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SSB Electronic GmbH Parts and Accessories
SSB Electronic Mast-Mount Preamplifiers
SSB Electronic Mast-Mount Preamplifiers are low-noise, band-specific, weatherproof preamplifiers designed for installation near VHF and UHF antennas. Available for the 6 meter, 4 meter (Europe), 2 meter and 70 cm Amateur bands, these preamplifiers are installed in-line, at the antenna. They improve receive performance by amplifying weak signals before feedline loss can reduce them. Powering and Sequencing Most models can be powered remotely through the coaxial cable, and many modern transceivers include a built-in bias-tee for mast-mounted preamplifiers. If the transceiver or transverter system does not provide power, an external bias-tee or remote-feed unit is required. • The DCW-15 and DCW 2004B provide sequencing support. • The DCC-12 does not provide sequencing. • SP series preamplifiers include a built-in RF VOX circuit for safe operations up to 100 watts; for transmit power above 100 watts, PTT control with a sequencer is required. Some models require a direct DC connection (UHF female). • -S series preamplifiers feature lower current signal relays with slightly higher insertion loss. • MHP and MHP-S series preamplifiers versions require sequencer control (see below). Signal Filtering and Switching Built-in helix filters effectively reject out-of-band signals, helping maintain clean receive performance. Real coaxial relays handle transmit/receive switching, resulting in very low insertion loss (except for SP-S series). And each amplifier is carefully calibrated at multiple test stations before packaging. Dual-Band Models Dual-band models include built-in diplexers, so they require only one connection for the multiband antenna and one connection for the station coaxial cable. MHP Series for Demanding Stations The MHP series is designed for demanding operating environments and provides higher gain for weak-signal modes such as Tropo-DX and EME. With maximum transmit power handling of 1500 watts on 6m and 2000 watts on 2m and 70cm, these preamplifiers are well suited for contesting, DX, and EME operation. Important Note for MHP Models Bias-tee power (on the RF coax) is not supported in most MHP Preamplifiers. They must be powered directly using the appropriate cable size for the required distance, and they may only be operated with a correctly wired sequencer, such as the DCW 2004 B Sequence Controller. Transmitting high power without a directly wired sequencer is likely to damage the MHP preamplifier. Housing and Hardware All SSB Electronic Mast-Mount Preamplifiers are supplied in UV-resistant, weatherproof housings with Type N female connectors. Hot-dip galvanized clamps and stainless steel mounting hardware are included. See individual models for band coverage and detailed specifications.
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$770.99
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$965.99
SSB Electronic AS-304 Four Port Mast Mount Antenna Switch
SSB Electronic AS-304 Four Port Mast Mount Antenna Switch can be used on all frequencies up to 600 MHz and is electrically operated using a control cable and an optional control console. The weatherproof housing allows the mast-mounted switch to be installed as close to the antennas as possible with the connectors facing downward to keep connections dry. Equipped with heavy duty relays, the AS-304 is recommended for a variety of tasks due to its wide frequency coverage, low insertion loss and high power capability. Ratings are dependent upon the selected connector version, UHF or Type-N, as detailed below. The control of the AS-304 provides a no-voltage default selection of Antenna 1, with 13.8 VDC applied to one of three pins of the chassis 4-pin DIN connector to select Antennas 2, 3 and 4, with the fourth pin ground. The mating connector is supplied for the user supplied four conductor control cable. This type of 1-of-3 antenna port selection is handled with the optional DXE-CC-4 Four Position Control Console featuring a large rotary switch and 4 indicator LEDs, or with another third-party control device, or a user supplied rotary switch. Technical Data for the SSB Electronic AS-304 4 Port Mast Mount Antenna Switch - Frequency range: DC – 600 MHz - Antenna ports: 4 - Insertion loss: < 0.2 dB up to 500 MHz - Standing Wave Ratio: <1.2 : 1 - RF Power Handling for AS-304 UHF (SO-239) Connectors: Up to 30 MHz: 1.5 KW PEP/1 kW CW/500W Digital 144 MHz: 1 KW PEP/500W CW/250W Digital 432 MHz: 600 W PEP/300W CW/150W Digital RF Power Handling for AS-304 N (Type-N) Connectors: Up to 30 MHz: 800 W PEP/400 W CW/200W Digital 144 MHz: 800 W PEP/400 W CW/200W Digital 432 MHz: 600 W PEP/300W CW/150W Digital - Relay Power: 12 -14 V at 80mA max. - Mast diameter, max.: 2.283 in. (58 mm)
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$859.99