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Old July 1st 06, 09:33 AM posted to rec.radio.amateur.homebrew
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Default Questions about I.F. Transformers

On 29 Jun 2006 16:40:54 -0700, "Jody" wrote:

I can't seem to find any I.F. transformers for 465 KHZ. I was wondering
if you can use the 455 khz ones instead without changing any other
components. I'm building a reciever that calls for 465.


What exactly specifies that the 465 kHz must be used ?

Is there a frequency synthesiser or frequency counter with specifies a
fixed 465 kHz offset ? If not, just run the local oscillator at a
frequency 10 kHz lower to produce the 455 kHz IF and calibrate the
scale accordingly.

If this is a dual conversion receiver, change the second mixer
oscillator frequency.

Paul OH3LWR



 
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