[Milsurplus] TCS-9 Output matching?

[Nick England]

The CU-837/URC is a small box with switchable capacitors for using
standard 50 ohm coax with the TCS. Common use was with an AN/SRA-22
tuner topside feeding a 35' whip. I've posted photos and a schematic
at:
http://www.navy-radio.com/xmtrs/tcs.htm#cu837

The spec sheet I have says the TN-233/SRC is equivalent to the more
common Navy Type 47205 tuning coil but with coax connectors and an
internal dummy load. Hence the specified 3" diameter (!) hardline from
tuner to antenna. Surely a rare instance of an HF transmitter weighing
less than a few feet of attached feedline.

73 & Have Fun,
Nick K4NYW
www.navy-radio.com

On Thu, May 5, 2011 at 3:38 PM,  <WA5CAB at cs.com> wrote:
>
> The only official Navy mod for coaxial cable I know of was to use it with
> TN-233/SRC to feed RG-162/U hard line and apparently still feeding a short
> antenna.  The phantom antenna included in the tuner is 12.5 ohms in series
> with either 100 uuf or 300 uuf.  The only change to the transmitter (and
> receiver) was installation of Type N chassis connectors.  Coax used between the
> transmitter and tuner was RG-9/U.
>