[GreenKeys] HAL ST-8000

[William Wuttke]

Paul,

The ST-8000 is probably the “Cadillac” TU. It is more sensitive, has lower noise floor, has variable input bandwidth, has more demod modes, has real regeneration including to/from ASCII and differing baud rates (has a buffer), has 8 memories for mark/space/baud rate settings, has adjustable print/LOS squelch, & more. The ST-8000A filter, mod, demod, & control circuitry is VERY similar to the ST-8000, but the “bells & whistles” were left out. The ST-8000A was made as a drop-in replacement for the Frederick 1280A modem. In normal “Greenkeys” use, I don’t think all those extra features do a whole lot for you, though. From what I understand, the ST-8000 is rare nowadays, and brings a premium price (I paid $300 for mine).

73,
Bill
KE3BK



> On Apr 4, 2020, at 11:48 AM, Paul Heller <paul0926 at comcast.net> wrote:
> 
> Since today seems to be the day for talking about eBay items, I’m watching this one:
> 
> https://www.ebay.com/itm/HAL-ST-8000-Ham-Radio-Communications-FSK-RTTY--HF-Modem-ST8000-TX-RX/324117605178 <https://www.ebay.com/itm/HAL-ST-8000-Ham-Radio-Communications-FSK-RTTY-Teletype-HF-Modem-ST8000-TX-RX/324117605178?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D225080%26meid%3Db803a97c3b5642ea9f54a5480fb43f1f%26pid%3D100675%26rk%3D1%26rkt%3D15%26mehot%3Dnone%26sd%3D324117605178%26itm%3D324117605178%26pmt%3D0%26noa%3D1%26pg%3D2380057&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A26314a9b-76a4-11ea-9c23-74dbd180f7c6%7Cparentrq%3A468117841710ac3d2f91d517fff7b922%7Ciid%3A1>
> 
> I am not bidding and will not, but was curious to see if anyone has experience with this particular unit. Price seems to be getting up there. Is it rare or special? 
> 
> I’m using the ST8000A for ITTY and it is a very different looking device 
> 
> Paul
> W2TTY
> 
> ITTY:			HTTP://INTERNET-TTY.NET:8000/ITTY <http://internet-tty.net:8000/ITTY>
> ITTY100:		HTTP://INTERNET-TTY.NET:8010/ITTY100 <http://internet-tty.net:8040/EUROPE>
> AUTOSTART: HTTP://INTERNET-TTY.NET:8030/AUTOSTART <http://internet-tty.net:8030/AUTOSTART>
> EUROPE:		HTTP://INTERNET-TTY.NET:8040/EUROPE <http://internet-tty.net:8040/EUROPE>______________________________________________________________
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