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echo: hs_modems
to: RICHARD TOWN
from: MIKE FARRILL
date: 1997-06-28 12:15:00
subject: Init Strings

-> -=> Quoting MIKE FARRILL to DAVID BOWERMAN <=-
->
-> MF> Oh, I'll try it out...  I messed with S91 (which I think sets how
-> MF> strong a resistor is inside my modem) lower and I got higher spee
-> MF> stronger long distance signals.
->
-> S91 is the transmit level adjust (s92 for fax transmit level)
-> No matter what you set it at lower than =10 it won't transmit
-> at a higher level than -10dbm (default)  This setting will go
-> as low as =15 (-15dbm) but wont go any lower.  I find =12 the
-> best setting.  This can avoid the exchange's AGC amp acting.
It also lowered my connection speeds up to 4800 baud.  And I called up
USR's Line test number and I got better results when I set it to 6 or
below.
-> Basic Rockwell-oids either couldn't access these registers
-> or they could only be set on a per call basis (reverting to
-> default when modem is re-initialised)
->
-> These settings are useful if you've had your local exchange
-> line AGC setting switched off, otherwise the AGC amp there
-> will just re-adjust your line's input level.  You want as far
-> as possible for the two modems in the link to make their own
-> AGC adjustments, not the slow acting exchange amps
what do AGC amps do that is so terrible?
--- Platinum Xpress/386/Wildcat! v1.3
---------------
* Origin: MADDOG! BBS : (510) 895-8089 : San Leandro, Ca. (1:215/13)

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