Ceramic filter for JR RX

[RussellK]

Does anyone know where I might get a replacement ceramic filter for a JR R700 receiver? It is marked with only M6J N V - I haven't been able to find out any data on it - if I could, I'm wondering if I could get away with an alternative unit.

Russell.

[hbsloper]

Not sure what the filter is, I do know that when I reversed the power on my JR R700 it fried the surface mount capacitor just inside the power leading into device. I found a slightly larger version and just jumpered it in, fixing the receiver. If this is what you need I can send you one, I have an extra. Its surface mount and light brown, don't remember the markings and don't remember value but could find out if needed.

Steve

[RussellK]

Thanks for the offer Steve, but this is definitely a ceramic filter, which is essentially a bandpass filter that filters the 455kHz intermediate frequency after the mixer. The benefit of the filter is that it has very steep sides, allowing it to only pass frequencies within a very narrow range - ie, 10kHz or less.

The device looks like this:
http://www.vanlong.com/download/LTWC455.pdf
and is white - I assume there is one in your R700.

Russell.