Ultra Compact 477MHz UHF CB Radio with Full-Function LCD Controller Microphone 40-Channel (Upgradable to 80), Pure Sound DSP, Selcall Product Overview The GME TX3340 is an ultra compact 477MHz UHF CB radio with a full-function LCD controller microphone designed to be installed unobtrusively in modern vehicles. The extremely compact radio body can be mounted in virtually any location, with only the LCD controller microphone visible at the operator position. This is the same remote-head approach as GME's black box marine radios, applied to UHF CB for vehicle installations. The TX3340 features the same Pure Sound DSP engine as the TX3100 for clear, digital signal processing. Standard configuration is 40 channels, upgradable to 80 channels. Privacy coding includes 50 in-built CTCSS codes and 104 DCS codes; 5-digit Selcall with quiet mode allows selective individual calling. Australian designed and manufactured. Three-year warranty. Features & Benefits Full-function LCD controller microphone — all controls and display on the microphone; the compact radio body mounts hidden in any location 40-channel standard, upgradable to 80 channels — standard 40-channel UHF CB with upgrade path to full 80-channel operation Pure Sound DSP engine — same Digital Signal Processing as the TX3100; improves received audio clarity and intelligibility 5-digit Selcall with quiet mode — selective calling allows a specific radio to be alerted while others remain in quiet mode on the same channel 50 CTCSS codes and 104 DCS codes — broad privacy code range for filtering out unwanted transmissions on shared channels User adjustable squelch — set the minimum signal level required to open the speaker User selectable priority channel — monitors a designated priority channel while operating on a working channel User selectable duplex channels — configure duplex channel pairs for repeater operation User selectable open and group scan — scan all channels or a user-defined group Australian design and manufacture — designed and made in Australia Three-year warranty Ultra compact body — mounts in tight locations where standard radio heads would not fit Technical Specs Specification Detail Brand GME Part number TX3340 Product type UHF CB radio (fixed mount, ultra compact) Frequency 477MHz Channels 40 standard (upgradable to 80) DSP Pure Sound DSP engine CTCSS codes 50 DCS codes 104 Selcall 5-digit with quiet mode Squelch User adjustable Priority channel User selectable Duplex channels User selectable Scanning Open and group scan (user selectable) Controller Full-function LCD microphone Warranty 3 years Origin Australian design and manufacture Weight Not specified Compatible With / Goes Well With GME UHF CB antennas GME microphone accessories — confirm with GME for TX3340-specific mic accessories Weight Not specified Frequently Asked Questions What does the LCD controller microphone allow in terms of installation? The full-function LCD controller microphone contains all the radio's controls — channel selection, volume, scan, squelch, and settings — plus the display. The radio transceiver body can be mounted anywhere in the vehicle (under the dash, in a console, behind the panel) as it has no user-interface functions on the body itself. Only the microphone is visible at the operator's position. This is ideal for modern vehicles where dash space is limited and a clean, uncluttered appearance is desired. What does "40-channel upgradable to 80 channels" mean? The TX3340 ships as a 40-channel radio covering the standard 40 Australian UHF CB channels. It can be upgraded to 80 channels (the full Australian UHF CB allocation) through a firmware or programming update. Confirm the upgrade process, cost, and requirements with GME or your supplier before purchasing if 80-channel operation is immediately required. What is 5-digit Selcall and quiet mode? Selcall (Selective Calling) is a system that allows one radio to call another specific radio using a unique 5-digit number. When a Selcall is received, the target radio emits an alert tone to notify the operator. Quiet mode keeps the speaker silent until a Selcall matching the radio's own number is received — useful in environments where constant channel monitoring would be disruptive. What is the Pure Sound DSP engine? Pure Sound is GME's branding for their Digital Signal Processing audio technology. DSP processes the received audio digitally to improve voice clarity, reduce noise, and enhance intelligibility — particularly useful in noisy vehicle environments. The TX3340 uses the same DSP engine as the TX3100, GME's reference-quality fixed mount UHF CB radio. What duplex channel operation is available? Duplex channels are channel pairs used with UHF CB repeaters. A repeater receives on one channel and retransmits on a different channel, extending communication range significantly in areas with installed repeater infrastructure. The TX3340's user selectable duplex channels allow configuration for operation through compatible UHF CB repeaters in your area.
