Download the IC-F521/IC-F621 brochure.

Dimensions: 5.5 (W), 1.6 (H), 6.7 (D); 2 lb, 10 oz
25 W output power on IC-F520 version OR 50 W on IC-F521version
4 W audio output
136-174 MHz
256 channels in 16 Memory Banks
SIGNALING
CTCSS, DTCS encode/decode standard
Built-in 2 tone
DTMF ANI with UT-108
TRUNKING
SmarTrunkII® optional
LTR® optional
9 programmable buttons
Independent AF volume knob
10 character alphanumeric LCD
Invertible chassis to point the speaker up or down, for ease of installation
Backlit keys
Flash CPU advantage for future applications
Fractional-N PLL provides faster lock up times
Power on password and 'stun' features  (prevents use of a lost or stolen radio)
Microphone hanger function
Normal/priority scan
Built-in audio compander
DTMF optional (HM-100TN required), DTMF redial and DTMF autodial
MIL SPEC 810 C, D, E, F   

OPTIONS:
OPC-617 - ACC Cable for external terminal connection - $54.95
HM-100TN - Hand/DTMF Microphone - $74.95
SM-25 - Desktop Microphone - $149.95
SP-10 - External Speaker - $79.95
UT-105 - SmarTrunkII Logic Board - Email for Price
UT-108 - DTMF Decoder Unit - Email for Price
UT-109 - Voice Inversion Scrambler - $89.95
UT-110 - Rolling Code Scrambler. Up to 1020 codes - $169.95
UT-111 - LTR Trunking Unit - Email for Price
*LTR is a registered trademark of EF Johnson Radio Systems.*