Hi Chris:
On Tue, 30 Mar 1999 16:32:32 -0800, csnichol wrote:
Tedd, here is the info I got from DB and it worked for mr
I used the the old open stubs to make the new shorted stubs.
I made new open stubs.
I did NOT change any other cables as they were close enough.
You must trim the helix
This data is for a 1MHZ split
This data came from a document numbered MKT019/A 3-20-95,
not an official engineering document but something from
DB's marketing dept. with disclaimers attached
It worked for me.
I tried it the first time you sent it to me and it didn't
make much difference, but I tried it again yesterday, making
all new cables, and it help alot. I think the first time I
included the connector length, but noticed the second time
that the length was "cut" length!
The SWR going into the TX port is now a respectable 1.7 to 1,
from a 3 to 1 (still a little high), but the SWR going into
the RX port went from 2.9 to 1 down to 1.2 to one. This is
using an MFJ 259 with a cellwave 50 ohm dummy load (ex cellular
circulator stuff).
When you got the dimensions from Db, did you specify a TX
and RX pair? I'm hoping that something is just slightly off
as the desense is still very obvious with only a 30 watt
drive (into a dummy load, doesn't make much difference going
into a home-brew "J" pole so the antenna must be ok).
I called Db products in Texas (yes, the 800 number works North
of the boarder!), but could only leave voice-mail for the Techs.
Tedd Doda CET CEO
Lazer Audio and Electronics
packet ve3tjd@va3sed
e-mail lazer@...
