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Re: L/U Mode USB



>From someone I respect when I hear his words about operating L mode, 
finding QRN on the down link , I have to ask if there is something new 
causing the interference ?
Thanks for your efforts with AO-51 Clair

Joe K0VTY
=========================
On Fri, 8 Dec 2006 21:38:00 -0500 "Clare Fowler" <lcfowler@magma.ca>
writes:
> That was me VE3NPC. At 01:16 I completed a QSO with
> Ed N8BBQ. He was the only readable signal other than
> myself I could copy. There were several that were very week/
> >From this QSO and my previous experinece on 3 L(ssb)/S(fm)
> passes I have the following observations.
> 1. With my approx 1500 watts ERP on L I can only get into
>     AO-51 with a good signal when it is above about 30 degrees
>    elevation wich corresponds to a range of about 1200 kilometers.
> 2. The receiver seems to have a definite threshold below which
>     the signal comming back wanders around.
> 3. We have a problem on L band. On the L//S mode there was
>     strong random impulse QRN which I concluded was local
>     LAN.  However the same strong impulse signals were on
>     the U downlink.  The L band ssb receiver is responding to
>     some very strong impulse signals over Eastern NA.  This QRN
>     was not there for AO-40. This implies that the Eagle
>     team should have some sort of Noise Blanker on board.
> 
> Clare VE3NPC
> 
> ----- Original Message ----- 
> From: "snyderb" <snyderb@cox.net>
> To: <amsat-bb@amsat.org>
> Sent: Friday, December 08, 2006 8:28 PM
> Subject: [amsat-bb] L/U Mode USB
> 
> 
> > BB
> >
> >  This mode is a challange. During overhead pass up the east coast 
> this 
> > evening I could barely hear I believe call sign ending in NPC 
> calling on 
> > the 70cm D/L. I replied but don't know if anyone could hear me.
> >  Any other reports from the BB on this mode.
> >
> > 73 Bruce KG4YEV
> 
> 
> 
> 
> -- 
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> 12/8/2006
> 
> _______________________________________________
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