Direct Frequency Counter by S53MV


Direct counter TTL/RF/4GHz/
/20GHz prescaler
Inside view
10MHz TCXO/extern switch


Direct Frequency Counter by Ana T.

Direct counter up to 800MHz
using ECL parts
Inside view


Reciprocal Frequency Counter FC-510+ by NSM

Reciprocal counter FC-510+
- front view
Using 10MHz OCXO-GPSDO and
a pasive f*2 - inside view
CPU Unit (PCB by S56FPW)
Using 20MHz VCTCXO for counter
and a f/2 divider for the GPSDO


More FC-510+ documents

20MHz VCTCXO Vfc circuit revision
20MHz VCTCXO R-divider calculation
6GHz Input unit with prescaler