Bill,
Thanks for the info.
Interesting setup with four 1200 watt amps. Are you operating on 13.8 VDC?
Concerning the SG500: I found that the are somewhat forgiving to short SWR
changes, but will trip quickly on undervoltage. So a stiff power supply is
mandatory.
I've heard that Henry has stopped the production of HF amplifiers, so I
assume the SS1200 is not available anymore.
CCI does not reply to e-mail, they might be out of business too.
Cheers, Dick
PA3DUV
----- Original Message -----
From: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
To: "PA3DUV" <pa3duv@planet.nl>
Sent: Saturday, February 12, 2005 4:56 PM
Subject: Re: [Amps] 3 dB mobile power increase
Yes the trouble is... they monitor too many things... and will trip
off-line. When one trips, the other trips. The CCI combiners are very
good quality... and are relatively cheap. I currently use four 1200 watt
CB amplifiers combined together in the mobile... and let them loaf at 1500
watts output.
The Henry SS1200 is another option. I have a friend that has one. They
work well. You might check out the CCI kits too. I think you can build
something just as good for les than half the price.
Sincerely,
Dr. William J. Schmidt, II K9HZ
Trustee of the North American QRO - Central Division Club - K9ZC
Email: bill@wjschmidt.com
WebPage: www.wjschmidt.com
"If computers get too powerful, we can organize them into a committee;
that will do them in." -- Bradley's Bromide
----- Original Message -----
From: "PA3DUV" <pa3duv@planet.nl>
To: <wmschmidt@charter.net>
Sent: Friday, February 11, 2005 4:26 PM
Subject: Re: [Amps] 3 dB mobile power increase
Thanx!
If the two SG500 units pose a problem I will sell them and get SS1200
from Henry. I need to redo the DC system in the car anyway. I know they
are sensible for SWR changes I use ine , but with appropriate splitter
and combiner design that should work ok. I need to provide adequate T/R
swithing though.
Dick
----- Original Message -----
From: <wmschmidt@charter.net>
To: "Dick Knol" <dick.knol@planet.nl>
Sent: Friday, February 11, 2005 8:51 PM
Subject: Re: [Amps] 3 dB mobile power increase
I've done this... Try Communication Concepts for the combiners. The SGC
power cubes dont behave well when combined though...
From: Dick Knol <dick.knol@planet.nl>
Date: 2005/02/10 Thu PM 07:02:26 GMT
To: Amps@contesting.com
Subject: [Amps] 3 dB mobile power increase
Gentlemen,
I just purchased another SG500 solid state HF amplifier.
The plan is to install this unit ajacent to the other SG500 amplifier
in my car, and to combine both outputs in order to achieve a 3 dB power
gain.
Both units will be powered from 2 dedicated 100 AH gell cell batteries.
Does anyone have experience with high power splitters/combiners?
Both SG500 units will be driven from the IC706MKII through a splitter,
and the output combined and terminated in the HiQ 5-80 centerloaded
vertical mounted on the trailer hitch.
What issues have to be taken into account in order to build a combiner
according to sound engineering standards?
Cheers, Dick Knol
PA3DUV
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