[Repeater-Builder] Re: 50 Watt Repeater

2009-12-11 Thread offtracks1
Thanks mike.

I know its off of the high point some. I will get a better meter on it.

The Kenwood is a very nice repeater its been nice to work with and has super 
audio.

Thanks for the help

Scott KB7DZR

--- In Repeater-Builder@yahoogroups.com,  wrote:
>
> Hi Scott,
> 
>  
> 
> You cant go by that reading. Borrow a good watt meter would be the safe
> thing to do.
> 
>  
> 
>  
> 
>  
> 
>  
> 
> Mike Mullarkey K7PFJ
> 
> 6886 Sage Ave
> 
> Firestone, Co 80504
> 
> 303-954-9695 Home
> 
> 303-954-9693 Home Office & Fax
> 
> 303-718-8052 Cellular
> 
>  
> 
>   _  
> 
> From: Repeater-Builder@yahoogroups.com
> [mailto:repeater-buil...@yahoogroups.com] On Behalf Of offtracks1
> Sent: Friday, December 11, 2009 4:54 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Re: 50 Watt Repeater
> 
>  
> 
>   
> 
> Mike
> 
> Took a look at it today in the software for my TKR-750 K2. I set the high
> power setting in the settings at 200. My watt meter is a poor one to use so
> I really do not trust it when it say 40 watts, Its not a good Bird Meter. Is
> that number good?
> 
> Scott KB7DZR.
> 
> --- In Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
> yahoogroups.com,  wrote:
> >
> > Scott, I would turn it down to 40wt for the VHF model if that is what your
> > looking to do on an Echolink node.
> > 
> > 
> > 
> > 
> > 
> > Mike Mullarkey K7PFJ
> > 
> > 6886 Sage Ave
> > 
> > Firestone, Co 80504
> > 
> > 303-954-9695 Home
> > 
> > 303-954-9693 Home Office & Fax
> > 
> > 303-718-8052 Cellular
> > 
> > 
> > 
> > _ 
> > 
> > From: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
> yahoogroups.com
> > [mailto:Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
> yahoogroups.com] On Behalf Of offtracks1
> > Sent: Friday, December 11, 2009 10:05 AM
> > To: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
> yahoogroups.com
> > Subject: [Repeater-Builder] Re: 50 Watt Repeater
> > 
> > 
> > 
> > 
> > 
> > So running my 750 K2 at 50 watts for an hour or 2 solid when its hooked up
> > to a busy Echonlink system should be ok and I should worry less? I have
> been
> > testing some and it seems to run fine.
> > 
> > KB7DZR Scott
> > 
> > --- In Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
> > yahoogroups.com, Ken Arck  wrote:
> > >
> > > At 08:36 AM 12/11/2009, NORM KNAPP wrote:
> > > >
> > > >
> > > >Agreed, but here we have many '750's running at 50watts and have had 
> > > >no issues. Of course, they are not transmitting 24/7.
> > > 
> > > <As an Authorized Kenwood Dealer, we have "a ton" of TKR's that 
> > > we sold into amateur service, running either 40 (UHF) or 50 (VHF) 
> > > watts with no ill effects. Sure, they're not 24/7 keydown but since 
> > > the redesigned PA, we simply don't see failures. And while we can't 
> > > "officially" recommend it, we've never seen a problem from doing so.
> > > 
> > > Ken
> > > 
> > > 
> > > --
> > > President and CTO - Arcom Communications
> > > Makers of repeater controllers and accessories.
> > > http://www.arcomcon <http://www.arcomcon
> <http://www.arcomcontrollers.com/> trollers.com/> trollers.com/
> > > Authorized Dealers for Kenwood and Telewave and
> > > we offer complete repeater packages!
> > > AH6LE/R - IRLP Node 3000
> > > http://www.irlp. <http://www.irlp. <http://www.irlp.net> net> net
> > > "We don't just make 'em. We use 'em!"
> > >
> > 
> > 
> > 
> > No virus found in this incoming message.
> > Checked by AVG - www.avg.com
> > Version: 8.5.426 / Virus Database: 270.14.103/2558 - Release Date:
> 12/11/09
> > 10:06:00
> >
> 
> 
> 
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.5.426 / Virus Database: 270.14.103/2558 - Release Date: 12/11/09
> 10:06:00
>




