Re: R1 Setting
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Evidently, we are. I do know that Farrukh just started classes and I know that its a busy time. However, like you said, this has been hanging around for a long time and I'm not qualified to answer it. I'll forward this to him to see if he can give us a quick answer, although I thought he did answer it once before, but I can't find it. Jack, W8TEE From: "ab1br@... [SoftwareControlledHamRadio]" To: SoftwareControlledHamRadio@... Sent: Monday, August 29, 2016 1:05 PM Subject: Re: [SoftwareControlledHamRadio] R1 Setting I've posted the NE612 data sheet in the attachments section. ?The pin 6 L.O. input spec is highlighted. The data sheet recommendation for an external LO pin 6 input is 200mVpp to 300mVpp. Indeed, if a crystal were used instead of an external VFO, the input would likely be in the mV range. To me, this is evidence that pin 6 does not want to see an input amplitude in the volt (vs. mV) range. Proper LO input amplitude reduces possibility of input overload causing less effective filtering and strong signal (BC) images.
Jack, are we still waiting for an answer on this communal repetitive question from Farrukh? Cheers. Jim, AB1BR |
jjpurdum