Can someone please confirm or deny the use of Phillips chips # NE5044 and NE5045 in the Conquest radios?? Is the Signetics # CD8081 a direct replacement? Anyone aware of a source for these new or what radios they can be pulled from? TIA Brian C Hagerstown Md
Brian, These are very old Signetics encoder/decoder chips. I guess no more in production today. Maybe yet available at
Paul, I think that the servo driver was NE544.
Daniel
If I recall correctly the NE544 is the servo chip and the NE5045 is the transmitter encoder chip. NE5044 was the decoder chip I think.
One of my notes indicates that a CD8081 is the same chip.
I will look at some encoder boards I designed and built for Royal systems many years ago when I am at work tomorrow.
Both are out of production but I think close copies are being produced today for simple transmitters. Just not available to the small radio developer repair shop as the big 4 have the chips produced under license now.
I just repaired a fairly new 2 channel Futaba transmitter and the chip pinouts were identical.
Hugh
Hi,
Have a look here :
Olivier
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