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| | |-+  Need feed volunteer for Chicago Approach 125.0
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Author Topic: Need feed volunteer for Chicago Approach 125.0  (Read 3236 times)
dave
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« on: December 01, 2013, 11:35:50 AM »

We have some unfilterable interference right on 125.0 at our Chicago megafeed site so we've finally had to lock out 125.0.  This creates a hole in the Chicago Departure coverage, especially overnight on the mid shift.

If anyone is within range of O'Hare (5-12 miles +/-) and think they can help, please contact me.

Thanks,
Dave
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Chananya Freedman
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« Reply #1 on: December 01, 2013, 01:22:16 PM »

Didn't you tell me Dave that there was nothing that could be done to fix that problem?
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Chananya Freedman
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« Reply #2 on: December 02, 2013, 02:12:36 AM »

Didn't you tell me Dave that there was nothing that could be done to fix that problem?
It's likely that nothing can be done to fix the problem at the current feed location. If someone can set up a scanner at an alternate location, the interference probably won't be an issue there.
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CFI ASEL
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« Reply #3 on: January 20, 2014, 01:52:49 PM »

Chananya contacted me via PM, since he saw that I live near KORD, and asked about my reception of 125.0.  I have a Sony Wavehawk with a Diamond RH77CA whip.  I can pickup both sides with no problem, but I also have the constant carrier with a squealing noise.
« Last Edit: January 20, 2014, 03:15:40 PM by Flyingnut » Logged

Marty
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dave
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« Reply #4 on: January 20, 2014, 01:53:42 PM »

Chananya contacted me via PM, since is saw I live near KORD, and asked about my reception of 125.0.  I have a Sony Wavehawk with a Diamond RH77CA whip.  I can pickup both sides with no problem, but I also have the constant carrier with a squealing noise.

Thanks Marty‚Ķvery unfortunate, that frequency is.  smiley
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Chananya Freedman
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« Reply #5 on: January 20, 2014, 01:59:07 PM »

Dave there is nothing anyone can do? it is a very important frequency in my opinion.
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Chananya Freedman
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« Reply #6 on: January 20, 2014, 02:13:38 PM »

As a follow-up, I also have a Vertex-Standard VXA-210 Pilot Nav/Com Transceiver which I have for backup communications for GA flying.

I also get the constant carrier with a squealing noise with that unit too on 125.0.
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Marty
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« Reply #7 on: January 20, 2014, 02:27:27 PM »

It's a very important frequency - but we have yet to find a location around Chicago that doesn't have interference on that frequency.  125.0 is a very bad frequency, primarily due to cable TV leakage interference and possibly other things.  Very hard to filter out.
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Chananya Freedman
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« Reply #8 on: January 20, 2014, 02:38:44 PM »

Is there anything they can do at the transmitter sight to minimize the issue?
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Chananya Freedman
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« Reply #9 on: January 20, 2014, 02:41:39 PM »

Is there anything they can do at the transmitter sight to minimize the issue?

Yes - there is one thing.  Stop using 125.0 and switch it to a different frequency.  smiley  It has nothing to do with the transmitter per se - it has to do with the frequency.
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Chananya Freedman
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« Reply #10 on: January 20, 2014, 02:44:19 PM »

Have they thought about it?
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73's KI6YIL
Chananya Freedman
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« Reply #11 on: January 20, 2014, 02:45:13 PM »

Have they thought about it?

Unless they start having issue communicating with aircraft they won't be thinking about it.  The FAA only cares about operational issues - this is not an operational issue.  It's just an annoyance to those of us who would like to listen.
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Chananya Freedman
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« Reply #12 on: January 20, 2014, 02:51:31 PM »

Didn't it work a little bit better on the old ORD departure? Feed at least it didn't keep the squelch open very long and you can hear both sides. What happen to that violator
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73's KI6YIL
Chananya Freedman
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dave
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« Reply #13 on: January 21, 2014, 01:07:01 PM »

We're still looking for a volunteer in range of ORD willing to feed 125.0 - that is about all I can say right now.  Doesn't really matter what there was before.  smiley
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Chananya Freedman
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« Reply #14 on: January 21, 2014, 01:12:30 PM »

I will send you an email this week, probably Thursday.
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Chananya Freedman
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