which receiver board is the latest?

[wibblywobbly]

I have 3 receiver boards in my parts bin.

2 have a black component that is marked CFWM 455E.
1 has the same component but is marked LTM 455E.

Does anyone know which is the latest spec, or whether they are all ok to use with an RX18?

[jrc]

hi Rob, they are just ceramic filters doing the same job so both are ok

Ross

[wibblywobbly]

Cheers Ross, I picked one at random, and it does the job, so all's well.

[xrad]

455e's are generally bandpass filters. The letters after the number indicate the fq of that particular filter (ex: E may mean 455khz while f may mean 500khz..manufacturer dependent?) Special connections or additional elements in the filter as well as manufacturer can be represented by the preceeding letters..