[Repeater-Builder] Re: 50 Watt Repeater

2009-12-11 Thread offtracks1
Mike

Took a look at it today in the software for my TKR-750 K2. I set the high power 
setting in the settings at 200. My watt meter is a poor one to use so I really 
do not trust it when it say 40 watts, Its not a good Bird Meter. Is that number 
good?

Scott KB7DZR.

--- In Repeater-Builder@yahoogroups.com,  wrote:
>
> Scott, I would turn it down to 40wt for the VHF model if that is what your
> looking to do on an Echolink node.
> 
>  
> 
>  
> 
> Mike Mullarkey K7PFJ
> 
> 6886 Sage Ave
> 
> Firestone, Co 80504
> 
> 303-954-9695 Home
> 
> 303-954-9693 Home Office & Fax
> 
> 303-718-8052 Cellular
> 
>  
> 
>   _  
> 
> From: Repeater-Builder@yahoogroups.com
> [mailto:repeater-buil...@yahoogroups.com] On Behalf Of offtracks1
> Sent: Friday, December 11, 2009 10:05 AM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Re: 50 Watt Repeater
> 
>  
> 
>   
> 
> So running my 750 K2 at 50 watts for an hour or 2 solid when its hooked up
> to a busy Echonlink system should be ok and I should worry less? I have been
> testing some and it seems to run fine.
> 
> KB7DZR Scott
> 
> --- In Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
> yahoogroups.com, Ken Arck  wrote:
> >
> > At 08:36 AM 12/11/2009, NORM KNAPP wrote:
> > >
> > >
> > >Agreed, but here we have many '750's running at 50watts and have had 
> > >no issues. Of course, they are not transmitting 24/7.
> > 
> > <As an Authorized Kenwood Dealer, we have "a ton" of TKR's that 
> > we sold into amateur service, running either 40 (UHF) or 50 (VHF) 
> > watts with no ill effects. Sure, they're not 24/7 keydown but since 
> > the redesigned PA, we simply don't see failures. And while we can't 
> > "officially" recommend it, we've never seen a problem from doing so.
> > 
> > Ken
> > 
> > 
> > --
> > President and CTO - Arcom Communications
> > Makers of repeater controllers and accessories.
> > http://www.arcomcon <http://www.arcomcontrollers.com/> trollers.com/
> > Authorized Dealers for Kenwood and Telewave and
> > we offer complete repeater packages!
> > AH6LE/R - IRLP Node 3000
> > http://www.irlp. <http://www.irlp.net> net
> > "We don't just make 'em. We use 'em!"
> >
> 
> 
> 
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.5.426 / Virus Database: 270.14.103/2558 - Release Date: 12/11/09
> 10:06:00
>




[Repeater-Builder] Re: 50 Watt Repeater

2009-12-11 Thread offtracks1
Mike

Thanks, That is easy to do with the software I see.

