On Feb 27, 1996 at 16:16, Bob Lawrence of 3:711/934.12 wrote:

 DB>> What *exactly* do these lines tell us, hmmm?
 BL>
 BL> From Bill's other line data, it seems that the NetComm has a much
 BL> lower transmit level than the Courier, and that it tries for a higher
 BL> carrier frequency at the same time.

The default transmit level for the M34F is -13dBm, and it can be
"legally" set (with "AT%L") to anywhere from -11dBm to
-19dBm.  There's an undocumented command ("AT#T") that will
permit higher transmit levels.  I tried -9dBm in a call to Dave Hatch, but
it made no difference.  A call to David Drummond, however, resulted in ..
ta-da!  A 28.8Kbps connection (with full EC/compr).

Dropping the transmit level back to -11dBm resulted in a 26.4Kbps
connection to the same site (DD).  I even managed to get 21.6Kbps on a call
to Poe (using -9dBm), despite the fact that the last few times I tried I
could only manage 19.2Kbps (using -13dBm, the default).

I think we've really hit on something here...

Cheers..


    - dave
    d.begley{at}ieee.org

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