RE: [Repeater-Builder] Re: 6 Meter Repeater

[Charles Rader]

Not there yet. I don't even have a 6 meter rig. I am looking at getting the
Yaesu FT-8900R for my first 6 meter. Any ways, I have built Master II
Repeater, Micor Repeaters, and Lots of Mitrek Repeaters. So I am more
familiar with Motorola than GE but I can handle both. Never built anything
below 2 meter though. If I went with the Mitrek I would use two radios. Due
to the isolation, use one for transmit and one for receive.

My site would be a 60 foot tower on my dad's place in south central
Missouri. He has one of the tallest spots in our county so it is a great
location. So the tower is empty now and I can add sections to make it taller
if I need to. 
 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of burkleoj
Sent: Thursday, September 09, 2010 1:02 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: 6 Meter Repeater

 

  

Charles,
Welcome to the world of 6 Meter repeaters.

They can be a lot of fun. In Missouri you are a little better off frequency
and duplexer wise due to your 1.7 MHz split between transmit and receive
frequencies.

For radios it depends if you are a GE or Motorola person. If you are a GE
person, the Mastr II is the repeater of choice, followed by a Exec II. If
you are a Motorola person, the Micor or MSR2000 are the repeaters of choice,
followed by the Mitrek.

For a duplexer, any good commercial duplexer rated at 1 MHz spacing should
do the trick. Andrew LDF Heliax for feedline, and my favorite antenna is a
pair of DB Products loops, if you have enough tower space. If not a single
loop will work pretty good. I tend to shy away from fiberglass
(Stationmaster style) antennas for use on 6 Meter repeaters.

Your worst enemy will be anything rusty or loose on the tower.

If you are on a busy site near other radios and man made noise, you most
likely will not need nor want to use a preamp on the receiver, but if you
are out in the middle of nowhere on a solar site with a good quiet solar
controller a preamp may be of benefit.

Good Luck with your project.

Joe - WA7JAW

--- In Repeater-Builder@yahoogroups.com
 , "Charles Rader" 
wrote:
>
> I am tossing around the idea of building a 6 meter repeater. This will
have
> to be single site if I do this. What are you guys using for the repeater,
> duplexer, and antenna?
> 
> 
> 
> Thanks,
> 
> Charles KC5DGC
>



<><>

Re: [Repeater-Builder] Re: Possible to purchase IRLP node numbers for AllStar nodes to thus enable IRLP connections on AllStar system?

[Rick Szajkowski]

I have been an IRLP owner for I would say 10 years now .. when the node #'s
were 3 numbers not 4 .. its a great service just like Echo-Link and now
D-Star and others ..  now to get D-Star and IRLP to play :) that would be
fun !

On Thu, Sep 9, 2010 at 10:04 AM, Skip  wrote:

>
>
> > if they want to use IRLP on there Allstar node then build the software to
> > allow it to run with IRLP
> >
> > Just like the Echolink-IRLP guys did ..
> >
> > you cant run both at the same time but saves having more then 1 pc at the
> > repeater site
>
> Which is exactly what they did. Bottom line is if you want an IRLP node
> number you have to BUY an IRLP board.
>
> Don't take the bait the discussion isn't really here, Ken copied
> that email to a bunch of mailing lists for some reason. I have
> no idea where the original discussion is, this is the third list I've
> seen it on this A.M.
>
> 73's Skip WB6YMH
>
>  
>

RE: [Repeater-Builder] Wacom WP-639 Duplexer question

[larryjspamme...@teleport.com]

>From the Repeater-Builder website:

"WACOM and Remec

WACOM started out as Waco Communications in Waco, Texas. At some point WACOM 
was bought by Remec, and in November of 2001 was sold to TX-RX."

 
TX-RX has since been purchased by Bird Technologies Group. I've tried several 
times to contact them about some replacement cables, etc. for some used TX/RX 
VHF Repeater Duplexers, and have received no response except for one reply that 
said something like "I've passed your request for information to our 
engineering group, who will be contacting you with the information you need". I 
never heard nything further, after several months. 

