[amsat-bb] Re: L/U Mode USB

Clare Fowler lcfowler at magma.ca
Fri Dec 8 18:38:00 PST 2006

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 at cox.net>
To: <amsat-bb at 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

No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.394 / Virus Database: 268.15.15/580 - Release Date: 12/8/2006

More information about the AMSAT-BB mailing list