Scott
KB7DZR


--- In Repeater-Builder@yahoogroups.com,  wrote:
>
> Scott, I would turn it down to 40wt for the VHF model if that is what your
> looking to do on an Echolink node.
> 
>  
> 
>  
> 
> Mike Mullarkey K7PFJ
> 
> 6886 Sage Ave
> 
> Firestone, Co 80504
> 
> 303-954-9695 Home
> 
> 303-954-9693 Home Office & Fax
> 
> 303-718-8052 Cellular
> 
>  
> 
>   _  
> 
> From: Repeater-Builder@yahoogroups.com
> [mailto:repeater-buil...@yahoogroups.com] On Behalf Of offtracks1
> Sent: Friday, December 11, 2009 10:05 AM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Re: 50 Watt Repeater
> 
>  
> 
>   
> 
> So running my 750 K2 at 50 watts for an hour or 2 solid when its hooked up
> to a busy Echonlink system should be ok and I should worry less? I have been
> testing some and it seems to run fine.
> 
> KB7DZR Scott
> 
> --- In Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
> yahoogroups.com, Ken Arck  wrote:
> >
> > At 08:36 AM 12/11/2009, NORM KNAPP wrote:
> > >
> > >
> > >Agreed, but here we have many '750's running at 50watts and have had 
> > >no issues. Of course, they are not transmitting 24/7.
> > 
> > <As an Authorized Kenwood Dealer, we have "a ton" of TKR's that 
> > we sold into amateur service, running either 40 (UHF) or 50 (VHF) 
> > watts with no ill effects. Sure, they're not 24/7 keydown but since 
> > the redesigned PA, we simply don't see failures. And while we can't 
> > "officially" recommend it, we've never seen a problem from doing so.
> > 
> > Ken
> > 
> > 
> > --
> > President and CTO - Arcom Communications
> > Makers of repeater controllers and accessories.
> > http://www.arcomcon <http://www.arcomcontrollers.com/> trollers.com/
> > Authorized Dealers for Kenwood and Telewave and
> > we offer complete repeater packages!
> > AH6LE/R - IRLP Node 3000
> > http://www.irlp. <http://www.irlp.net> net
> > "We don't just make 'em. We use 'em!"
> >
> 
> 
> 
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.5.426 / Virus Database: 270.14.103/2558 - Release Date: 12/11/09
> 10:06:00
>




[Repeater-Builder] Re: 50 Watt Repeater

2009-12-11 Thread offtracks1
So running my 750 K2 at 50 watts for an hour or 2 solid when its hooked up to a 
busy Echonlink system should be ok and I should worry less? I have been testing 
some and it seems to run fine.

KB7DZR Scott


--- In Repeater-Builder@yahoogroups.com, Ken Arck  wrote:
>
> At 08:36 AM 12/11/2009, NORM KNAPP wrote:
> >
> >
> >Agreed, but here we have many '750's running at 50watts and have had 
> >no issues. Of course, they are not transmitting 24/7.
> 
>  we sold into amateur service, running either 40 (UHF) or 50 (VHF) 
> watts with no ill effects. Sure, they're not 24/7 keydown but since 
> the redesigned PA, we simply don't see failures. And while we can't 
> "officially" recommend it, we've never seen a problem from  doing so.
> 
> Ken
> 
> 
> --
> President and CTO - Arcom Communications
> Makers of repeater controllers and accessories.
> http://www.arcomcontrollers.com/
> Authorized Dealers for Kenwood and Telewave and
> we offer complete repeater packages!
> AH6LE/R - IRLP Node 3000
> http://www.irlp.net
> "We don't just make 'em. We use 'em!"
>




[Repeater-Builder] Re: Rolling Pipe Sound

2009-12-08 Thread offtracks1
Yep, its still with me that nasty IM. Going to put a band pass filter in front 
of the receiver first as I do not have one at this time.

Thanks for all the help. Just have to wait for parts for now.