But several weeks ago, we were able to order a brand-new TX/RX 420-MHz 4-cavity 
duplexer from Bird Technologies for a 420-MHz link transceiver, although it 
hasn't arrived yet (it's a "Special Order" item).

Larry



-Original Message- 
From: Steven M Hodell 
Sent: Sep 9, 2010 11:10 AM 
To: Repeater-Builder@yahoogroups.com 
Subject: RE: [Repeater-Builder] Wacom WP-639 Duplexer question 

  





WACOM was bought out my Telewave and there tech support staff is very helpful…

http://telewave.com/

You can cross reference your older Wacom cavities with their new product line 
at these links:

http://www.telewave.com/pricelist/wacom.html

http://www.telewave.com/pricelist/duplexers.html





From: Repeater-Builder@yahoogroups.com 
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of 
larryjspamme...@teleport.com
Sent: Thursday, September 09, 2010 11:04 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Wacom WP-639 Duplexer question

  



WACOM hasn't been in business for some years now. Good luck contacting them 
directly!

-Original Message- 
From: Richard Kelly 
Sent: Sep 8, 2010 9:18 PM 
To: repeater-builder@yahoogroups.com 
Subject: RE: [Repeater-Builder] Wacom WP-639 Duplexer question 

Good evening Eric,

Maybe this is why when the trasmit power is dropped to the 20-50 watt range, 
the receive opens way up like it should. However, according to the spec sheets 
regarding the Wacom SP-639 Duplexer, it is rated for 200 watts. So, again, not 
sure what's going on. We will be trying other things such as adding a second 
ground rod outside the shack instead of the single one we use now. We will also 
try isolating the amp some more and replacing the coax feed line with hard 
line. Thank you very much. We will be contacting Wacom directly tomorrow.

Rich Kelly, W2RRK

[Repeater-Builder] Re: 6 Meter Repeater

[skipp025]

Re: 6 Meter Repeater

> "Charles Rader"  wrote:
> I am tossing around the idea of building a 6 meter repeater. 
> This will have to be single site if I do this. What are you 
> guys using for the repeater, duplexer, and antenna?

In addition to the other radio brands and models listed by 
others, the Midland Syntech Low-Band Mobiles are relatively 
cheap and easy to use as both mobiles and repeaters. 

The Syntech 1 (and 2) mobiles will connect back-to-back for 
a nice repeater and you can cross band two radios for a split 
site. 

There's a Yahoo Group for Midland Radios and the repeater conversion 
information for the Syntech 1 radios is available for download 
from the files section (of that Group) 

Syntech 1 radios reprogram with an Eprom module, which must be 
erased and reprogrammed with the proper equipment. I've been 
offering free Syntech 1 Eprom Module Programming for years, you 
need only pay the US Mail Postage. 

Have a look at this Ebay Auction: 
Ebay Item Number: 260661249410 
Midland 70-052C Syntech 42-50Mhz 80-Ch on 6m Amateur 

This radio is probably ready to go for regular use or adding 
the COR circuit to make it also work as a repeater receiver. 

Prices for used Midland Radios are all over the place... 
watch Ebay and your local Amateur Radio Swaps/Flea Markets. 
I've seen used Midland Syntech 1 Radios sell for anything from 
$5 each up to $99 (as seen in the mentioned Ebay Auction Listing). 
What's a working ready to go (or a relatively easy conversion 
project) 6M Radio worth to you? 

  

Antennas for 6 meters are relatively easy to deal with, I've 
even converted CB Radio Ground Plane Antennas over, but both 
home-brew and surplus commercial are out there if you dig 
around. 

 

You'll find a number of duplexer projects on the web. Keep in 
mind you can start out with vertical split antenna scheme and 
low power to get rolling. You'd be surprised how far 2 to 5 
watts can go...  I ran a split antenna low power 6M Repeater 
using two modified antennas and 45ft separation (600KHz offset). 

It was a lot of great hands on learning... and in theory "no 
one gets hurt in the process". 

cheers, 
s. 

