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75W Spectrian Linear RF Amplifier Board 2.3-2.35 GHz 18dBg 24/26V For Sale


75W Spectrian Linear RF Amplifier Board 2.3-2.35 GHz 18dBg 24/26V
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75W Spectrian Linear RF Amplifier Board 2.3-2.35 GHz 18dBg 24/26V:
$99.00

75W Spectrian Linear RF Amplifier Board 2.3-2.35 GHz 18dBg 24/26V

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Click to View Image Album This is a 75W linear amplifier board as removed from a new Spectrian power amplifier which is optimized for 2.30-2.35GHz but is also useful up to 2.45GHz at reduced power an gain. This amplifier board does not require any tuning for use on the ham band! Required supply voltage is 24-26Vdc at about 17A. Input drive required for 75W output power is 1.25W. Power gain is 18dB. Saturated power is 80W+. This is the final Rev. for this board design (Rev A)which has larger plated through holes and the holes have been sealed so the silicon grease does not come through the top side when bolting the board down to the heat-sink. The earlier rev. were all number revs with open vias.I sell the older \"number rev boards\" at a lower price on other sales.The sweep photo shows one of these amps putting out 80W with about one watt input at 2304GHz. The output (CH1) reference is set for 100W (50dBm)with a scale factor of 5dBm/division. Channel 2 is the input power with it\'s reference set for 10W (40dBm)with 5dBm/division.Sweep is from 2.2-2.6GHz with 50MHz/ division.Looking at the output plot you will see the level 1dB down from 50dBm or 80 Watts and the input 9.4dBm down 40 = 30.6dBm, slightly over one watt. Looking at 2450 MHz you can see the output is down 4dB form 50 - 46dBm = 40W. Note the preamp I am driving this PA with is not linear with frequency over this full range as indicated by channel 2.Circuit board is on an integral .062\" solid copper heat spreader.Both the board upper surface and the heat spreader surface are heavy goldplated. Board needs to be mounted on heat-sink using Silicon grease and 7ea. 4-40 screws inexisting holes.RF input and outputs are 50 ohm strip-line and will butt up to a standard SMAor N launch connector. Good quality SMA connectors are rated to 400W at 2GHz and work verywell for this amp. The XRF286 Lateral Mosfets used on this board can handlea 10:1 VSWR at full power so isolators are not required.Board dimensions are 2.25\" x 5.9\". Weight is 6 ounces.DC connector pin-out.1, Temperature output = 10MV/ degree F.2, PTT = +12V To enable all 3 power FETs.3, Drain current monitor for Q1. 1 volt out/amp of drain current.4, Drain current monitor for Q2. 1 volt out/amp of drain current.5, Ground.6-10 are no connection.(I also have some of the complete 180W Spectrian amplifiers available and will start a fixed price sale for you by request. Please call (407) 767-5119 to request an sale if you don\'t see one currently running.)

Florida buyers must add 7% (or actual amount for your county) sales tax or mail me a signed photocopy of your Florida Resale Certificate with your payment!I do combine sale winnings when ever possible to save buyers money. I do ask that buyers help keep track of any sale shipments they want to combine and email me for a total when they are ready. Fixed Priority S&H quoted prices are for 50 USA states.International buyers pay actual S&H.Good luck offerding! KI4NPV 407-767-5119 PaymentI accept the following forms of payment:

  • PayPal


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