If your radio does not have an orange or green dot on the logo, I've found
using a black and green dc power cable (instead of black and red) reduces
the amount of angry energy flowing between the headphones and the radio.
Scientists have proven that green will cause less additional anxiety because
it doesn't keep reminding you that your logo is the wrong color.
If you cannot find a green cable and must use red, I've found it helps
considerably to insert an optocoupler in the headphone lead, thus isolating
the anxiety waves from the radio; just be sure it is not red.
Your mileage may vary.
73
Rick, DJ0IP
;-)
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of jack
Sent: Saturday, December 14, 2013 2:23 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] which power supply.station efficiency
I agree with Richards: I have an RS-35A for each of my Orions. I can run
them SO2R. the wiring is direct to each radio from the power supply with #10
wire (red/black). the SO2R box from Yankee Clipper runs off one RS-35A. I
found that a RS-20 was NOT enuf for the Orion to operate consistently. The
SO2R+ box from Yankee Clipper pulls very little power so it makes no
difference I can see. it also has a power cable direct from RS-35A to SO2R
box of #14 wire.
jack
ak7o
-----Original Message-----
From: Richards
Sent: Friday, December 13, 2013 5:54 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] which power supply.station efficiency
Er... um... on the advice of Gary and Paul at TenTec, and from the Brand-X
Service Dept, I eliminated the power distribution panel, and shortened all
my power supply leads, and connect them directly to the terminals on my
RS-35M power supply. I upgraded all transceiver power leads to minimum 12
gauge wire, as short as possible. My Brand-X radio is kinda sensitive to
any significant voltage or current sag when running full blast, so I give it
the best chance possible. Various sources indicate nominal 12 v PAs are
typically sensitive to such sags.
There is no need to have a separate power supply for each rig, if you pay
attention and run them all at once. Consequently, I employ one RS-35M
dedicated solely to powering one transceiver at a ztime, and
another RS-35M to powering various accessories. I cannot quantify it
with meter measurements, but I believe it all runs better that way.
I also have ferrite beads on the power leads, but I am with you - I cannot
say they are doing anything in particular, but remain in place just in case.
I believe (ideally) every extra patch cable, connector, etc., in line causes
an ever so slight impedance and voltage or current or whatever "speed-bump,"
so I have become a "Minimalist" and have tried to eliminate as many such
speed-bumps as possible.
Oh, sure, I know neither the contact operator nor I will notice a mere
.25 dB drop in signal strength, but it is the principle of the thing. I
also believe it is cumulative - as in the famous quote by Sen Dirkson,
possibly made in a different context...: "A dB here, a dB there; pretty
soon it adds up to real power loss." Er... um... I think it is how it
goes.
So, if I were looking to maximize station efficiency, I would eliminate the
power distribution strip. That was the absolute very first thing Master
Technician Paul C asked when my Jupiter acted funny. It is also the first
question I received from the Brand-X Service Dept, on a related question,
but regarding a different rig.
That is just MY take, of course... you mileage may vary.
========================= K8JHR ==============================
On 12/13/2013 11:40 AM, denton sprague wrote:
> Ok..got some nice replays on all of this..
> Currently have one of my Astron 35M's feeding either the Omni 7 or the
> Eagle from a power strip..this should do until I have done more
> research on a more efficient power supply situation.
> I would prefer to have separate power supplies for each of the hf rigs
> just to get some isolation between them rf wise..has this been a
> problem with anyone else?
> Have been using clamp on ferrite chokes on the dc line from the strip
> to the rigs but can't tell if they are really doing anything.
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