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Last modified 2023-01-30

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Drake TR-270

A picture of Drake TR-270

SPECIFICATIONS

GENERAL
Type:Amateur VHF transceiver
Frequency range: TX: 144-148 MHz
RX: 142-150 MHz (Receiver A)
RX: 136-174 / 420-470 MHz (Receiver B)
Tuning steps:5 / 10 / 12.5 / 15 / 20 / 25 KHz, 1 MHz
Frequency stability:±5 ppm @ 0 to 40°C (32 to 104°F)
±10 ppm @ -10 to +50°C (14 to 122°F)
Mode:FM
Channels / memory management: 100 regular (Receiver A)
100 regular (Receiver B)
100 SAT mode
100 WXSAT mode
Repeater shift / offset:±600 KHz (Programmable)
Power supply:Mains: 115 / 230 VAC (3-pin IEC C14 connector)
or 11-16 VDC (4-pin connector)
Current drain / power consumption:RX: Max 1.2 A @ 13.8 VDC
TX: Max 8 A @ 13.8 VDC
Antenna impedance / connector:50 ohm / Two SO-239
Dimensions (W*H*D):279*121*343 mm (11*4.75*13.5")
Weight:5.9 Kg (13 lb)
Other features: CTCSS/PL and DTMF encoding/decoding. 9K6 packet ready.
RS-232C.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 10.7 MHz (Receiver A) - 18 MHz (Receiver B)
2nd IF: 455 KHz
Sensitivity: Receiver A: 0.18 uV (12 dB SINAD)
Receiver B: 0.25 uV (12 dB SINAD)
Selectivity: Receiver A: 12 KHz (-6 dB)
Receiver B: 15 or 40 KHz (-6 dB), selectable
Image rejection:
AF output power / speaker:2 W at 5% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm




TRANSMITTER SECTION
RF output power:

HighMidLow
2 m:25 W10 W1 W
Modulation system:
Max FM deviation (Factory set):±5 KHz
Spurious emissions:Better than -60 dBc
Microphone impedance / connector:500 ohm / 4-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:USA, 1997-199x (Discontinued)
Additional info:
Related documents:User manual (752 KB)
Modifications and fixes:
Reviews:
Options / Accessories:
DEMOD-270
TNC-270
AM/FM demodulater card
Plug-in packet TNC