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Icom America - 2 way radios

CY-F121S Series

VHF and UHF Repeaters



Frequency coverage
400-430 MHz
440-490 MHz
Number of channels

Max. 8 channels

(4 channels x 2 banks)

Channel spacing 12.5/25 kHz (narrow/wide)
Antenna connector SO-293 (50Ω)

Power supply voltage

(Negative ground)

13.2V DC nominal [25W]

13.6V DC nominal [50W]

Current drain (approx.)

TX [25W]   7.0A
     [45W] [50W] 13.0A
Max audio   1.2A
Standby   0.3A
Operating temp. range

-30°C to +60°C;

 (-22°F to +140°F)





(Projections not included)

480(W) x 133(H) x 364(D)mm;

18.90”(W) x 5.24”(H) x 14.33”(D)

480(W) x 133(H) x 364(D)mm;

18.90”(W) x 5.24”(H) x 14.33”(D)


8.6 kg; 18 lb. [25W]

8.6 kg; 18 lb. [45W][50W]


RF Output power


25W/10W/2.5W [25W]
50W/25W/4.5W [45W]
50W/25W/5W [50W]
Modulation system

Variable reactance frequency modulation

Max. freq. deviation ±2.5/5.0 kHz (narrow/wide)
Frequency error

IC-F121S ±5.0 ppm

 IC-F221S ±2.5 ppm

Spurious emission 70dB typical
Adjacent channel power 60/70dB (narrow/wide)
Audio freq. response

+2 dB to -8 dB of 6 dB/octave range from: 300 Hz to

 2550/3000 Hz (narrow/wide)

Audio harmonic dist. 3% typ. at 1 kHz, 40% deviation

FM hum and noise

(typ., with CCIT filter)

40 dB (narrow)

46 dB (wide)

Limiting character of


70-100% of max deviation
Microphone connector: 8-pin modular (600Ω)
Receive system

Double-conversion superheterodyne system

Intermediate freq

1st: 46.35 MHz

2nd: 450 kHz

Sensitivity 0.25μV at 12dB SINAD
Squelch sensitivity 0.25μV
Adjacent channel selectivity (typical) 65/75dB (narrow/wide)
Spurious response 75dB
Intermodulation (typ.) 74dB
Hum and Noise (typ.) 40/45dB (narrow/wide)
Audio output power

4W typ. at 10% distortion with a 4Ω load

Ext. SP connector 2-conductor 3.5 (d) mm (18″)/4Ω

All specifications subject to change without notice or obligation.

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