Scott KB7DZR

--- In Repeater-Builder@yahoogroups.com, Nate Duehr  wrote:
>
> Nasssty.  Evil IM.  Nice find.
> 
> Nate WY0X
> 
> On Dec 7, 2009, at 8:49 PM, larynl2 wrote:
> 
> > 
> > Do you have two FM stations in your area that are separated by 600 kc.? 
> > That will definitely do exactly what you describe. We had it on our 
> > repeater.
> > 
> > I caught in one of your posts that your transmitter needs to be on for the 
> > problem to appear, so that's intermod causing your interference, not just a 
> > random carrier coming from a router or whatever device.
> > 
> > The problem here was caused by an FM station on 89.9 about a mile away, and 
> > another one on 89.3 roughly six miles away, plus our transmitter on 147.06. 
> > A+B-C=D 147.06 + 89.9 - 89.3 = 147.66. The thing to watch for with FM 
> > broadcast intermod is the wide bandwidth of the intermod product. There was 
> > no interference until BOTH stations were quiet -- no modulation. Obviously, 
> > the instances of both being quiet simultaneously are quite random in length 
> > and occurrence, depending on the program material of each. 
> > 
> > I tracked the location of the mixing with the aid of a spectrum analyzer, 
> > which turned out to be safety cables threaded through the turnbuckles.
> > 
> > Laryn K8TVZ
>




[Repeater-Builder] Re: Rolling Pipe Sound

2009-12-07 Thread offtracks1
Eric

Thanks, I have had great service from Telwave. They were very helpful for 
newbie. 

Thanks for all the tips and ideas everyone. It took me on a yet one more of 
many sniffing runs with my ht and about 10 feet of coax with about 2" of the 
center exposed so I could really sniff close. 

Well I really think (HOPE) I found it maybe. Right spot on the input I can get 
a sound that kind of fits the sound I have been getting. I have my full weather 
station here as many folks use it including the weather service. It updated on 
the web ect. Well its a wired Davis weather station, so all the wires going to 
all the sensors work well as a antenna. 

After some close hunting it will fully open the Ht's squelch right on the 
input. it is coming from the one line I did not have a bead on. Its the main 
data line to the computer system that then records and sends it out to my web 
page. Now with a snap on bead on it I only get it to open up right at the side 
of the snap on bead that is running into the weather station. So I put one on 
each end and that really weakend the signal. It still present but you have be 
right on it.

This just may be it as I have shut down everything but the weather station and 
it was unplugged from the power but it has a 9 volt backup battery in it.

We will see, I have claimed victory too early before with this noise. So the 
next test is wait and see.

By the way the DB224E Antenna is one very nice system its really woke up this 
repeater. I got it installed just about 2 weeks ago and switched off the backup 
antenna the diamond F22, its a good antenna but not for full time repeater 
service compared to the DB224E

Scott KB7DZR

--- In Repeater-Builder@yahoogroups.com, "Eric Lemmon"  wrote:
>
> Scott,
> 
> One source is Telewave.  Here are the datasheets for the 5" and 8" bandpass
> cavity filters:
> 
> 
> 
> With the 30% Amateur discount, the 5" cavity will cost you about $231 plus
> shipping, and the 8" cavity is about $100 more.  Other sources are Comprod,
> EMR, TX-RX, and Andrew.  Some brands may require purchase through a
> distributor, such as Tessco, Hutton, or Talley.  Always ask about a Ham
> discount when you are negotiating prices.  Depending upon the size of your
> order, you may get 25% or 30%.
> 
> 73, Eric Lemmon WB6FLY
>  
> 
> -Original Message-
> From: Repeater-Builder@yahoogroups.com
> [mailto:repeater-buil...@yahoogroups.com] On Behalf Of offtracks1
> Sent: Monday, December 07, 2009 3:56 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Re: Rolling Pipe Sound
> 
>   
> 
> The router is right at 147.580 to almost 147.595. The repeater input is
> 147.600. So I plan to take that offline. All that cables are double shielded
> with no adapters ect. I do not have anything between the isolator and the
> duplexer.
> 
> Where is a good dealer for a 5" or 8" band pass for the receiver?
> 
> I may look at going with that for the first step as it is not very bad but a
> bugger that pops up now and then.
> 
> Thanks for the help.
> 
> Scott 
> 
> --- In Repeater-Builder@yahoogroups.com
> <mailto:Repeater-Builder%40yahoogroups.com> , "Eric Lemmon" 
> wrote:
> >
> > Scott,
> > 
> > A likely suspect is a carrier being emitted by a nearby computer or
> > microprocessor. A few years ago, I was setting up a GR1225 repeater on a
> > VHF channel, and I noticed that the receive indicator LED was lit
> steadily.
> > My spectrum analyzer revealed that there was a low-level but steady
> carrier
> > a few kHz off from my receive frequency. I then used my T-Hunt equipment
> to
> > pinpoint my desktop computer as the source. In the course of my
> > investigation, I also found weak but benign carriers being emitted from my
> > TV set, my idle microwave oven, and my programmable thermostat.
> > 
> > If it is an intermod problem, perhaps a DCI filter is far too wide to be
> of
> > much help. I'd strongly suggest putting a 5" or 8" bandpass cavity ahead
> of
> > the receiver- it is much sharper than the DCI product. Do you have a
> second
> > harmonic notch filter, or a low-pass filter, following the isolator? Are
> > all of the jumper cables double-shielded, with proper connectors on each
> > end- that is, no adapters or barrels?
> > 
> > 73, Eric Lemmon WB6FLY
> > 
> > 
> > -Original Message-
> > From: Repeater-Builder@yahoogroups.com
> <mailto:Repeater-Builder%40yahoogroups.com> 
> > [mailto:Repeater-Builder@yahoogroups.com
> <mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of offtracks1
> > Sent: Monday, December 07, 2009 12:49 PM
> > T

