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RE: F-736r + Drake 2880 users PSE help



Hi Costa,

I'm using FT-736R with Drake 2880 feeding supply from pre-amp switch of
FT-736R. It's working good. I have some problem but not like you. After
I change a jumper in FT-736R to select the band for pre-amp switch to
144 MHz band then my power output drop from 10 watts to 5 watts when I
operate my local FM QSO. It's must be problem with built-in power supply
ot ground problem.

73 Joe
HS2JFW

-----Original Message-----
From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org] On
Behalf Of Francisco Costa
Sent: Monday, November 25, 2002 2:38 AM
To: amsat-bb@AMSAT.Org
Subject: [amsat-bb] F-736r + Drake 2880 users PSE help


Hi All

Despite the bad weather, I (finally) put up my 
satellite antenas! 
VHF and UHF seem to be OK (The first QSO
was a W6FOG/6Y5 on FO-20 at 4 deg elev 
for a new DXCC. Not bad :0)
The next step now is tuning AO-40.
I'm using an 80 cm offset dish, an helix feed and
a Drake 880 (with minimal mods).
I'm feeding the supply via the cable, using "PRE-AMP"
switch of  my Yaesu FT-736r. 
When I turn it on, all seem to be normal: it boost the 
noise level and S-meter moves 1 or 2 S units.
However, about 30 sec. later, the signal drops to zero,
and not even QRM can be heard.
Measuring at 144 coax jack shows less than 11 V.
Is this normal??? (the manual mention 13  V on 
page 11 and 12 V on page 19) 
Looking at Drake specs it shows 14-24 V,
so it's a couple volt short. Is this aceptable?
If  not, is there a way I can raise the 736r voltage?
Thanks in advance for your reply.

73 F.Costa, CT1EAT
http://www.qsl.net/ct1eat

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