Hi- I am looking for any or all of these three Ten Tec filters which are used in the 9 MHz I.F. of the OMNI V and VI: numbers 217, 218 or 219. I have the 6 MHz filters, next is to try 9 MHz filtering. $75 each mailed looks like the going rate. Reply off list as I get the digest version, TNX 73 de Dave in NH