[Repeater-Builder] Re: Rolling Pipe Sound

2009-12-07 Thread offtracks1
The router is right at 147.580 to almost 147.595. The repeater input is 
147.600. So I plan to take that offline. All that cables are double shielded 
with no adapters ect. I do not have anything between the isolator and the 
duplexer.

Where is a good dealer for a 5" or 8" band pass for the receiver?

I may look at going with that for the first step as it is not very bad but a 
bugger that pops up now and then.

Thanks for the help.

Scott 

--- In Repeater-Builder@yahoogroups.com, "Eric Lemmon"  wrote:
>
> Scott,
> 
> A likely suspect is a carrier being emitted by a nearby computer or
> microprocessor.  A few years ago, I was setting up a GR1225 repeater on a
> VHF channel, and I noticed that the receive indicator LED was lit steadily.
> My spectrum analyzer revealed that there was a low-level but steady carrier
> a few kHz off from my receive frequency.  I then used my T-Hunt equipment to
> pinpoint my desktop computer as the source.  In the course of my
> investigation, I also found weak but benign carriers being emitted from my
> TV set, my idle microwave oven, and my programmable thermostat.
> 
> If it is an intermod problem, perhaps a DCI filter is far too wide to be of
> much help.  I'd strongly suggest putting a 5" or 8" bandpass cavity ahead of
> the receiver- it is much sharper than the DCI product.  Do you have a second
> harmonic notch filter, or a low-pass filter, following the isolator?  Are
> all of the jumper cables double-shielded, with proper connectors on each
> end- that is, no adapters or barrels?
> 
> 73, Eric Lemmon WB6FLY
>  
> 
> -Original Message-
> From: Repeater-Builder@yahoogroups.com
> [mailto:repeater-buil...@yahoogroups.com] On Behalf Of offtracks1
> Sent: Monday, December 07, 2009 12:49 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Rolling Pipe Sound
> 
>   
> 
> Thanks for all the post and for the web site and group.
> It's been very helpful to me as I have been setting up my system. 
> 
> My repeater system is a Kenwood TKR-750 K2, Telewave TPRD-1556 duplexer set
> (6 cavities), A Telewave Isolator on the PA. Running 1/2" Heilax to a Andrew
> DB224E antenna. This a repeater at my home as I am on a small hill. The
> antenna is about 40 feet vertical and 60 feet horizontally from the
> repeater/office. 
> 
> It works very well but I have had intermod issue that rears its head now and
> then that sounds like rolling pipe or hollow sound. I am runing a PL on both
> TX and RX. This sound opens up the receiver even. So my tx pl is getting
> back into the system. I have hunted down many noise makers in the office
> that could have been helping out. One was the Linksys router. I am going to
> replace it anyway as it makes a ton of noise I found. Changing my network
> from 100 to 10 on the card speed also reduced the noise levels. 
> 
> Still I get the rolling pipe sound now and then and it leaves as fast as it
> shows up. If I use my other antenna a Diamond F22 also fed with 1/2 Heliax I
> also get the same result. I do use a preamp but it also seems to not change
> with or without it. I have even ran it so the receive antenna is alone and
> the transmit is the other (split). I still get the rolling pipes now and
> then.
> 
> I do have a FM radio station on 92.1 about 4 miles from me that is known to
> have a sloppy signal. Could it be that this is mixing with my system and
> creating this? 
> 
> Looking at getting a DCI Band pass filter on the receiver side but I am not
> sure if that is just throwing more money at this project and not getting
> anywhere still.
> 
> Just wanted to see if anyone had some ideas?
> 
> Scott KB7DZR
>




