VHF 80MHz-160MHz Frequency Counter 4s6ggs

1. VHF 80MHz-160MHz Frequency
Counter
4S6GGS
In My design use LC7265 and presaler LB3500
www.4s5gs.gayan@gmail.com

2. VHF 80MHz-160MHz Frequency Counter
In My design use LC7265 and LB3500 prescaler
Display Range High order 1 digit zero blank and static lighting system.
50 KHz step /FM 5 digits
Covers intermediate frequencies +10.7, +10.725, +10.750, +10.675 / -10.700, -10.725,
-10.675, -10.650
In put voltage 100mV – 600mV rms
Input frequency 80MHz – 175MHz VHF Range
LED DISPLAY Wiring Diagram
2 x 1 character 7 segment, decimal points right / 15-mm 2 character 7 segments, decimal point right
4S6GGS – Gayan E mail – 4s5gs.gayan@gmail.com

3. VHF 80MHz-160MHz Frequency Counter
FM IF select
FIF1 (11pin) 0 0 0 0 1 1 1 1
FIF2 (12pin) 0 0 1 1 0 0 1 1
FIF3 (13pin) 0 1 0 1 0 1 0 1
IF (MHz) +10.700 +10.725 +10.675 +10.750 –10.700 –10.725 –10.675 –10.650
4S6GGS – Gayan E mail – 4s5gs.gayan@gmail.com

4. VHF 80MHz-160MHz Frequency Counter
4S6GGS – Gayan E mail – 4s5gs.gayan@gmail.com

5. VHF 80MHz-160MHz Frequency Counter
PCB
H x 45.53mm W x 55.1mm
4S6GGS – Gayan E mail – 4s5gs.gayan@gmail.com

6. VHF 80MHz-160MHz Frequency Counter
C1 –C5 - 10uF R1 – 4.7k U1-LC7265
C2 - C4 - 22p X Tal – 7.2MHz U2 – LB3500
C3 – 0.01uF L1 – 10uH U3 – LM7805
C6-C7-C11 – 0.001uF C9-C10 – 100p
C8- 68p
4S6GGS – Gayan E mail – 4s5gs.gayan@gmail.com

7. VHF 80MHz-160MHz Frequency Counter
4S6GGS – Gayan E mail – 4s5gs.gayan@gmail.com

8. VHF 80MHz-160MHz Frequency Counter
4S6GGS – Gayan E mail – 4s5gs.gayan@gmail.com