M0NWK

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Solent 1.3GHz / 23cm Amateur Television Transmitter

Posted: 27 Jun 2019 09:21 AM PDT
http://www.m0nwk.co.uk/audio-video/s...v-transmitter/


Last year I purchased a Solent 23cm Amateur Television (ATV) transmitter.
Although working, it needed a bit of a tidy up. Whilst tidying things up I
decided to make a few modifications and place the transmitter in a new case
too.

Click the continue button to see more.



This FM analogue video transmitter with 6MHz intercarrier sound and 1W
output was designed by Allan Latham, callsign G8CMQ who ran a company
called Solent Scientific.Â* Worthing repeater group sold kits throughout the
80s and 90s.

More information about the Solent 23CM ATV transmitter can be found on the
BATC site here.
SOLENT AMATEUR TELEVISION (ATV)Â*

The images below show the transmitter as I purchased it.

Front of enclosure showing video and audio inputs and tuning potentiometer:



Rear of enclosure showing N-type panel connector for RF output:



Top cover of enclosure removed:



Inside the enclosu

DISMANTLING THE SOLENT 23CM TRANSMITTER

ToÂ*remove theÂ*Solent 23cm ATV transmitter from the enclosure I firstly
de-soldered the N-type panel connector, BNC connectors for audio and video
and power cable. I then removed the tuning potentiometer, IC and bolts
securing the PCB to the casing.



On inspection I noticed the PCB track that is soldered to the N-type panel
connector centre conductor was damaged.



I decided to replace the N-type panel connector with an SMA male one. Using
a small file I made a slot for the SMA to fit into and soldered it in place.



The potentiometer had a lot of play in the shaft so I replaced this and the
wiring to the PCB. I also replaced audio and video cables with new ones.
After tidying up and cleaning the PCB I soldered the power cable back on.


SOLENT 23CM TRANSMITTER ENCLOSURE

To be contined


Why not take a look at my YouTube channel hereÂ*or Twitter posts here.

You can also register for my website here.

Thanks

73 de M0NWK