[Repeater-Builder] Re: Rolling Pipe Sound

2009-12-07 Thread offtracks1
No worries, the more info the better. Echoproducer is the Bees Knees if you are 
running echolink. It is one very impressive and free program. Peter has put a 
lot of work into it.

Scott


--- In Repeater-Builder@yahoogroups.com, Tony KT9AC  wrote:
>
> Scott,
> I also would second the "reverse repeater" theory. Years ago (many) we 
> had a repeater in Western PA on 147.165 that would lock up with a 
> Michigan repeater on 147.765 (both rightfully coordinated) and produce 
> the "pipe" sound. In those days (1980s) everyone ran carrier squelch and 
> we had some Lake Erie ducting once in a while.
> 
> Its up to you, but was just a quick workaround that I started doing. 
> Funny thing is I can get the "growl" when the system ran DPL and 
> conditions are right...but its not the repeater since another temporary 
> system I put in did the same thing.
> 
> Sorry to hijack your note with my issue, but was hoping that there would 
> be some commonality and we would both benefit. Thanks for the 
> information on echoproducer, I might look into that.
> 
> Tony
> 
> offtracks1 wrote:
> >
> > Thanks for the quick reply
> >
> > The revers pair is a good point.
> >
> > I am in a remote area and did the full coordination but still we have 
> > had some odd ducting here as I am close to 9K mountains and I am at 
> > around 4K feet to start with.
> >
> > Tony I have not ran it without the tx pl. I have a few folks that like 
> > that including myself as I drop the tone before the TX, the controller 
> > is a ICS. But still for testing I may do that. I have echolink so I 
> > hook it up at night to the Ireland conference and set the system to 
> > listen only so I do not interfere with folks. Then with a program 
> > called echoproducer I can log each time the system gets kerchunched. 
> > sometimes its fine other times the log is big.
> >
> > Sorry I failed to put down its on 147.000 TX 147.600 RX.
> >
> > I have a repeater info page off of my weather station site.
> >
> > http://www.josephoregonweather.com/repeater.html 
> > <http://www.josephoregonweather.com/repeater.html>
> >
> > --- In Repeater-Builder@yahoogroups.com 
> > <mailto:Repeater-Builder%40yahoogroups.com>, Tony KT9AC  wrote:
> > >
> > > Scott,
> > > You are not alone in this!! I too have been fighting a problem almost
> > > exactly like this - I've tried different PL tones on RX and TX and that
> > > seemed to keep it from "self-oscillating". Seems to happen more when 
> > the
> > > weather is dry and I describe it as a "growl" sound. Happening on a
> > > MSF5000 at a commercial site. We too have numerous broadcast towers
> > > within 2 miles, and lots of Cellular/PCS antennas around. Mine is on
> > > UHF, yours appears to be high-band VHF (from the TKR-750 K2 note).
> > >
> > > I'm still working on a resolution, but again for now try either split
> > > tone or remove PL from the transmitter (CSQ). It would keep the 
> > repeater
> > > keyed up for several seconds, then drop signal and come back again (as
> > > long as the tail remained with PL output). I've also shortened the hang
> > > timer to 3 seconds to help. It wouldn't bring up the system unless
> > > someone kerchunked it, then it started.
> > >
> > > Tony, KT9AC
> > >
> >
> >
>




[Repeater-Builder] Re: Rolling Pipe Sound

2009-12-07 Thread offtracks1
Thanks for the quick reply

The revers pair is a good point.

