AMERITRON ARB-704 Universal amplifier interface buffer. FT-1000/2000 (MP) 767GX 920 990 747GX. FT-890 840 817 857 897 900. FT-450 950 1200. TS-440 690 450 180 140 950 130 870 2000 50 120 530 430 830 850 940 570 990. ICOM ACC JACK. ICOM ACC 2 JACK. All models of the IC-706 series, 718 7000. The ARB-704 will work with almost any transceiver without the need for a plug-and-play pre-wired cable. The ARB-704 advanced interface is compatible with all common radios and amplifiers even though radios and amplifiers do not have standardized voltages, accessory plugs, or wiring. This interface is designed to work with any amplifier/radio combination. The input is designed to be compatible with any transmitter or transceiver, and the output is compatible with AC control lines or DC positive or negative amplifier control lines having up to 200 Volts peak open circuit voltage and 300 mA of operating current. Why you need the ARB-704. Amplifiers can damage radios if the amplifier has too much relay control voltage, voltage spikes, or excessive current on the relay control line. Such damage often appears as “stuck” or “sticky” transmit relays in exciters or shorted transistors on transmit control lines. In most cases where the radio is damaged, the system transmits normally but the external amplifier stays locked in a “transmit” mode. This prevents receive signals from coming through the amplifier with normal levels whenever the amplifier is in the “ON” or “OPERATE” position. The ARB-704 has many electrical advantages over conventional relay buffer systems. The ARB-704 has no moving parts, switches almost instantaneously. It is noiseless, has very long life, and will not develop dirty contacts. It operates with negative, AC, or positive amplifier relay control lines. It works with any relay voltage(AC, positive or negative) up to 200 peak volts and any relay current up to 300 mA. The ARB-704 is fully compatible with conventional amplifier relay systems. It is especially suited for buffering vacuum relay QSK amplifiers, since the ARB-704 does not affect attack or release times in a deleterious manner. The ARB-704 operates with transmitters or transceivers that pull amplifier control lines to ground, or output a wide range of positive or negative control voltages. The transmitter only switches currents under. 35 milliamperes and very low voltages when using the ARB-704. Measures a super compact 4″ x 1″ x 2. The ARB-704 is supplied with the following. One power connector cord and plug with red wire (+12 Volts) and black wire (negative and ground). Three phono (RCA) cord with connectors on each end. These cables are for relay, ALC and amplifier control lines. GigaParts ships from multiple locations across the USA, so a portion of your order may come from two different warehouses. Modified radios do not qualify for direct replacement unless GigaParts performed the modification. Is a full service computer and amateur radio store. Our PC department stocks the latest components for upgrading your PC, building your own PC, or having us build one for you. Our Radio department features the latest products from manufacturers such as Alinco, Icom, Kenwood®, Yaesu, MFJ, Diamond, and many more. Whether you’re a DX’er looking for the latest HF rig or a soon-to-be-HAM looking for study materials and a two-meter handie talkie, we have what you need! We look forward to adding you to our long list of satisfied customers. You may also be interested in.. View more great items. The item “AMERITRON ARB-704 Universal amplifier interface buffer” is in sale since Monday, October 19, 2015. This item is in the category “Consumer Electronics\Radio Communication\Ham, Amateur Radio\Other Ham Radio Equipment”. The seller is “gigaparts” and is located in United States. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.
- Features: Compact and Lightweight Design
- MPN: ARB-704
- To Fit: Ham Radio Transceiver
- Compatible Brand: Universal
- Brand: AMERITRON
- Type: Cables & Adaptors