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Old 15th Aug 2008, 9:00 pm   #1
Alan Stepney
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Default 2 metre transmitter

This is the first 2 metre transmitter I built, between 40 and 45 years ago.
Stored for many years in the attick, I came across it last weekend.

It is a conventional tx for the period, and I believe the design came from "the Bull" as Radcom was then known, or the RSGB handbook.

Using 8.+ mc/s crystals, multiplied up to 144mc/s, and then into the PA which is, or was, a QQV06-40a. As can be seen, it has suffered some damage during transit. Modulation was via 2x 2B254M's.

As the output is AM, and quite wide band at that, I doubt it will get used again, but one member of this forum who saw it found it interesting, so I thought that others may do too.

http://img.photobucket.com/albums/v1...ara2/P0053.jpg

http://img.photobucket.com/albums/v1...ara2/P0051.jpg

http://img.photobucket.com/albums/v1...ara2/P0054.jpg
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Old 15th Aug 2008, 9:04 pm   #2
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Default Re: 2 metre transmitter

Very nice Alan. To my mind Amateur Radio should be all about building your own gear. However these days I have to be content with restoring vintage gear. Valve based of course.
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Old 15th Aug 2008, 10:14 pm   #3
Brian R Pateman
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Default Re: 2 metre transmitter

I could not agree more with Graham's comments above.

A good build standard of which you can be proud.

This is what it's all about. I have a couple or three projects of similar nature from Radio Constructor in mind to while away the dark evenings of the next few winters.

Regards,
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Old 16th Aug 2008, 9:12 pm   #4
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Default Re: 2 metre transmitter

Does it have the smell?
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Old 17th Aug 2008, 10:03 pm   #5
Alan Stepney
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Default Re: 2 metre transmitter

Thanks for the comments.
I might just find its power supply, a spare PA, and fire it up.

Assuming that it works OK, I doubt I would use it much. It was always the building that interested me more than the working.

Oh, no smell.
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Old 18th Aug 2008, 1:46 pm   #6
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Default Re: 2 metre transmitter

I've moved some posts relating to AM operation to a new thread here:-

https://www.vintage-radio.net/forum/...ad.php?t=31360
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