Ramsey Electronics FX-440 Manual page 35

Using Computer BASIC as a Diode Matrix Programming Aid
The following program was written to calculate the N value for the 2
Meter version of this kit. It is reprinted here as a starting point for you to
see and understand the logic process one would use
i~
writing such
a
program for the 440 MHz band. The program is as CLEAR AND
GENERIC as possible with no concern for programming efficiency or
sophistication. Those who enjoy and understand programming in Basic
can dress it up to suit themselves. Or, they can write
a
program that
satisfies their own standards. A major purpose of the deliberate simplicity
is that the routine should run on virtually any computer using any version
of Basic. If you follow the program flow, you'll see that it carries out in
order the very same steps you would follow by hand in converting
decimal to binary using the FX Programming Worksheet. You can use
this same program for calculating nonstandard Transmitter Offsets.
Program Notes:
1. Install diodes ONLY in rows where ·1 • is indicated.
2. ff you prefer, "O's" can also be generated through the use of
appropriate IF ... THEN ... ELSE fines.
3. The "!" after 32768 is generated automatically by the computer,
whether you type it in or not.
4. Be VERY accurate in typing •
< •
and •
> •
or •
= > •
because they are
critical to correct placement of 1 's.
5. The CLEAR instruction after screen printing is important; if it is
omitted, AA, BB, CC, etc., will not be reset for checking the next
frequency.
6. Innovative computer programs to enhance enjoyment of the FX
transceivers are encouraged; send them to your favorite ham or
computer magazine, newsletter or BBS.
7. LPRINT or equivalent Basic statements can be used to produce
hard-copy printouts of frequency information you need.
8. IMPORTANT: Before soldering ANY diodes in your FX-transceiver
programming matrix per this program, CHECK AND VERIFY that
your program is giving CORRECT results! COMPARE it to the
samples in this book.
NOTICE:
Although this program has been tested on many Microsoft BASIC
releases, including GW Basic, it
is
printed here solely as
a
convenience
and
is
not integral to the Ramsey FX-440 operation.
If
you have trouble
running the program, please get help from
a
local computer friend and
not from the Ramsey factory - we're radio guys, not computer hackers/
FX-440 Ref. 33