Codan Radio Communications VT-3H040-S-HSO User Manual

Enhanced FM Synthesizer Instruction Manual
IM10-OS3AH

29-71.4 MHz - General Information

Type: 

Narrow band FM, Single loop synthesizer module utilizing low noise VCO 
and PLL technology. Compatible with Daniels MT-3 series Transmitter and 
Receiver modules.

Frequency Range (Tuning range with no adjustment is shown in [ ] brackets.):

29 MHz-38 MHz [±0.5 MHz] (OST-3H035)
38 MHz -50 MHz [±1.0 MHz] (OST-3H045)
50.4 MHz-71.4 MHz [±1.0 MHz] (OSR-3H061)

Output Power: 

+5 dBm ±2 dBm into 50Ω

Harmonics: <-30 

dBc

Spurious: <-90 

dBc

Hum and Noise: 

-55 dB

Modulation Sensitivity: 

3.0 kHz peak deviation (400 mVrms input)

External Reference Input: 

External reference input signal via SMB connector J1
Input level 0 dBm ±3 dB
Input impedance 50
Input frequency 10.0 MHz or 9.6 MHz (selectable through
digital board jumper JU1)

Power Requirements: 

Normal Confi guration:
+9.5 Vdc @ 160 mA 
Low Current Standby Mode (TCXO enabled):
+9.5 Vdc @ 14 mA

To expedite troubleshooting and maintenance procedures, Daniels Electronics Ltd. has adopted 
a printed circuit board (PCB) numbering convention in which the last two digits of the circuit board 
number represent the circuit board version. All PCB’s manufactured by Daniels Electronics Ltd. are 
identifi ed by one of the following numbering conventions:

PCB number 

43-912010 

indicates circuit board version 1.0

PCB number 

50002-02 

indicates circuit board version 2 (no decimal version)