Re: Adding speech compression.
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Dennis and I are working on an AGC module built around the AD8367 and speech compressor using the SM2167. The goal is to have a daughter PCB similar to that for the Forty-9er (see: www.farrukhzia.com/k2zia) that handles those functions plus the TFT display, the AD9850 VFO, all using a Mega 2560 Pro Mini which replaces the Raduino board. The board will be released at the FDIM conference that takes place just before the Dayton Hamfest. We're not sure of the board's final size yet, but we plan to sell the bare board for under $10. Dennis is checking to see what it would cost to have the SMT parts set as part of fabrication. Too soon to tell about that.
Jack, W8TEE
From: John Smith via Groups.Io <johnlinux77@...>
To: [email protected]
Sent: Monday, April 3, 2017 2:23 PM
Subject: Re: [BITX20] Adding speech compression.
I am still wanting to find out if anyone has done something like this with the BITX40. I am still not sure if this pig is worth that much lipstick. Did microphone gain help folks with low audio input. Is seems people have plans, but don't do or talk about them for some reason. I haven't even connected the audio jacks because there is nothing to do with it at this point. Digital modes are what most people are wanting. Someone should think about a BITX for digital modes only. ?I'd buy one, if it's cheap. But yea, I have read a lot about this as a solution for folks who think it doesn't have enough grunt. Me too. But I have been happy with getting more power out as is. But with an average output around 10-12W while 25W steady from a tone generator is possible. I would really like to increase my average output a bit. Within reason.? I look forward to reading your results as I begin sourcing parts to help decide on a circuit to start with. Someone emailed this one to me. It seems easy to make, but I don't know what type of speech processor it is. I'll probably start here. http://www.rason.org/Projects/speech/speech.htm
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