[amsat-bb] Re: S Band interference was RE: Re: Field Day mode for AO-51

Bob- W7LRD w7lrd at comcast.net
Wed May 5 11:00:07 PDT 2010



What I did some time ago was I told some neighbors that can hear the signal from their device, and that other hams can do the same.  I did not tell them it was just clicks and noise.  A short time later things got quieter. 

73 Bob W7LRD 





 Original Message ----- 
From: "Gary \"Joe\" Mayfield" <gary_mayfield at hotmail.com> 
To: amsat-bb at amsat.org 
Sent: Wednesday, May 5, 2010 4:19:35 AM GMT -08:00 US/Canada Pacific 
Subject: [amsat-bb] S Band interference was RE: Re: Field Day mode for AO-51 


Joe, 

        My neighbors have several "wireless" devices that operate close 
enough to our frequencies to raise my noise level or produce a series of 
clicks and other noises.  The worst offenders are a wireless network and a 
cordless phone.  During the AO-40 era I bought a cordless phone from a 
neighbor that was very troublesome.  I have since moved to a country 
location, and find it interesting that I can tell what direction town is by 
moving my antenna (pointed at the horizon) and listening to the noise level 
on mode S. 

73, 
Joe kk0sd 

-----Original Message----- 
From: Joe v Murray [mailto:k0vty at juno.com] 
Sent: Tuesday, May 04, 2010 10:43 PM 
To: gary_mayfield at hotmail.com 
Subject: Re: [amsat-bb] Re: Field Day mode for AO-51 

Hi Joe 

Your comment about Mode S interference interests me 
I have not been on since AO-40 
In those days there was no interference on mode S. 
Unless it was another Ham. 
Would you kindly explain? 

Thanks 

Joe K0VTY 
=================== 
On Tue, 4 May 2010 22:22:54 -0500 "Gary \"Joe\" Mayfield" 
<gary_mayfield at hotmail.com> writes: 
> I have L band gear.  When the bird is in L/U Luc and I have a great 
> time 
> talking to each other.  When the bird is in V/U I'll make half a 
> dozen or 
> more contacts in a pass.  I voted for mode L, because I didn't 
> believe V/U 
> was an option and S band is becoming too full of interference. 
>   
> I have a couple questions: 
> 
> 1.  The folks who can't eek out a contact with the handheld and 
> Arrow during 
> Field Day, have you practiced?  It's how I have done it the last 
> couple of 
> years without that much trouble, patience and timing are the keys 
> :-).  We 
> have a good Field Day location where I can see down to the horizon. 
> 
> 2.  Has the single contact per FM bird rule really helped anyone?   
> In the 
> old days a couple big stations got on and essentially ran the bird.   
> Is it 
> fair?  NO! but they handed out a lot of QSOs and we seemed to get 
> more AMSAT 
> Field Day entries as well. 
> 
> The one bird one contact has been a noble experiment, maybe it is 
> time to 
> examine the results. 
> 
> Hats off to the controllers for starting the discussion! 
> 
> 73, Just My Thoughts, 
> Joe kk0sd 
> 
> 
> -----Original Message----- 
> From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] 
> On 
> Behalf Of Andrew Glasbrenner 
> Sent: Monday, May 03, 2010 4:33 PM 
> To: Ng, Peter 
> Cc: amsat-bb at amsat.org; ao51-modes at amsat.org 
> Subject: [amsat-bb] Re: Field Day mode for AO-51 
> 
> Ng, Peter wrote: 
> > ...sorry, I meant to vote for V/U mode as I only have VHF/UHF 
> equipment! 
> > 
> >   
> Keep in mind there will likely be three or four transponders birds, 
> and 
> two to four other FM birds available that weekend! 
> 
> It's been my perception that a good portion of AMSAT's sustaining 
> members leave and breathe the highest tech they can manage. Eight 
> out of 
> eight satellites being V/U seems counter to that goal. 
> 
> Mark and Bob both make good points supporting at least one area of 
> refuge for this portion of the AMSAT population. Personally, I think 
> the 
> V/U FM experience on Field Day is a big turnoff to newbies, 
> especially 
> since so many under-prepared, over-powered and out of practice 
> once-a-year sat ops fail miserably to get those bonus points on FM. 
> 
> I bet someone in your area has 1.2 Ghz capability! 
> 
> 73, Drew KO4MA 
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