unknown thingabob

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speeddemon

unknown thingabob

Post by speeddemon » 07 Nov 2017, 14:37

Hello to all anyone seen or know what this is.? And know what it does. ? :ugeek: Found this while surfing on fleabay
Last edited by speeddemon on 07 Nov 2017, 18:04, edited 1 time in total.

g7kxm
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Re: unknown thingabob

Post by g7kxm » 07 Nov 2017, 14:46

Googled HTB AF9 and came up with http://f6aoj.ao-journal.com/crbst_445.html
Looks like something to do with RTTY from the 1970's.

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kilimax
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Re: unknown thingabob

Post by kilimax » 07 Nov 2017, 16:14

speeddemon wrote:
07 Nov 2017, 14:37
Hello to all anyone seen or know what this is.? And know what it does. ? :ugeek: Found this on while surfing fleabay
As g7kxm says, it is indeed to do with RTTY. It's a modem.
The left hand switch selects the shift frequency. You see the common ones are highlighted. The two LEDs marked M & S stand for mark and space. You adjust the RTTY signal so that both LEDs flash together.
The normal and reverse switch is to reverse the frequency of the RTTY signal depending on the TX signal.
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I've changed radios that many times, I've forgotten what I have :think:

speeddemon

Re: unknown thingabob

Post by speeddemon » 07 Nov 2017, 18:03

Hi guys thanks for your replys I never seen or hear of it before tys for information :thumbup: if anyone is interested in it. :ugeek: its on fleabay.it ..cheers n 73's

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