[amsat-bb] Re: Two Questions

Joe nss at mwt.net
Thu Sep 22 17:47:43 PDT 2011

See Below,
On 9/22/2011 5:50 PM, Ted wrote:
> "Are the linear sats too complicated?
> Do people not have SSB and CW equipment or are they just not interested anymore."
That is Hard to say,,
> Tom, speaking only for me, I have tried several times to work a linear. I
> have a TS 2000 with the sat function and HRD sat program which allegedly
> adjust the Doppler, 2m/440 SSB and a Elk on a rotor w/fixed el..  Try as I
> might, I cannot get the tx and rx to match so I can duplex.
There is a simple fix to this,,  SHUT ALL THAT CRAP OFF! In the 70's we 
didn't have anything like that. The flight computer if you were lucky to 
have one was a piece of cardboard with a clear plastic overlay to tell 
you where the Bird is,
An "Oscar Locator" it was called.

As far as doppler correction,,, we turned the large knob on the front of 
the radio,  thats our doppler correction system.
> There just does not seem to be single primer that one can follow on how to
> accomplish the process. There are multiple opinions from individuals, but
> not much of a consensus on a good standard process. Admittedly, I have
> problem not given a fair amount of time on my technique as I was
> concentrating on VUCC. Now that that will go to the card checker tomorrow, I
> need to spend some time on the linear. I just wish there was a 'manual'
It's called doing it "Manually"

Simple and very effective  thousands of hams did it for decades, no 
reason it won't work now.

> 73, Ted
> -----Original Message-----
> From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
> Behalf Of Thomas Doyle
> Sent: Thursday, September 22, 2011 12:02 PM
> To: AMSAT-BB at amsat.org
> Subject: [amsat-bb] Two Questions
> I have two questions that I have wondered about for quite a while.
> There was a gap in my satellite activity of 20 years or so. AO-10 was the
> last satellite I used a lot.
> Not sure what sparked my interest again but I have been having a great time
> on the satellites.
> Right from the beginning I noticed that things have changed a lot. I have
> made about 70 contacts
> on CW, SSB and  FM. Most of the contacts have been on FM.
> Question 1 relates to activity levels. I have 270 something countries on HF
> so I have been in my
> share of DX pileups. What I find really strange is how there will be the
> usual horrific pile up on AO-51
> and then when an FO-29 pass comes a short time later there will usually be
> no one on. I realize the
> emphasis is all on "keeping it simple" but wonder how this change occurred.
> Did it happen all at
> once -  did it happen when the last HEO satellite died. Are the linear sats
> too complicated. Do people
> not have SSB and CW equipment or are they just not interested anymore.
> Question 2 relates to the rest of the world. I notice that FO-29, which
> seems to be the best linear
> satellite, came from Japan. What is activity like in Japan/Europe and the
> rest of the world outside
> the US. Is it mostly just FM on V/U sats. I believe the current US effort is
> an FM only Fox with a
> linear sat in the "2015 time frame". Since the FO-29 activity is almost zero
> it would see strange to
> put up another US linear sat at any time. As old as I am the "2015 time
> frame" might be beyond
> my chicken little date so I wonder if there are there any LEO linear sats in
> the works in other parts
> of the world.
> I am not complaining I just wonder what happened and what the future holds.
> Feel free to reply
> directly.
> 73 W9KE tom ... AMSAT LM 0875
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