6 meter interference - channel 03

Tue Mar 22 12:42:56 AKST 2005

Paul:
It would be necessary to try and figure out where the audio amplifier 
stage has some contacts that you would be able to get to; after that, 
the impedance match could prove to be a problem.  It could be done, of 
course, but I have to admit it might not be worth it; you'd have to be 
listening when the guy started broadcasting to find out his call sign, 
etc. and even then, he has every right to be where he is; but something 
co-operative might be worked out.  Lots of if's and's and but's in that 
statement above.
I have mentioned that we used to do it with our old super-regenerative 
receivers, but they used brute force instead of sophisticated 
circuitry.  You could probably run a loudspeaker off those old things.  
I'll keep thinking; it may be possible to come up with something.
You might ask  Radio South about it; they're pattern folks and always 
ready to help however they can.

Bill Glaze

Paul Horan wrote:

> Bill,
>    I have not tried a set of headphones.  What would I hook them up to ?
> I do not have a 6 meter rig to monitor the frequency with, I guess 
> that is one possibility.  Or I could scavange an old receiver, add a 
> diode detector
> and put some headphones after that.  My good receivers are pcm and fm.
>    If it is a ham, probably all I have to do is coordinate with him.   
> I'm more
> concerned if it is a CBer overmodulating and running a linear.
>    Too bad noone makes any 53 Mhz modules and recievers.
> Thanks,
> Paul
> ----- Original Message ----- From: "Bill Glaze" <billglaze at triad.rr.com>
> To: <discussion at nsrca.org>
> Sent: Tuesday, March 22, 2005 2:43 PM
> Subject: Re: 6 meter interference - channel 03
>
>
>> Interesting.  I wrote earlier today about flying about 300 yds. from 
>> a 2000 ft. antenna.  I flew on 6 meters, until recently (need to get 
>> my license renewed), and never had a hit.  Mostly on ham band 04, 03, 
>> and some on 53.1; I'll have to take a look at my collection of 
>> modules and see if I have anything below 51 MHz.  Of course, the 
>> 50-50.1 custom on 6 meters as a set-aside for CW only, is just a 
>> "gentleman's agreement" and is not a law.  Still, most seem to abide 
>> by it; but there's always a guy or 2 that doesn't get the word.  Have 
>> you been able to hook up a set of headphones to check and see if you 
>> can hear anything?
>>
>> Bill Glaze
>>
>> Paul Horan wrote:
>>
>>> Mark,
>>>    What are the frequency allocations for digital tv ?
>>>    I don't think that's what is happening to me but will check into it.
>>> Until a couple of years ago I did not have any interference, in the 
>>> last
>>> two years it appears to have been getting worse.  Almost lost my 
>>> Prophecy yesterday.
>>>    I am aware of the TV channel 2 problem, when I lived in Houston
>>> the local ch 2 had such bad lower sideband suppression that hits on
>>> 6 meters were a way of life.
>>> Thanks,
>>> Paul
>>> ----- Original Message ----- From: "Atwood, Mark" 
>>> <atwoodm at paragon-inc.com>
>>> To: <discussion at nsrca.org>
>>> Sent: Tuesday, March 22, 2005 10:12 AM
>>> Subject: RE: 6 meter interference - channel 03
>>>
>>>
>>>> Digital Tv.  Local channel 02 has basically wiped out our 53mhz band
>>>> completely.  The FCC and the station are both aware that they're
>>>> broadcasting outside their boundries, but given the aggressiveness 
>>>> with
>>>> which they want Digital TV up and running, the FCC has stated that 
>>>> they
>>>> will be lenient for a period of time to get things in order.  The
>>>> station has been forthcoming with admitting that their bleeding over,
>>>> but have yet to invest in the equipment needed to prevent it. It'll
>>>> probably be a few years I'm told.
>>>>
>>>> Not sure if the same could be happening to 50mhz...  But that's the
>>>> story on the 53 bands here.
>>>>
>>>> -Mark
>>>>
>>>> -----Original Message-----
>>>> From: discussion-request at nsrca.org 
>>>> [mailto:discussion-request at nsrca.org]
>>>> On Behalf Of Paul Horan
>>>> Sent: Tuesday, March 22, 2005 10:31 AM
>>>> To: discussion at nsrca.org
>>>> Subject: 6 meter interference - channel 03
>>>>
>>>>    I am getting interference on Channel 03 , 50.86  Mhz.  The 50 
>>>> mhz rc frequencies are in the CW portion 50-50.100 6meters.  My 
>>>> symptoms were a few holds, plane did no fly smoothly, and 2 failsafes
>>>> - low throttle.
>>>> Any ideas what are the best channels on 6 meters to stay away from
>>>> interference ?  Of course, one
>>>> solution is to go to the regular RC freqs.
>>>>    Any ideas if this interference can be due to some other cause ?
>>>> ThanksPaul Horan
>>>> KC5NF
>>>> AMA 57131
>>>> NSRCA 3606
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>>
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