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Title: Interesting audio pass band circuit Post by: Opcom on April 01, 2025, 01:08:41 AM This audio circuit from old Ham Radio magazine passes only the audio frequency bandwidths which carry the most intelligence.
Title: Re: Interesting audio pass band circuit Post by: W3JKO on April 01, 2025, 07:45:01 AM That would be good to try out on 7,200 since there's not much intelligence going on there. ;D
Title: Re: Interesting audio pass band circuit Post by: W3SLK on April 01, 2025, 10:51:32 AM Often referred to by Don, K4KYV as 'space shuttle' audio! ;)
Title: Re: Interesting audio pass band circuit Post by: DMOD on April 01, 2025, 05:41:30 PM This audio circuit from old Ham Radio magazine passes only the audio frequency bandwidths which carry the most intelligence. Well, this might be used for a receiver, but the input and output impedances are totally wrong for transmitters. Title: Re: Interesting audio pass band circuit Post by: Opcom on April 03, 2025, 10:51:37 PM pleasse see the atachment on this. ;-) AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
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