[ARC5] AN/ARC-5 on MF 630 Meters

[David Stinson]

ARC-5 on 630 Meters.
Been meaning to try this for a long time.
Since I'm not allowed to pick-up anything heavy
and am on leave to recoup, I got working on this.

My AN/ARC-5 set has the goodies
for the T-15 T-16 T-17 MF transmitters.

https://photos.app.goo.gl/PhueH4gcrP4BWyQ8A
(Yes I forgot to change the RX Control Box dial.)

The T-15 will indeed easily go down to 470 KC.
Mesh the Oscillator cap, leaving about a 25 degree
angle unmeshed.  472 KC will be at about 505 KC
on the dial.  The Plate trimmer on mine resonates
within the range of the set screw.  It's making
good power, though I can't measure it (scope probe
broke), but it will light-up a big florescent bulb fully.
None of the TN-6 loading was used, but did like
the little neon bulb ;-).  The TX roller coil was at about
a third, link at about 80%.

Here is the signal (to a very poor substitute antenna)
keyed in CW mode with the microphone button.
received on an SDR receiver about 30 miles distant.
Lots of QRN:
https://tinyurl.com/58ywxdt7

Here's a Video:
https://tinyurl.com/mru6cd52

When the docs let me do more, I will replace my storm-
wrecked "Titanic Antenna" and make some contacts
on CW.  Gonna be cool.

GL OM DE Dave AB5S


-- 
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus