Epson Multi-mode Data Controller MFJ-1278B User Manual

If you cannot contact anyone using another frequency, call CQ on one of the above 
mentioned frequencies.  If you do make a contact with someone, then  QSY immediately 
after establishing contact!  Be careful on 20 meters especially that you don't operate +/- 
2KHz around 14.100 MHz (you will cause interference to propagation beacons and give 
packet a bad name...). 

There are a few operating hints which apply to HF Packet.  These few hints are listed below: 

1. 

Try to keep all packets below 80 characters in length. 

2. 

Set MAXFRAME to 1.  This will minimize transmission time. 

3. 

Avoid multiple connections  and  digipeated packet operation. 

4. 

Qsy away from the standard calling frequencies as soon as possible. 

5. 

Set FRACK to a sensible long value. 

For more details on HF packet operation please refer to the next chapter in this instruction 
manual.