microwave Doppler ranging radar A0-40 ham rad

Description

Before you read this listing, please note that the manual at geocities is no longer active. I didnt set that up and have no clue how to put the manual online so if you wish to  have a copy of the manual I have had it reprinted at a cost of 7.50 dollars. You will have to specify if you wish for one and add 10 dollars to either shipping or handling on payment to recieve one. . Each unit does come with an operation manual. Now read on..................................
Being offered is 1 Rashid anti-collision radar that operates at 24.1 GHz, right out of the sealed box being sold as new, old merchandise. This system was developed to operate in the 24.1 GHz ham/police part 90 band to provide braking signals to trucks when target vehicles in front of them stop. The system operates on 12 VDC. The unit for sale is sealed in a box and includes the system components shown in one of the system photo provided below. This system is a frequency stepped (square wave modulated) radar that was designed to provide range to a target vehicle in the beam out to a range of about 1,000 feet. The antenna 3 dB beamwidth is advertised as 1 degree. The gain of the antenna is very high, given this very tight beamwidth. Shown in the photos below is the Gunn-plexer, with varactor, to shift the frequency between two transmit frequencies. Also included in the microwave package is the detector diode. The associated amplifier circuit and output multiplexer is built on the printed circuit board in the transmitter head of the unit. The short horn is circularly polarized and includes a 7 inch lens in front of the short horn. The system is complete with an analog computer, 12 volt power supply, transmission cable speed pick-off and an in-cab control unit. However, the system has not been tested as an anti-collision system, but the microwave components have been tested and found to be in "as new condition". Included below are photos of how one of these units has been modified with a prototype board to allow signals from the system to be used as a homodyne Doppler radar or a ranging stepped frequency radar with the addition of components. The analog computer boards (Boards encapsulated in black shock absorber material) have been removed from the brown case and could be replaced by digital circuitry on a prototype board (NOT INCLUDED BUT SHOWN FOR ILLUSTRATION PURPOSES ONLY) has been substituted for the analog computer board in the Brown computer case. The power supply has been kept in the Brown case and provides power to the head. The Brown case plug system also has been kept to feed the microwave head and to provide power. Audio from the frequency stepped homodyne radar is sent down the shielded cable from the microwave head to the Brown control unit. This unit can be used as a continuous-wave homodyne radar, a stepped frequency ranging radar using the intended square wave modulation scheme, or as a 24.1 GHz receiving system. The short horn and the lens produces a 1 degree beamwidth which is perfect for AO-40 work or point to point ham radio FM 24.1 GHz communications. If we had a cable operated speedometer, we could have tested the system as an anti-collision system, but everything is electronic on our vehicles. Therefore, what you are bidding on is the entire system out of the box, as new, old inventory, that is worth several times the asking price as a very sensitive 24.1 GHz radar or communications foundation unit. If you have questions, please ask before you bid. We think that this unit will sell quickly with a buy-it-now price of .00. All my auctions are stated as U.S. only but send an e-mail if you are outside of the United States but please do not expect us to play games with your Customs declarations. THE INSTALATION MANUAL SEEN IN THE 1ST PIC IS THE ONLY ONE I HAVE AND WILL NOT BE INCLUDED
PLEASE NOTE: I SELL OLD STOCK AUTO PARTS BUT HAVE AN ELECTRICAL GENIUS HELPING ME WITH THIS ITEM. HE HAS GRACIOUSLY OFFERED TO HELP WITH ANY OTHER TECHNICAL QUESTIONS AND I WILL FOREWARD ANY OTHER INFO OR QUESTIONS AND GET THE ANSWERS AS QUICK AS POSSIBLE. I CANNOT GET THE SHIPPING AMOUNT CHANGED THAT E-BAY CALCULATED AND SHIP COST VARIES BY ZIP CODE SO PLEASE DO NOT CHECKOUT USING THE E-BAY QUOTE! WILL QUOTE ACTUAL SHIP RATE WHEN I HAVE DESTINATION ADDRESS.  THANX
Powered by
eBay Turbo Lister