Here is an interesting and very specialized device that we acquired a few months ago and something that you rarely see offered for sale. It is a model 240A RFI (radio frequency interference) "sniffer" manufactured by Radar Engineers and it covers an exceedingly wide spectrum that is continuously tunable from 1.8 through 2000 MHz. Thus, this covers 160 meters the rest of the amateur radio bands on HF, 6 meter, 2 meter, FM, VHF, and UHF. As you can see from the pictures, the device comes with its own Yagi antenna which covers a range from 270 - 1000 MHz. You would need to attach an appropriate antenna for frequencies above and below this range to discover RFI sources in your home, neighborhood, or office.We have set the price in accordance with a fair value as used, but in wonderful condition. The good news is that Radar Engineers still exists and so they can be consulted for information or antenna options. RFI can be maddening when it appears on your operating frequencies (or on your TV) and it can be difficult to detect the source. Imagine being able to use this device for your own needs or perhaps for your amateur radio club to have available for the various members.
Perhaps you would like this device to offer the RFI locating service as part of an occupation. This 240A unit is self contained with an internal rechargeable battery and carry case so that you can walk around and point an antenna to "sniff" the offending interference. You can see results on the LCD oscilloscope display screen, hear the noise using the internal speaker, and have the ability to filter, amplify, and store data. You can even patch this audio and video to another device for recording or observation. The 240A unit comes with Yagi antenna, carry case, battery charger, and instruction manual.There is a learning curve to operate the device, but fortunately the user manual is not lengthy to read and digest. There is a copy of a brochure for a similar 242A unit that does not exactly match the 240A, but much of the information is similar and so it is included for your information. One for the antenna and one for the receiving unit.
The item "Radar Engineers Model 240A RFI Locator 1.8 2000 MHz Find RFI on HF FM VHF UHF" is in sale since Sunday, November 15, 2020. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Receivers". The seller is "bigapple59" and is located in Mill Hall, Pennsylvania. This item can be shipped to United States.