RE: [Repeater-Builder] Wacom WP-639 Duplexer question

[Steven M Hodell]

WACOM was bought out my Telewave and there tech support staff is very helpful…

 

http://telewave.com/

 

You can cross reference your older Wacom cavities with their new product line 
at these links:

 

http://www.telewave.com/pricelist/wacom.html

 

http://www.telewave.com/pricelist/duplexers.html

 

 

 

From: Repeater-Builder@yahoogroups.com 
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of 
larryjspamme...@teleport.com
Sent: Thursday, September 09, 2010 11:04 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Wacom WP-639 Duplexer question

 

  

WACOM hasn't been in business for some years now. Good luck contacting them 
directly!

-Original Message- 
From: Richard Kelly 
Sent: Sep 8, 2010 9:18 PM 
To: repeater-builder@yahoogroups.com 
  
Subject: RE: [Repeater-Builder] Wacom WP-639 Duplexer question 

Good evening Eric,

Maybe this is why when the trasmit power is dropped to the 20-50 watt range, 
the receive opens way up like it should. However, according to the spec sheets 
regarding the Wacom SP-639 Duplexer, it is rated for 200 watts. So, again, not 
sure what's going on. We will be trying other things such as adding a second 
ground rod outside the shack instead of the single one we use now. We will also 
try isolating the amp some more and replacing the coax feed line with hard 
line. Thank you very much. We will be contacting Wacom directly tomorrow.

Rich Kelly, W2RRK

RE: [Repeater-Builder] Wacom WP-639 Duplexer question

[larryjspamme...@teleport.com]

WACOM hasn't been in business for some years now. Good luck contacting them 
directly!


-Original Message- 
From: Richard Kelly 
Sent: Sep 8, 2010 9:18 PM 
To: repeater-builder@yahoogroups.com 
Subject: RE: [Repeater-Builder] Wacom WP-639 Duplexer question 

  



Good evening Eric,
 
Maybe this is why when the trasmit power is dropped to the 20-50 watt range, 
the receive opens way up like it should.  However, according to the spec sheets 
regarding the Wacom SP-639 Duplexer, it is rated for 200 watts.  So, again, not 
sure what's going on.  We will be trying other things such as adding a second 
ground rod outside the shack instead of the single one we use now.  We will 
also try isolating the amp some more and replacing the coax feed line with hard 
line.  Thank you very much.  We will be contacting Wacom directly tomorrow.
 
Rich Kelly, W2RRK

 

[Repeater-Builder] Re: Possible to purchase IRLP node numbers for AllStar nodes to thus enable IRLP connections on AllStar system?

[Skip]

> if they want to use IRLP on there Allstar  node then build the software to
> allow it to run with IRLP
> 
> Just like the Echolink-IRLP  guys did ..
> 
> you cant run both at the same time  but saves having more then 1 pc at the
> repeater site

Which is exactly what they did.  Bottom line is if you want an IRLP node number 
you have to BUY an IRLP board.

Don't take the bait the discussion isn't really here, Ken copied
that email to a bunch of mailing lists for some reason.  I have
no idea where the original discussion is, this is the third list I've
seen it on this A.M. 

73's Skip WB6YMH

Re: [Repeater-Builder] Wacom WP-639 Duplexer question

[Chuck Kelsey]

4 cans will do it. Preamp may or may not be of any use depending on noise 
floor. Your bigger problem is all the noise that a mobile encounters these 
days. Sometimes it's tough to hear the repeater through all the crap that's 
out there.

Chuck
WB2EDV



- Original Message - 
From: "NORM KNAPP" 
To: 
Sent: Thursday, September 09, 2010 3:04 AM
Subject: Re: [Repeater-Builder] Wacom WP-639 Duplexer question


