Can anyone recommend to me how they remove dc from the coax before rf hits my
preamps and fry's them.? I see a box on eBay that a guy is selling but it seems
to be a device that uses relays and is designed to key external rf amps using
the din connector on the ts2000. I'm not certain however
I guess I need to better understand what preamps you have.. having DC on
the coax might in fact key them up instead of harming them.
If memory serves me, the SSB preamps have the option of being fed up the
coax or via separate line. I chose the latter choice, only because at
the time, the
In the past I always used the DCW-15B sequencers. Just Google them.
Stefan
On Fri, Aug 24, 2012 at 10:54 AM, Lawn, Richard rl...@uarts.edu wrote:
Can anyone recommend to me how they remove dc from the coax before rf hits
my preamps and fry's them.? I see a box on eBay that a guy is selling
I suspect the issue with the Icom preamps and a TS-2000 is that the Icom
preamp does not appear to RF-sense.. if there's DC on the coax, it's in
line, if there's not DC on the coax, it's bypassed. I run the SSB
SP-2000 and it can handle 200 watts RF-sensed. No sequencer necessary
with the rig
SPROUT, a 20 x 20 x 22 cm amateur radio SSTV nano-satellite with a mass of 6.7
kg, plans to launch with the L-band (1236.5 MHz/1257.5 MHz/1278.5 MHz)
Synthetic Aperture Radar (SAR) satellite ALOS-2 in January, 2013.
See http://www.uk.amsat.org/?p=9837
73 Trevor M5AKA
AMSAT-UK International
This link is very useful and one I didn't find when I searched. It seems that
with the particular preamp and xcvr I have a sequencer is needed to ensure dx
is removed from the coax before rf is introduced. I think the easiest solution
is to get a different preamp once I get my icom repaired. I
I've had phenomenal success with the SSB preamps over the last 25 years.
I have one for both 2 meters and 70 cm and if I had anything worth
mentioning on 6 meters for an antenna I would have one there as well.
Prior to that I used Landwehr.
For my EME station I am using a DB6NT receive-only,
AMSAT-UK are delighted to announce that Howard Long, G6LVB, will be present at
the Colloquium this year and will be launching a new FUNcube Dongle PRO-PLUS
during his presentation.
Full technical details have been embargoed until his talk and we are not
permitted to steal his thunder by
NASA Preparing Mini-Satellites To Send Into Space Powered By The Nexus
One and Nexus S
posted on Aug 24th 2012 at 4:54am by Chris Chavez
The boys at NASA have been making headlines after hitting the sand
dunes of Mars with their mini go-cart, Curiousity, and it looks like
they have a few more
I have been working with some of the new low cost RTL2832U+E4000
dongles that are flooding the market. It appears that they are
designed for the digital TV market in some countries outside the US.
They cost about $20. They usually come with an antenna and a remote
control. The antenna and remote
Hi,
Cleaning the shack, and I have a spare FCD Pro V1.0 SN 188 for sale. This
is first generation and does not provide +5V on the antenna as do the V1.1
units.
It is in perfect electrical and mechanical condition, and used only the
shack. $80 including shipping to North America.
Please
I contacted the YW5B in 24.945 and they have problems to be on SAT, so will be
in another expedition.
Omar
XE1AO
DK89df
M.C. Omar Alvarez Cárdenas
Facultad de Telematica, U de C
316 1075
xe1...@ucol.mx
omar...@hotmail.com
I have been using external (mast mounted) preamps for 2m and 70cm from ARR
with my TS-2000 for 2 years and quite happy with their performance. These
RF-switched preamps just work always and they're weather proof so virtually
no maintenance is needed. Note that they can only handle maximum 160W RF,
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