FS: MFJ-704 Low Pass Filter
 

If your harmonics are causing TVI problems, an MFJ-704 could keep your
neighbors happy while you have fun hamming.
MFJ's Super Low Pass filter simply plugs between your rig and antenna.
It suppresses TVI, RFI, telephone and other interference by reducing
unwanted harmonics going to your antenna. At the same time your HF
signal passes on through with low loss so you can snag rare DX.
Nine Chebyshev poles, MFJ's exclusive TeflonDielectric Technology
capacitors, Hi-Q inductors, ground plane shielding and an RF tight
cabinet give you excellent TVI and RFI protection. (Right from the MFJ
flier.) Instructions & box included. ONLY $19.95 plus $8.95 shipping
and insurance. First e-mail gets it! 73, Bill - WA8MEA -
- http://HamRadioFun.com