Aftermarket Generate Amplifier Ifr 500 1200 1200a 1200s Super-s Service Monitor

US $8900

Dixon, California, United States
Jun 22nd

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I designed and built these amplifiers to be used with the IFR 500, 1200, 1200A, 1200S and 1200 Super-S service monitors to amplify the -20 dBm generate level to +10 dBm or more. They are similar to IFR's “Option 5” 30 dB Generate Amplifier, which was a very useful amplifier but is becoming hard to find. This amplifier does not have the internal relay and receiver port connection of the Option 5 factory amplifier, which was used to connect the amplifier output port to the monitor's receiver port during receive mode operation. It is a straight generate amplifier that will allow you to key and test distant repeaters using an outside antenna. It is also useful for tuning filters, especially deep notch filters that require more than the standard generator provides. Like IFR's Option 5, it plugs into the generate output port and power jack on the service monitor and amplifies the generated signal by about 30 dB, giving an output of approximately +12 dBm at 50 MHz and decreasing slightly to about +10 dBm at 700 MHz and further decreasing to about +8 dBm at 1000 MHz (See "S21" gain plot in the pictures). It uses two off-the-shelf microwave gain block amplifier ICs that, like all of the parts, are easily replaceable with minimal SMT soldering skills. The DC power input is fused to protect the service monitor from damage in the event of an internal failure of the amplifier. The housing is rugged aluminum that is gold Alodined. Full documentation is included, including parts list. Schematic, parts list, and network analyzer plots are included in the images in this ad. All parts are available from Digi-Key and other sources. Warranty I will repair or replace any defective units at no charge within 1 year of purchase if you call or email me first before shipping the amp to me. For non-warranty repairs (keyed-into, etc) I will be happy to repair the amplifier for a flat fee of $20 plus return shipping. Even if the unit is not defective, I will be happy to buy it back for any reason if you return it to me within 30 days, even if you simply decide you didn't need it after all or that it doesn't do what you wanted. I want you to be happy with your purchase. Specifications Supply: 11-13VDC at about 120 mA Gain: About 32 dB (see S21 gain plot) P1dB (1 dB compression point): +17 dBm Freq. Range: 10-1000 MHz Size: 2" x 2" (not including connectors) Shipping Please note that I will only ship to U.S. addresses, using USPS Priority mail. I don't mind shipping to the eBay international shipping center that is in the U.S., because that is still shipping within the U.S. I do not know what it will cost you to use the eBay international shipping center, so please don't be mad at me or give me negative feedback because you are not happy with the cost of that shipping option, because I have no control over it. Thanks for looking! Please email me with any questions. Steve Dold (W6KCS) Dixon CA