6 meter interference - channel 03

Bill Glaze billglaze at triad.rr.com
Wed Mar 23 06:19:51 AKST 2005 

Jerry:
Interesting in that your experiences and reasons are exactly congruent 
to my own.  Went the extra mile to get a Ham license, all the while 
never intending to go "on the air."  Strictly for model flying.  Bill Glaze

Jerry Budd wrote:

> That's interesting.  I've flown JR equipment exclusively on 53 and 50 
> mhz (specifically 53.8 and Ch's 00, 02, & 04) since 1990 all over the 
> country with NO hits or glitches.  Not one.  The equipment was a 
> mixture of PPM and PCM (mostly the latter), and for the most part 
> single conversion ABC&W receivers.  In that time I've lost three 
> airplanes, none due to interference.  I lost one due to a bad rx 
> battery, one due to a failed switch, and one due to plugging the 
> aileron extension into the retract channel and vice versa (don't 
> ask... it's a long story).
>
> I switched based on the theory that the fewer people with radios on my 
> frequency, the less likely someone could "turn on" and shoot me down.  
> So far, at least in the local club, it's worked (there is no one else 
> on my frequency in our club of 100+).
>
> Based on my experience you'd have a hard time convincing me to switch 
> back to 72 mhz.
>
> Jerry
>
>
>> JR does not make any radios on 53MHz.  In fact, Horizon is not 
>> recommending any 6 meter radios at this time (their technical people) 
>> due to interference.  I was considering changing from 72 to 50 but 
>> was advised not to do such.  Dwayne
>> ----- Original Message ----- From: "Atwood, Mark" 
>> <atwoodm at paragon-inc.com>
>> To: <discussion at nsrca.org>
>> Sent: Tuesday, March 22, 2005 3:32 PM
>> Subject: RE: 6 meter interference - channel 03
>>
>>
>> Doesn't JR make 53mhz stuff anymore??  I'm on all Airtronics now, but
>> all of my JR stuff was on 53.  We did have a local repeater running on
>> 53.8 which caused us some grief until we figured it out, but as you
>> said, it was only a matter of coordinating with the hams.  We stayed of
>> 53.8 and they were excellent about keeping their equipment in tune.
>>
>> -M
>>
>> -----Original Message-----
>> From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
>> On Behalf Of Paul Horan
>> Sent: Tuesday, March 22, 2005 4:04 PM
>> To: discussion at nsrca.org
>> Subject: Re: 6 meter interference - channel 03
>>
>> 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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