Kenwood TS-440S for Colin in QLD (D.O.T.S + RX & ATU demo)

http://www.razorradios.com/

This neat Kenwood TS-440S for Colin in Queensland came in for some much needed TLC.

The “D.O.T.S” issue...

Monday 20-05-19 ###
So dug in to both VCO5 on the PLL UNIT and VCO1 on the RF UNIT as per pictures.

Cleaning up each component that was to be reused, removing glue and re-soldering each leg to protect against further corrosion. Replaced any electrolytic capacitor that had been extracted.

Any easily accessible jumpers, relays and trim capacitors were re-soldered on both PLL & RF UNIT's.

Both PCB's were cleaned up thoroughly and prepared before any components were to be re-installed.

Also jumpers on PLL + PA + FILTER + IF + AT UNIT's were spray cleaned with DeoxIT D5 for clean electrical connections. These are rather common to start playing up in such an old rig...

Once this rather lengthy process was complete the radio fired up perfectly on all bands!

Tuesday 21-05-19 ###
Few final updates:
LED to S-Meter,
VFO shaft lubricated,
Reference Oscillator / Frequency aligned, was ~30Hz off before,
Some RX sensitivity gains achieved ~1.5-2 dB now sitting around ~15.7 dB SINAD @ 0.222 uV 1 kHz offset,
S-Meter S9 calibrated.

Received excellent on air reports from locals, job done and good to get back on air!!

Music by https://raykostiainen.bandcamp.com/re...

Detailed photo album with descriptions here in link below:
https://www.facebook.com/pg/razorradi...

Feel free to contact us and don’t forget to like us on Facebook!
  / razorradios  
Very reasonable rates!

Thank you for having a look!
43Razor1
Queensland,
Australia

8090491