[GreenKeys] MICRODEC MD200

[Greg Miller]

Glad that helped!  I have also found it difficult to find documentation on
these units.  I experimented with mine and here's what I got...

MD100:
Firmware (c) 1989
Mode options are morse, RTTY at 60, 67, 75 and 100 wpm, and 110 or 300 baud
ASCII
Does not have F1 or F2 buttons, only display intensity up and down.
Has an internal rechargeable battery.
Decodes 60 wpm ITTY fine.

MD300:
Firmware (c) 1991
Mode options are morse, RTTY at 60, 67, 75 and 100 wpm, 110 and 300 baud
ASCII, and AM-SITOR
Does have the F1 and F2 buttons.
Also has the R60-I B/D/S options, but won't decode ITTY in any of those
modes.  It *will *decode ITTY when selecting just "60 WPM", however.
The B/D/S modes are also available in 110 and 300 baud ASCII.  No clue
about what the B/D/S options are.
Options for SITOR are A-ARQ F or L, and B-FEC F or L.  I know nothing about
SITOR so I have no idea what any of that means.  Does anyone use SITOR
anymore?
Does not have the internal battery.

Try pressing select until you get to RTTY.  If it doesn't decode ITTY, try
pressing F2 until you see just 60 WPM on the display...

BTW, I did hookup the VIP50 to a monitor and I got a bootup message.
Haven't hooked it to the MD100 or 300 yet to see if it will actually
display the data coming in yet.

73,
G



On Tue, Jan 26, 2021 at 11:28 AM <highpwr at bellsouth.net> wrote:

> Thanks Greg,
>
>
>
> I dloaded it, and its helped  understand it a little better.  The MD200 I
> have there are some submenu setting in RTTY mode,  they work on all speedS,
> I can use the F2 button to select the following IN THE 60 wpm mode:
>
>
>
> R60-I S
>
> R60-I D
>
> R60-I B
>
>
>
> Haven’t figure them out yet, and can cycle between the above items with
> the F2 button but no action under any one of them with other button
> pushes,  (except each buttons normal functions.
>
>
>
>
>
> Per the section in the PNG file attached, and reading old Somerset adds
> the MD200 is often referred to as the MD200 PLUS, mines not marked that way
> but I believe it is one, I think the above submenu items might refer to:
>
>
>
> R60-I S, maybe someway to select Shift
>
>
>
> R60-I D, ??? don’t have a clue.
>
>
>
> R60-I B, possibly the Bandwidth mentioned in the PNG
>
>
>
> Anyway like you no joy in decoding ITTY so far.
>
>
>
> Anybody else know about these things jump in!
>
>
>
> Steve
>
> KM4V
>
>
>
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