answering someone else’s CQ, you need to make sure you are one the correct
frequency.
There are actually TWO frequencies where you can hear another station and have the
CW LED flashing and the decoder happily operating. For example, if the other station is
transmitting at 7.03 MHz, you can tune them in at 1300 Hz higher or lower, or 7.031300
MHz or 7.028700 MHz. Just to keep things sane, we subtract 1300 Hz from the
receiver frequency, so it shows 7.03 MHz when tuned to a 7.03 MHz station with a 1300
Hz tone, but you can also tune the station 2600 Hz higher, at 7.032600 MHz and get the
same tone. Sound complicated? Well, OK. So just follow the Tuning Rule.
8. The Tuning Rule
1. If you made the call and someone answered, skip this - no rule required.
2. If you want to answer a call: If increasing your frequency one step makes the
received tone go DOWN in frequency, skip this.
3. If the tone went up, Press the D key to drop down 2600 Hz, and adjust your
frequency slightly to receive the other station accurately (make sure you are within the
decoding frequency bounds).
Experiment with this process by tuning in stations, then applying the Tuning Rule.
9. Getting it Right
Learning the ropes is a slow process. The best way to become comfortable with the
process is to practice. Practice practice practice! There are two major areas to
practice:
1. Operating the DMX-40: This is the easy part. Use the DMX-40 Reference Manual.
There is so much more the DMX-40 can do we have not touched on."
2. Tuning and Doing QSO’s: This is harder, because there is much to learn: what
are the best frequencies to use? What is the best time of day to operate? How to
identify different styles of operation? How to establish your own style? How to use
microprogramming to support your own style? This is the more time-consuming
part, but especially if you are a prepper, do it NOW, and do it FREQUENTLY so if
the S does HTF, you will be comfortable operating your communications safety net!!
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