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Last modified 2024-07-26

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Helmholt Elektronik - RTTY-CW Interface Mark 5S

A picture of Helmholt Elektronik - RTTY-CW Interface Mark 5S

SPECIFICATIONS

GENERAL
Type:Amateur multi-mode interface/modem
CPU:No
System ROM:No
System RAM:No
Computer ports / Speed:Commodore user port
Power supply:Mains: 220 VAC
Current drain / power consumption:Less than 5 W
Dimensions (W*H*D):178*54*193 mm (7*2.1*7.6")
Weight:810 g (1.8 lb)
Other features:170 / 425 / 850 Hz shift




RADIO COMM'S SECTION
Modes: RTTY
CW
ASCII
GPS / APRS functions:No
Mailbox:No
Radio ports: 1 (Separate jacks for input/output)
Data rate over radio
(With original software):
ASCII: 110 / 300 baud
RTTY: 45 / 50 / 57 / 75 baud
CW: 5-99 WPM




MISCELLANEOUS
Manufactured:Denmark, 1984-198x (Discontinued)
Additional info: Primarily designed for the well known Commodore C64 and VIC20 home
computer series, where it is connected via the user port.

New price 1985 in Denmark: DKR 995,-
Related documents: User manual (3.7 MB, in danish)
Differential 4-channel mux/demux: TC4052
Quad op-amp: LM 324
Modifications and fixes:
Reviews:
Options / Accessories:
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An inside picture of Helmholt Interface Mark 5S A rear picture of Helmholt Interface Mark 5S