MFJ-959B HF Antenna Preselector/Preamp
 

This is a HF receive only antenna tuner that I used to preselect a band
into a receiver. This is needed if one lives near a AM or SWL broadcaster
where the transmitter overloads the front of of a receiver. It works
great for using a longwire into consumer Shortwave radio. $80 Unit ships
when moneyorder or cashier's check clear the bank. USA and CA only