In many cases where a longer than normal (what ever that is) cordage is
used, often a second set of smaller conductors will be found to provide a
sensing voltage back to the power supply. Via than means the voltage
reference is actually measured at the load end of the cord and adjusted
accordingly by the fast response of the power supply regulator. Of course,
one must have a power supply with the capability of remote voltage sensing.
Many do, except they are jumpered inside or one the output terminal strip.
As to the ORION cord, it is just fine for the length provided.
73
Bob, K4TAX
----- Original Message -----
From: "Grant Youngman" <nq5t@comcast.net>
To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Sent: Tuesday, May 24, 2005 7:23 AM
Subject: Re: [TenTec] Orion power cord
The supplied power cord for the Orion seems kinda wimpy to
me. Has anyone changed to a larger wire and noticed any difference?
If your power lead is SHORT and/or you see no contrast change on the
screen
when you key down at full power it's probably ok. If you have a longer
run
to the power supply use the spare connector and make up a new cable. I
managed to squeeze a #10 cable into the connector pins.
I actually go a step further, and transition a short #10 tail out of the
radio to a #6 run to my power source. The reason is that I have a longer
cable run (8') and it goes to a DC battery backup system. A few tenths
of
a volt saved in cable losses adds up to more operating time out of the
backup system when the lights are out. The difference is significant.
The
drop through an 8' piece of #14 wire at 25 amps is about 1.2 volt.
Through
the same run sized at #6 it's only about .2 volts.
Grant/NQ5T
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