[amsat-bb] Re: HF Satellite Relay
nss at mwt.net
Wed Jun 30 16:50:18 PDT 2010
The article by VJB makes it sound like this airplane scatter is just as
weak and any other weak signal mode.
That is not what I remember for two reasons.
1- we had full scale signals on 2 meter FM simplex.
2- Imagine how strong the reflected signal has to be off the plane to
totally cancel out a megawatt direct signal from a TV Transmitter? you
know arrive 180 deg out of phase so it take that mega watt STRONG signal
and makes it drop into the snow. That can't be no weak signal for sure!
The Original Rolling Ball Clock
On 6/30/2010 11:48 AM, i8cvs wrote:
> ----- Original Message -----
> From: "Joe"<nss at mwt.net>
> To:<amsat-bb at amsat.org>
> Sent: Wednesday, June 30, 2010 4:35 PM
> Subject: [amsat-bb] Re: HF Satellite Relay
>> I agree,
>> Now about reflecting off of odd shaped things. A buddy an myself used
>> to in the late 70's have fun on 2 meters just playing around. we were
>> too far apart for direct communication, I was in the northwest suburbs
>> of Chicago, he was down in central indiana.
>> We would point our 4 ele beams at eachother and run like a meteor
>> scatter transmission sequesnce. and would make a qso. it was flaky and
>> wide variations in signal strength. But what did we use?
>> It was all the Jets coming in to land at Ohare! between us was the main
>> route for all the jets to com in on. The route killed TV all the time
>> by making signals in phase and then out then in then out, so we thought
>> if it's strong enough reflection to cancel out a direct megawayy
>> signal, hmmm. so we tried and it worked and worked faily well. each
>> "Opening" lasted between 10 and 15 seconds. and would go most times from
>> s zero to peg the meter.
>> was fun and thats an odd shaped reflector. that for me was ohhh 60 miles
>> away, and for him close to 100 miles.
>> Joe WB9SBD
>> The Original Rolling Ball Clock
>> Idle Tyme
> Hi Joe, WB9SBD
> I agree that the QSO was possible because It was the reflection of all the
> Jets coming in to land at Ohare! between you and your ham friend it was
> the main route for all the jets to com in on.
> For the above reason I have sent to you a zipped file of a very interesting
> article on this matter titled "Aircraft Scatter" written by Kent Britain,
> If someone is isterested on it drop me a request off line.
> Best 73" de
> i8CVS Domenico
More information about the AMSAT-BB