> Oh drat! I thought I was getting away with something :-)
> I am about to start on a 6m mastr ii with 1 meg split. It is a 110 watt 
> cont duty station I am converting to a repeater. I don't think the exciter 
> is a pll, way too many cans on the board and small icom About how much 
> isolation will I need there? I don't know if I have a preamp for this one 
> or not... But if I do, I would try to run it.
> 73
>
> - Original Message -
> From: Repeater-Builder@yahoogroups.com 
> To: Repeater-Builder@yahoogroups.com 
> Sent: Wed Sep 08 23:08:38 2010
> Subject: RE: [Repeater-Builder] Wacom WP-639 Duplexer question
>
>
>
>
> The PLL exciter is why you're having such good success running a 4-cavity
> duplexer. If you had a PM exciter, chances are you'd be experiencing
> desense. The PLL exciter produces about 22 dB less noise at 600 kHz 
> offset,
> reducing the noise supression requirement of the duplexer by a like 
> amount.
>
> See: http://www.repeater-builder.com/pdf/GE_Isolation_Curves.pdf
>
> The OP also mentioned he was using a preamp - that's not helping his
> situation either. Even with a good receiver he's probably on the edge of
> crunching it with only a 4-pack. Personally, I'd never run a preamp with
> nothing but a 4-cavity duplexer on 2m, but if it works for you, God 
> bless...
>
> A Q202G gives more isolation than a WP639 from what I've seen/measured, in
> part because the cavities are larger diameter (I think they're 7" versus
> 5"?).
>
> --- Jeff WN3A
>
>
>> -Original Message-
>> From: Repeater-Builder@yahoogroups.com 
>> 
>> [mailto:Repeater-Builder@yahoogroups.com 
>>  ] On Behalf Of NORM KNAPP
>> Sent: Wednesday, September 08, 2010 11:38 PM
>> To: Repeater-Builder@yahoogroups.com 
>> 
>> Subject: Re: [Repeater-Builder] Wacom WP-639 Duplexer question
>>
>>
>>
>> I got a set of 4 sinclair cans, like a Q202g on a GE mastr II
>> running 100 watts with pll exciter and GE preamp with no
>> desense. Antenna is roughly 300' away fed with LDF7-50A. Is
>> this a miracle or typical?
>>
>> - Original Message - 
>> From: Repeater-Builder@yahoogroups.com 
>> 
>> 
>> > 
>>  >
>> To: Repeater-Builder@yahoogroups.com 
>> 
>> 
>> > 
>>  >
>> Sent: Wed Sep 08 20:10:44 2010
>> Subject: RE: [Repeater-Builder] Wacom WP-639 Duplexer question
>>
>>
>>
>> I'm not surprised- you're asking too much of a duplexer that
>> has four 5"
>> cans. According to my CommShop program, a duplexer with an 80
>> dB spec is
>> more suitable with transmitter power in the 10-15 watt range,
>> assuming a
>> solid-state PA and a receiver sensitivity around 0.35 uV at
>> 12 dB SINAD. On
>> a 100 watt repeater, I'd expect something like a WP-642,
>> which has six 8"
>> cans. BTDT, got the T-shirt and mug...
>>
>> 73, Eric Lemmon WB6FLY
>>
>>
>> -Original Message- 
>> From: Repeater-Builder@yahoogroups.com 
>> 
>> 
>> 
>> [mailto:Repeater-Builder@yahoogroups.com 
>> 
>> 
>>  ] On Behalf Of RichardK
>> Sent: Wednesday, September 08, 2010 3:11 PM
>> To: Repeater-Builder@yahoogroups.com 
>> 
>> 
>> 
>> Subject: [Repeater-Builder] Wacom WP-639 Duplexer question
>>
>> Good evening, our club has a Wacom WP-639 four can duplexer
>> as part of our
>> repeater system. Input Fq is 147.915 and Output Fq is
>> 147.315. We have a
>> 600kHz (+) offset. Very simply, our main problem is when we run the
>> transmitter at full power 100 watts, there is a HUGE desense
>> on the receive
>> side of things. When we drop the transmitter power level to
>> around 20-50
>> watts, the receive side opens WAY up to a large area where
>> people can get
>> into the repeater. As we begin to bring up the transmitter
>> power, "white
>> noise" begins to appear and the receive

[Repeater-Builder] FT100-D

[gabriel]

Hello
Do you know if the programming protocol of the FT100-D is available somewhere ?
Gabe

Re: [Repeater-Builder] Possible to purchase IRLP node numbers for AllStar nodes to thus enable IRLP connections on AllStar system?