I am in a remote area and did the full coordination but still we have had some 
odd ducting here as I am close to 9K mountains and I am at around 4K feet to 
start with.

Tony I have not ran it without the tx pl. I have a few folks that like that 
including myself as I drop the tone before the TX, the controller is a ICS. But 
still for testing I may do that. I have echolink so I hook it up at night to 
the Ireland conference and set the system to listen only so I do not interfere 
with folks. Then with a program called echoproducer I can log each time the 
system gets kerchunched. sometimes its fine other times the log is big.

Sorry I failed to put down its on 147.000 TX 147.600 RX.

I have a repeater info page off of my weather station site.

http://www.josephoregonweather.com/repeater.html

--- In Repeater-Builder@yahoogroups.com, Tony KT9AC  wrote:
>
> Scott,
> You are not alone in this!! I too have been fighting a problem almost 
> exactly like this - I've tried different PL tones on RX and TX and that 
> seemed to keep it from "self-oscillating". Seems to happen more when the 
> weather is dry and I describe it as a "growl" sound. Happening on a 
> MSF5000 at a commercial site. We too have numerous broadcast towers 
> within 2 miles, and lots of Cellular/PCS antennas around. Mine is on 
> UHF, yours appears to be high-band VHF (from the TKR-750 K2 note).
> 
> I'm still working on a resolution, but again for now try either split 
> tone or remove PL from the transmitter (CSQ). It would keep the repeater 
> keyed up for several seconds, then drop signal and come back again (as 
> long as the tail remained with PL output). I've also shortened the hang 
> timer to 3 seconds to help. It wouldn't bring up the system unless 
> someone kerchunked it, then it started.
> 
> Tony, KT9AC
> 





[Repeater-Builder] Rolling Pipe Sound

2009-12-07 Thread offtracks1
Thanks for all the post and for the web site and group.
It's been very helpful to me as I have been setting up my system. 

My repeater system is a Kenwood TKR-750 K2, Telwave TPRD-1556 duplexer set (6 
cavities), A Telwave Isolator on the PA. Running 1/2" Heilax to a Andrew DB224E 
antenna. This a repeater at my home as I am on a small hill. The antenna is 
about 40 feet vertical and 60 feet horizontally from the repeater/office. 

It works very well but I have had intermod issue that rears its head now and 
then that sounds like rolling pipe or hollow sound. I am runing a PL on both TX 
and RX. This sound opens up the receiver even. So my tx pl is getting back into 
the system. I have hunted down many noise makers in the office that could have 
been helping out. One was the Linksys router. I am going to replace it anyway 
as it makes a ton of noise I found. Changing my network from 100 to 10 on the 
card speed also reduced the noise levels. 

Still I get the rolling pipe sound now and then and it leaves as fast as it 
shows up. If I use my other antenna a Diamond F22 also fed with 1/2 Heliax I 
also get the same result. I do use a preamp but it also seems to not change 
with or without it. I have even ran it so the receive antenna is alone and the 
transmit is the other (split). I still get the rolling pipes now and then.

I do have a FM radio station on 92.1 about 4 miles from me that is known to 
have a sloppy signal. Could it be that this is mixing with my system and 
creating this? 

Looking at getting a DCI Band pass filter on the receiver side but I am not 
sure if that is just throwing more money at this project and not getting 
anywhere still.

Just wanted to see if anyone had some ideas?

Scott KB7DZR