audio level. (If you use the 
speaker circuit, someone might walk up and turn down the volume control and 
mess up your carefully set levels that provide correct deviation on your 
repeater transmitter that matches the deviation of the FM signal being 
received.)

Again, need to know which controller you chose for your engineering project, 
and why... 

> I have been a tech over 35 years, this issue is causing my teeth
> to fall out, I already lost most of my hair.

Ahh, don't go that far.  It's just a repeater! (GRIN)

> I would really appreciate any help you might have.
> 73==Dan w2rdt
> 
> BTW: I know these are not the best units to work with.
> Financially right now, it is all we could afford.

My bigger concern is, "Why 2 meters?" -- getting a duplexer that can handle a 
standard ham radio 600 KHz RX/TX split small enough to be "portable" is a pain, 
unless you're going to run a VERY low power level.  You might have to look into 
doing a very non-standard and much wider split.  This is why most people 
building "portable" repeaters are doing it up at UHF where the standard split 
is 5 MHz...

Also if you haven't been perusing the Antenna, Duplexer, and other areas of 
www.repeater-builder.com -- definitely check those out.  

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... 

--
Nate Duehr, WY0X
n...@natetech.com