Repeaters: range extenders
Vertex VXR-7000
The VXR-7000 series base/repeater station is designed and constructed for mid-power, continuous duty base station and repeater applications.
This unit offers a turnkey solution with a wealth of both standard and optional features for public safety, utilities, private LMR and other two-way licensed users. Operation is available for both VHF and UHF frequencies. Manufactured utilizing state-of-the-art computer aided design and manufacturing processes. The VXR-7000 series is designed for reliable, unattended operation in a variety of installations.
Major features of the unit include models for both VHF and UHF frequency bands, 16 synthesized channels, up to 50 Watts of output power @100 % duty cycle, programmable channel bandwidths, 5-tone and DTMF encode/decode, ANI/ENI ID display, selectable repeater or base transceiver mode and local or remote operation.
Other features include 150 to 174 MHz and 450 to 480 MHz frequency operation (model dependent), 12.5 or 25 kHz bandwidth, programmable by channel, PLL stepping at 2.5/5/6.25 kHz (VHF), 5/6.25 kHz (UHF). 47 CTCSS tones, 104 DCS codes — encode and decode, 5-tone and DTMF encode and decode, community repeater operation (Up to 16 tones/codes), dealer programmed ANI/ENI ID display, dealer programmed CW transmitter ID, dealer programmed Time-out timer, hang timer, guard timer, BCLO and BTLO, selectable repeater or base transceiver mode, selectable local or remote mode, AC power selectable for 115/230 VAC, automatic battery backup capable (requires optional 50 Ahr Battery), and an optional internal duplexer (max 40 Watts).
Specifications at a glance:
RF power out: 10 to 50 W, adjustable
Duty cycle: 100%
Max deviation: ±5.0 kHz (25 kHz spacing), ±2.5 kHz (12.5 kHz spacing)
Modulation Type: 16KOF3E/11 KOFSE
Audio Distortion: Less than 2.5 % @ 1 kHz
Spurious emissions: Better then 75 dB
below carrier
GR300 Desktop Repeater
The compact GR300 repeater is designed to increase the range and capabilities of mobile and portable communications. The repeater has been developed to address and solve special coverage problems quickly, easily and inexpensively. It is a flexible unit designed to meets the frequency bands, power and transmit/receive requirements for a wide variety of applications including public safety, private LMR and others. The unit features a modular design that allows quick field replacement of disabled components. It offers a desktop control point operation since it’s small size allows the repeater to be located in office environments where dispatcher interface is required.
It can also be used for portable applications by adding front and back protective covers and a carrying handle. This makes the unit suitable for a number of portable installations such as jobsite, rental or emergency repeater applications. It supports VHF/UHF crossband operation, which allows UHF and VHF radios users to communicate with each other. And, it offers internal mounting space for additional components such as duplexers, preselectors and battery revert modules. The unit is UL and CSA approved.
Specifications at a glance:
Frequency Range: VHF or UHF
Size (H × W × D): 10.1″ × 7.5″ × 0.4″
Weight: 34 lbs.
Duty Cycle: 25W @ 100%, 40/45W @ 20%
Controller Capacity: 1
Maxon SR-4000
The Maxon SR-4150V(VHF) and SR-4450U(UHF) repeaters are designed for reliable, unattended operation. The units are offered in a compact and lightweight package, and offer models for both single- and multi-user applications. A major feature is ToneLock high-performance decoding for minimizing or eliminating dropouts resulting from weak, fading signals or high modulation signals.
The units also offer Morse code station ID and high-quality audio. The basic models, the SR-4150Vand SR-4450U are assembled without a duplexer while the “DV” and “DU” suffixes include a 6-cavity duplexer. Both units offer a maximum capacity of 50 CTCSS and 104 DCS User groups (total 154 users) and weigh only 19 lbs. Other features of the devices include regenerated CTCSS and DCS codes, the ability to reserve vacant tones and codes and selectable transmitter hold time and courtesy tone. The units come fully assembled for quick and easy installation and setup.
Specifications at a glance:
Frequency range: 150 to 165 MHz or 450 to 470 MHz
Transmit power: 25 Watts
Channel spacing: 25 MHz
Available with or without installed duplexers
