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Weird noise on the KCACS 145.430 repeater input, repeated to its output... Transmitting on the repeater input with NO PL will cause the
garbage to go away, provided nothing else with a tone shows up to get the "loop going"... Moreover, with lots of power from my station I can get whatever is bonking the input to briefly "do its thing" by transmitting on the OUTPUT frequency of the repeater and then listening on the input, basically the "rig operating in reverse"...

The "destructive mixer" whatever it is, is barely receivable at my home qth on the " high omni" and NOT receivable on a much higher gain, but much lower, and horizontally polarized Yagi... no matter where I point.
Would really help if the power line noise would go away for awhile!!!

In the time it has taken to compose this the repeater has fallen silent, either by control operator intervention or removal of the interfering device. Will check here shortly...

Eric
KB7DQH

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That is how the people at DARPA think. they take things and use them in unconventional ways, to see what happens.

Seems the timeout timer did its job, and then the repeater ID'ed, thus getting the loop started... :puke:

Gonna stomp it out and enjoy a quiet frequency for awhile, until..........

Eric
KB7DQH

PS... Signal reports and azimuths would be greatly appreciated.
Tune receiving devices to 144.830!!!!

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That is how the people at DARPA think. they take things and use them in unconventional ways, to see what happens.

Apparently someone has set up some sort of "bilateral" repeater system
which is pulling the output from the 145.43 repeater and re-transmitting it on the repeater input frequency. Signal is weak at my QTH but when the local KCACS machine is silent I can actually work through this "link" in BOTH directions!!!

BUT on its 144.830 TX there is a 100.0 hz tone generator. That is what "clued me in" on what it might actually be and my subsequent testing bears this out.

NEED HELP locating and removing this piece of equipment from the air!!!!

Eric
KB7DQH

_________________
That is how the people at DARPA think. they take things and use them in unconventional ways, to see what happens.

I hear you on the output and barely on the input in Renton.
Nothing else on the input from here.

Next question... This is when I am transmitting on the output, or, the input??? :mrgreen:

If I transmit through the 145.43 repeater in Kitsap County I need to use a 179.9 PL.... I have been rather successful at
making the racket go away by holding the input frequency with no tone so as to capture out the interference and "squelch" the repeater's receiver... until such time as the repeater transmitter shuts down. Then I can unkey and we have a "clear" frequency until something opens the squelch on the repeater which obviously keys it, and when the repeater transmitter is heard by the "mystery link" it gets repeated back to its own input... HOWEVER the signal level from this "mystery link" is weak enough that it does not do a really good job of holding the repeater squelch open and the resultant feedback racket gets chopped up by a combination of propagation variations and the desense that happens with all repeater systems...

Funny thing is if I transmit on the repeater output frequency I can hear a "squelch tail" very weakly but at the same signal level as the interfering "mystery link" immediately after I unkey my transmitter... If I do this without the 179.9 tone then the repeater doesn't key from my signal on the output frequency repeated to the repeater's input frequency. I note the same "effect" if I transmit on the repeater input frequency with no PL... a very weak "squelch tail" is heard after I unkey my transmitter, but from the "mystery link" rather than the actual repeater. Does any of this make sense :mrgreen:

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That is how the people at DARPA think. they take things and use them in unconventional ways, to see what happens.

Strange stuff. I put a better antenna on the radio and detect the interference at the ID with a tone of 107.9. I switch to the input and hear the weaker signal with a tone of 100. Once it goes away I only get static on both sides.

Powerline noise down and able to get a "preliminary" azimuth from my QTH in the South end of Kitsap County, bearing roughly 30 degrees True from here...

This is the 145.43 input device outputting on 144.830, no PL required to key it.

There is another device with its input on 144.830, outputting on 145.430 which does require a 100.0 hz PL.
Although this would be the "standard" repeater configuration, it is NOT however co-ordinated.

Neither is the "reversed" device either :puke:

Kerwin did copy an ID, but don't know if it is the "authorized" Canadian repeater on this pair (seldom if ever heard here unless the tropo is Really Good) or was repeated from the Canadian-flavored 145.430....

Still staying tuned...

Eric
KB7DQH

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That is how the people at DARPA think. they take things and use them in unconventional ways, to see what happens.

Repeaters in BC that are on 145.430 with input of 144.830:

VE7DJA Naniamo, BC (Vancouver Is.) tone 141.3 or no tone

VE7RCN Victoria, BC no tone

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" SILENCE IS CONSENT "

Made to Government Specs:
1) Measured with a micrometer.
2) Marked with a chalk.
3) Cut with an axe.

Jim N7UAP - Bellingham, WA / InterceptRadio.com

Is this still happening?

And what end of Kitsap are you? South, Central, ?? I head north in the morning for work and can do mobile integration on it if needed...

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"A well regulated breakfast, being necessary to the healthy start of the day, the right of the people to keep and eat food shall not be infringed."

Lewis County has a 145.430 repeater west of Winlock at about 1500'. I believe their tone is 110.9 however.

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"I was installing un-programmed radios"

I copy it in Seatac.

I heard it in Olympia earlier. It does sound like something is mixing in

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"I was installing un-programmed radios"

I believe there is a repeater in Alberta on that pair that uses that tone.

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Mt Wave SAR member
Support Search & Rescue: Get Lost!
http://www.mwave.org

Took a "Bus Trip" to the repeater site and along the way spun the Yagi to see where things were. Looks like either a "single hop" pair of dualband rigs in crossband repeat, or a pair of these, but without more receivers in the area (and test transmitters) with communications on some form of "voice orderwire" (Microwave/TELCO geeks know of what I am speaking :mrgreen:) one will not know for sure exactly what is or is not happening.

For the time being to prevent any harmful destruction of the KD7WDG repeater, it has been turned off.

Not a problem as finding one of these transmitters, either the rogue 145.43 machine with its input on 144.830, using a PL of 100.0,
OR the 144.830 repeater with carrier squelch which OUTPUTSa 100.0 PL, and PASSES whatever tone is presented at its input of 145.430

is a simple matter of presenting one of the receivers with whatever keys its corresponding transmitter.

Results of the preliminary DF activity indicate these devices are located somewhere in the North King/South Snohomish County region,
being South of N7NKO's QTH near Machias, WA, and North and East of
Kerwin's QTH and definitely Northeast of the repeater site :nobs:

So there you go, a general area to look around in...

Happy Hunting!
:chaingun:

Eric
KB7DQH

_________________
That is how the people at DARPA think. they take things and use them in unconventional ways, to see what happens.

At 810 am 3/22 Im hearing conversation at about s2 here in Seatac.
Its too faint to get a id.
Ill try to get a direction with my satellite antenna if it keeps up.