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Good day! Has anyone got any application information for the Toyocom
45E2B2 45 MHz 4 pole filter. It comes as 2x3 lead crystal cans. Unfortunately it has been over 20 years since I started this reciever project. (It was put to one side after a HEAP of sythesiser problems) Of course I cannot now find any data on how the two crystal units are coupled together. What info I has gives a Zi/o of 4K Ohms and 0.8 pF but the only info on coupling the 2 is an unexplained figure of 1pF? That seems too small to me even at 45 MHz! So what I need urgently is an clarification of the coupling required between the 2 units. Has any kind person got this info anywhere? Or does anyone have circuit information on a receiver which used this filter? That would give me a lot of clues. 73's Clifford Wright ZL1BDA ex G3NIA Helensville New Zealand. |
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