[VHFcontesting] transverter questions

[Robert Cumming]

Gene

I run the DEMI unit on 222 and find it to have a very Hot 
Receiver.  Most times I don't even use my Mast mounted Preamp.  It 
drives my TE Systems brick to 120 W.

I use a home brew switch box transfer the 28MHz IF of an Icom735 
between transverters for 144 (Microwave Modules) 222, 432, 902 and 
1296 (all Demi Units).  I also use Steve's transverters on 2304, 3456 
and 10368 with good results.  The 2GHZ+  units use a 144 MHz IF 
through a different switch box to an Icom 290H at 1W output.

I have used other transverters in the past and find the DEMI units 
deliver the best Bang for the Buck.  Also in a contest situation they 
outperform any Stand alone radio on any band above 6M.  I continue to 
use a Icom 756Pro on HF and 6M (its front end stands up well to 
overload from nearby high power stations.  Likewise for the DEMI 
Transverters and a good 28MHz IF radio.

Kudos to Sandra and Steve at DEMI for great customer service and 
their continued support to the weak signal society.


VRY 73
Bob Cumming
W2BZY
QRV 160M - 9CM + 3CM (5760 next)
from EL98hr


At 11:58 PM 2/3/2008, Gene Gabry wrote:
>Hi,
>
>First, please reply direct with your comments.
>
>I am going to be adding a 222mhz transverter to my
>station and would like to hear opinions pro/con from
>users of the DEMI 222-28 and Elecraft XV222. How do
>each of these perform in contest conditions? I think
>the noise figure spec on the Elecraft is slightly
>better than the DEMI, according to the specs on each
>suppliers web site.
>
>Anyone using a Kenwood TS-2000 as the exciter? If so,
>how do you have your transverter configured? Do I need
>to modify the TS-2000, or will either of these be plug
>and play? It looks like I will need the AOS-28
>interface if I go with the DEMI unit. If I read the
>manual correctly for the Elecraft, I should not need
>an interface.
>
> >From a kit construction stand point, comments on how
>the two compare, parts count, difficulty to build,
>test equipment required?
>
>The TS-2000 manual is not very intuative as far as
>transverter operation. I think the keying line is the
>same line that would be used for keying a VHF amp, via
>the EXT.CONT connector? Comments.
>
>Thanks for taking the time to read and respond.
>
>I am hoping to be active on 222 SSB in the june
>contest.
>
>Respond with comments to either < n9tf at comcast.net >
>or < gene_n9tf at yahoo.com >
>
>73 Gene N9TF, EN52xg
>
>
> 
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