AOR AR5000 Bedienerhandbuch PDF herunterladen (Seite 15)

1 spur is present 4.802MHz above carrier frequency at a level of 67dBm (NFM, no other

signals present)

EARLY AR5000 - SSB frequency display accuracy

The very first batch of AR5000 had no specific adjustment for SSB frequency accuracy but

relied on the 10.245 MHz crystal feeding the MC3357D. If a frequency error is detected, it is

fairly easy to REPLACE the 56pF capacitor to ground using a 39pF capacitor and 20pF

trimmer to ground... the SSB frequency accuracy may then be adjusted - refer to the

illustration:

EARLY AR5000 - squelch tail characteristics

The length of squelch tail obtained on the AR5000 is microprocessor controlled and can be

altered by PC via the RS232 port when using the Hyperterminal program.

The following commands are required to do this:-

AR5BA4 (CARRIAGE RETURN)

CMA518 (CARRIAGE RETURN)

00 (CARRIAGE RETURN)

The AR5000 will now have to be re-set by pushing the button behind the brake lever.

This will give a minimum squelch tail but the 00 values can be substituted by any value up to

99 to give a longer squelch tail.

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AOR AR5000 Bedienerhandbuch Seite 15