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The 1.25-meter, 220 MHz or 222 MHz band is a portion of the VHF radio spectrum internationally allocated for amateur radio use on a primary basis in ITU Region 2, and it comprises frequencies from 220 MHz to 225 MHz. [1]
The (American version) radio's main receiver covers 30 kHz through 60 MHz, 142 MHz through 152 MHz, and 420 through 450 MHz (plus 1240 through 1300 MHz with the "X" model). The sub-receiver tunes between 118 and 174 MHz, and from 220 to 512 MHz (VFO ranges).
It is a quad-band transceiver, capable of transmitting and receiving on the 50 MHz , 220 MHz (1.25 meters), 144 MHz & 440 MHz (70 centimeters) bands. It also features a general-coverage receiver, meaning it can operate as a receiver on many additional bands.
The ML-2 “Marker Luxury” was a crystal controlled FM transceiver for the 2-meter (144 MHz) band. The TR-22, TR-22C, and TR-33 were very small 2-meter FM transceivers that were entirely self-contained, including a telescoping antenna and rechargeable battery. They each came with a microphone and carrying case with shoulder strap.
The first ten transceivers Swan produced were serial numbered from 101-1 to 110-1, with the first nine being model SW-120 operating on 20 meters (14 MHz), and the tenth, 110-1, being the first SW-140, operating on 40 meters (7 MHz). The SW-175 then covered the 75 meter band (3.8 MHz).
Frequency (MHz) Program Transmitter site Time, UTC Days Language Power (kW) Az Remarks 3.965 Radio France Internationale (DRM) Issoudun 01:00-00:57 1234567 French (Digital) 1 ND RFI 3.975 6160 Shortwave AM Radio Winsen 16:00-18:00 .234567 English 1 ND 3.985 SRF Schweizer Radio Kall-Krekel 16:00-17:00 1234567 German 1 ND 3.995 HCJB Deutsch
VHF 137-156 MHz land mobile; VHF 156-174 MHz maritime; UHF 225-512 MHz military/homeland defense; UHF 806-824, 851-869, 869-902, 935-941 MHz public safety bands; Continuous Tone-Coded Squelch System (CTCSS), used by many public safety agencies, is available above 400 MHz and below 88 MHz. [6] The transceiver weighs about 12.2 lb (5.53 kg).
Both services use FM mode only. Per Thai law, 78 MHz transceivers must have a yellow case. 245 MHz transceivers must have a red case. The HF (26 – 27 MHz band) CB service is not allowed in Thailand. 78 MHz takes the place of traditional 27 MHz CB for truckers, etc.
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