Re: [amsat-bb] AO-40 Schedule Update

["John Wilcox" <ns1z@xxxxxxxxxxxx>]

Has anyone reports on using the DEM 35 watt L band amp? I was pondering
using this at the antenna, a 55 el Loop yagi. With 10 watts in the shack and
the normal loss of LDF4-50 I should have just about 1 1/2 watts to drive it
putting 35 right at the antenna.

My experience with a '736 is that 10 watts L band in the shack is 'readable'
but not adequate...

----- Original Message -----
From: Roy Schulz <VE7BPB@rac.ca>
To: Vince Fiscus, KB7ADL <vlfiscus@mcn.net>
Sent: Wednesday, July 31, 2002 2:01 AM
Subject: Re: [amsat-bb] AO-40 Schedule Update


> Hi Vince,
>
> I also use a TS790 for my  L-band xmitter, and while I have made contacts
> using 10 watts, I don't think you will be happy with that power level. I
> find that it takes at least 20 watts, at the antennas, to get acceptable
> result under most conditions. And at that level you will still not be as
> strong as you could be on UHF. But, the compensation is that LEILA will
not
> be jumping on you for every little transgression, hi...
>
> Also, as far as not being able to work the VHF uplink if you have a
> downconvertor with a 144 IF output, well, that's not entirely correct. You
> may not be able to do it if you are using only one radio, but if you use a
> second receiver, it's not a problem.I find that with my Transystem
> downconvertor, I don't get any desense at all when I try to use the VS
mode,
> running about 40 watts into a 4 element Yagi on 144 Mhz. I'm using an old
> Kenwood TS-711 as my main receiver for mode S, and just use my TS-790 for
> uplink.
>
> See you on there..
>
> regards,
>
> Roy VE7BPB
> Vancouver
>
>
>
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org 

----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org