开云体育A year ago I found one of the appropriate AOR-branded 300Hz Collins mechanical filters on the eBay Japan site for the ? equivalent of about $100. The seller, a Tokyo based AOR dealer, had just one filter, so I bought his last one. It arrived in an AOR box a week after placing the order.I sourced the requisite small printed circuit board from Artur (SP6AB).
?Artur was surprised I was asking him for a board since he hadn’t sold any in a while and since he believed that the global supply of the Collins mechanical filters had “long” ?been exhausted.
He has “plenty” of the circuit boards available but has no leads on where one might find the Collins filters.
My assembled filter that I am using in my FT-817ND is identical in fit and function to the Yaesu-branded filter I have in my FT-818ND.
?Artur shipped quickly and the boards (I bought two- one for a spare) arrived in Seattle from Poland in just a few days. ?I recommend his boards unconditionally.
I have two suggestions for obtaining the Collins mechanical filter:
?1) Search e-Bay for the appropriate *Collins* part number (don’t use the Yaesu part number unless you want to buy the ~$300 assembled Yaesu filters).?
2) Search eBay and ham sites for the Yaesu part numbers corresponding to the genuine Yaesu filters for *other* Yaesu rigs that use the same Collins part numbers. You will find these Yaesu filters are assembled using a printed circuit board quite a bit
larger than our FT-817/FT-818 filters. But the correct Collins filter can be un-soldered from the boards and re-soldered to one of Arthur’s boards.
I reached Artur at the email address listed with his callsign.
73 de N7TIN
On Jun 28, 2024, at 10:31, Ken N2VIP <ken@...> wrote:
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