Hi All, Vaino and I have found a filter from the Rockwell-Collins "Low Cost
Range" with a bandwidth of 300Hz and physical charcteristics similar to the
500Hz option offered as a retrofit option by AOR. (Shape curves can be found
on the R-C site)
I have been quoted a rather high price for this unit by the the R-C agent in
the UK but find that I can purchase direct from Rockwell-Collins in
California. The problem is they do not accept credit cards and require a
bank-draft, money order, or dollar cheque. The UK banks derive quite a
rip-off from these items as you may know.

I am willing to make a bulk order for these items if there is any interest.
I am definitely obtaining one for my receiver, and a bulk purchase would
enable us to benefit from a lower carriage and even a slightly lower
purchase cost. The basic price from R-C is $91. Vaino was charged $121
including carriage. There would obviously be a portion of the bank fees and
VAT and duty to add to that. If you are interested in joining me in
obtaining these items I will attempt to get a rather more firm idea of the
actual total cost. I am even willing to fit them to the receivers if
required, but it is a very simple operation.

73 de Alan G3NYK
[email protected]