RDDS Supplied pre - programmed PIC V2 frequencies and applications

 

You can change pre-programmed frequencies as required using 2400 baud RS232

 

CON 1 Jumpers

F0

F1

F2

F3

Pre Programmed Frequency

 

 

Frequency

RB4 - J9

RB5 - J7

RB6 - J5

RB7 - J3

XTAL MHz

Multiplication

Application

0

0

0

0

0

96.00000

12

23cms 144MHz IF

1

1

0

0

0

120.88889

18

13cms 144MHz IF

2

0

1

0

0

135.66667

24

9cms 144MHz IF

3

1

1

0

0

117.00000

48

6cms 144MHz IF

4

0

0

1

0

106.50000

96

3cms 144MHz IF

5

1

0

1

0

124.50000

192

24GHz 144MHz IF

6

0

1

1

0

122.25000

384

47GHz 144MHz IF

7

1

1

1

0

98.73958

768

76GHz 144MHz IF

8

0

0

0

1

123.66667

24

9cms 432MHz IF

9

1

0

0

1

111.00000

48

6Cms 432MHz IF

A

0

1

0

1

103.50000

96

3cms 432MHz IF

B

1

1

0

1

123.00000

192

24GHz 432MHz IF

C

0

0

1

1

121.50000

384

47GHz 432MHz IF

D

1

0

1

1

98.36458

768

76GHz 432MHz IF

E

0

1

1

1

105.6667

12

23cm 28MHz IF

F

1

1

1

1

124.50000

192

24GHz 144MHz IF

Link Fitted = 0

 

No link = 1

 

 

You can change any of these above using RS232

 

 

 

For Beacon application, an example. Connect an external TTL keyer to F0/RB4 - J9 and enter your mark and space Hex for required frequencies into CON 1 frequency locations E & F. If the keying is inverted/reversed swap the Hex entries in E & F. Additional CW tones are possible using F0,F1,F2,F3. 16 max.