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Forum: The Radio Room

11th June 2017, 13:05

Replies: 40

Radio room photos

Views: 14,148

Posted By Wismajorvik

My experience was in the middle east and with...

My experience was in the middle east and with both frequency diversity and antenna ( billboards) diversity Systems were reliable for better than 99.9% of the time.

Forum: The Radio Room

6th June 2017, 11:18

Replies: 40

Radio room photos

Views: 14,148

Posted By Wismajorvik

Not much experience with the PSTN but would...

Not much experience with the PSTN but would assume that between exchanges multiplexed narrow band fm would have been used. Nowadays if telex was required then time division multiplex would be the...

Forum: The Radio Room

6th June 2017, 01:11

Replies: 40

Radio room photos

Views: 14,148

Posted By Wismajorvik

http://alancordwell.co.uk/Legacy/hfradio/dwsint.ht...

http://alancordwell.co.uk/Legacy/hfradio/dwsint.html
Information on one of the piccolo systems possibly around mid 60s. There were variations later and also an earlier basic system which I recall...

Forum: The Radio Room

5th June 2017, 23:22

Replies: 40

Radio room photos

Views: 14,148

Posted By Wismajorvik

I believe Lincompex was a GPO design and the kit...

I believe Lincompex was a GPO design and the kit was manufactured under licence by several companies. I attended the STC factory in Newport Wales where it was being produced. Piccolo was developed by...

Forum: The Radio Room

5th June 2017, 12:57

Replies: 40

Radio room photos

Views: 14,148

Posted By Wismajorvik

I have a vague recollection of Lincompex being...

I have a vague recollection of Lincompex being installed on noisy landlines by Hughes in Saudi Arabia...anything for that extra buck.

Forum: The Radio Room

3rd June 2017, 15:39

Replies: 40

Radio room photos

Views: 14,148

Posted By Wismajorvik

10kw klystrons, 800Mhz, water cooled....what...

10kw klystrons, 800Mhz, water cooled....what memories

Forum: The Radio Room

2nd June 2017, 17:52

Replies: 40

Radio room photos

Views: 14,148

Posted By Wismajorvik

Lincompex was used primarily on point to point HF...

Lincompex was used primarily on point to point HF circuits. At the TX end audio was split in two paths, one path was amplified to nearly a constant level, the sybillic rate used to frequency...

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