15Khz Low Pass Filter

[Blastoff]

A number of years back Toko used to make a 7 pole 15Khz Passive
Lowpass filter."ABT07 Series" These were used mainly in FM
transmitting equipment and stereo encoders etc.

There was one other company that also made these but for the life of
me I cant remember "Old age I guess"

Any info much appreciated on a possible source.

Thanks.. Jim.