[Rick Szajkowski]

whats bs ?

if they want to use IRLP on there Allstar  node then build the software to
allow it to run with IRLP

Just like the Echolink-IRLP  guys did ..

you cant run both at the same time  but saves having more then 1 pc at the
repeater site



On Thu, Sep 9, 2010 at 12:22 AM, Kris Kirby  wrote:

>
>
> On Wed, 8 Sep 2010, Kent Johnson wrote:
> > Bcc to 2010 VoIP Conference List
> >
> > -Original Message- From: David Cameron (IRLP)
> > [mailto:dcame...@irlp.net ] Sent: Wednesday,
> September 08, 2010 7:56 AM
> > To: Kent Johnson Subject: Re: Possible to purchase IRLP node numbers
> > for AllStar
> >
> > Kent, the short answer is no. I have had far too many complaints about
> >
> > people being brought into full duplex telephone calls and non-radio
> >
> > endpoints due to Allstar nodes on IRLP.
> >
> > The philosophy of IRLP is to keep radios on all ends of a link.
> >
> > Dave Cameron
> >
> > VE7LTD
>
> I call BS.
>
> --
> Kris Kirby, KE4AHR
> Disinformation Analyst
>  
>

RE: [Repeater-Builder] Wacom WP-639 Duplexer question

[Leroy A. M. Baptiste]

Hi Scott, can you give me some more information on
circulators, or where can I get such information
and prices.

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On
Behalf Of DCFluX
Sent: Thursday, September 09, 2010 2:03 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Wacom WP-639
Duplexer question

  

An additional 20dB of isolation can be realized by
replacing the
antenna Tee connector with a circulator. Port A to
B tuned to the TX
frequency, Port B to C tuned to the RX frequency.
Connect TX to port
A, antenna to B, Receiver to C.

I'm using a set of WP-639 and with this setup I am
seeing approx 102dB
of rejection from the TX to RX port and 97dB the
other way.

On Wed, Sep 8, 2010 at 8:40 PM, Scott Zimmerman
mailto:n3xcc%40repeater-builder.com> > wrote:
> Rich,
>
> The short answer is: You need to find a bigger
duplexer. Four 8" cans
> would work well such as a Wacom WP-641. You
could simply call and order
> one if Wacom was still in business. (RIP)
Unfortunately Tx/Rx bought
> them years ago for the name and to quash
competition. They can be found
> occasionally for around $600 or so on the used
market.
>
> Other alternatives are as follows:
> 1) You can use two antennas and split the 639
duplexer so that 2 cans
> are in series between the TX and the TX antenna,
and the other two are
> in series between the RX and the RX antenna.
Terry WX3M a list member is
> doing this with VERY good results on one of his
VHF machines. Of course
> this involves the expense of additional feedline
and a second antenna. I
> think you said you had this machine on an 80'
mast. 50' or so of
> vertical isolation coupled with the additional
isolation of splitting
> the duplexer *may* be enough isolation to get
rid of all the desense. TX
> goes on bottom, RX on top.
>
> 2) Buy additional Band Pass / Band Reject (BPBR)
cans. You can add these
> additional cans between the Tx and/or Rx and the
duplexer. These cans
> will give additional isolation. Even if you can
find just Pass or Notch
> cavities, tune them and put them in the correct
place.
>
> With both of the above options, you are looking
to add to the isolation
> between your transmitter and receiver. You'll
find you'll do best by
> adding cans to your transmitter that notch
side-band noise at your
> receiver's frequency. In other words, do what
you can to insure your
> receiver is not hearing your own transmitter's
sideband noise on it's
> input. Pass cans tuned to the TX frequency or
NOTCH cavities tuned to
> your *RX* frequency placed in the transmit line
are your best hope.
>
> Good luck,
> Scott
>
>
>
> Scott Zimmerman
> Amateur Radio Call N3XCC
> 474 Barnett Road
> Boswell, PA 15531
>