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What makes it tick?
On Thu, 11 Jan 2007 13:21:16 -0800, Frank Gilliland
wrote in : snip ...... My first guess would be that you have MPD..... I'm sorry, I forgot that you have problems with acronyms: MPD -- Multiple Personality Disorder |
What makes it tick?
On 11 Jan 2007 04:14:20 -0800, "Telstar Electronics"
wrote: +++Jimmie D wrote: +++ Put together a little rf speech processor last night on a bread board using +++ color burst crystals for IF filter and osc. Works great with 9db of +++ clipping, about $10 worth of parts off the shelf cost. Took about 2 hours to +++ bread board it up. I figure a one man production line could build one in +++ about 30 minutes.Its just stuffing a board and soldering. +++ +++9dB... are you saying you got a 9dB power increase in transmitter +++power? Please clarify. +++ +++www.telstar-electronics.com ************** Reread again. He stated 9 db of clipping. That does not correspond to power increase. james |
What makes it tick?
On 11 Jan 2007 05:03:29 -0800, "Telstar Electronics"
wrote: +++Frank Gilliland wrote: +++ I like it, too. It's slicker than a whore's leg on nickel-day. I used +++ a 100kHz crystal and LC filter for mine, but using colorburst crystals +++ would make it a lot smaller. +++ +++ I'm sure Brian will be pleased to hear that it doesn't require much +++ work. All he needs now is for someone to draw him a schematic!!! +++ +++The problem is that this type of RF clipping scheme only works on SSB +++signals. Back to the drawing board Frank. +++ +++www.telstar-electronics.com ************ SSB is AM james |
What makes it tick?
james wrote:
SSB is AM Nonsense... SSB is not AM(double-sideband). These are two distinct modes of AM type transmissions... and are very different. www.telstar-electronics.com |
What makes it tick?
On 12 Jan 2007 05:12:20 -0800, "Telstar Electronics"
wrote: +++james wrote: +++ SSB is AM +++ +++Nonsense... +++SSB is not AM(double-sideband). These are two distinct modes of AM type +++transmissions... and are very different. +++ +++www.telstar-electronics.com ********* You are correct in that they are two different modes. They are amplitude modulated signals and are derived from the same general equation. Look in any Communications Text book used in Electrical Engineering school. james |
What makes it tick?
james wrote:
You are correct in that they are two different modes. They are amplitude modulated signals and are derived from the same general equation. Look in any Communications Text book used in Electrical Engineering school. Like I said... they are very different. Don't miss seeing the new CB Radio Speech Processor Prototype at http://www.telstar-electronics.com/d...s/WhatsNew.htm |
What makes it tick?
"Jimmie D" wrote in message ... "Telstar Electronics" wrote in message ps.com... Anyone care to venture a guess what's inside this? http://www.survival-systems.com/yeticom/cp-1.html Put together a little rf speech processor last night on a bread board using color burst crystals for IF filter and osc. Works great with 9db of clipping, about $10 worth of parts off the shelf cost. Took about 2 hours to bread board it up. I figure a one man production line could build one in about 30 minutes.Its just stuffing a board and soldering. Got a nasty cold so I stayed away from work today and tinkered with my speech processor some. Replaced the transistor mic amp with an op amp and Put an FET in seies with the input to the amp. Feeding the gate of the amp with dc derived from the output of the processor giving it AGC. This thing is getting to be a knob twisters delite. One thing did get me thinking. I have a nice scope to look at the output of my TX and to lookat the output of the processor , for me its a piece of cake to setup. How can you do this without test equipment? |
What makes it tick?
Jimmie D wrote:
One thing did get me thinking. I have a nice scope to look at the output of my TX and to lookat the output of the processor , for me its a piece of cake to setup. How can you do this without test equipment? Absolutely, I have a nice Tektronix scope I use... Don't miss seeing the new CB Radio Speech Processor Prototype at http://www.telstar-electronics.com/d...s/WhatsNew.htm |
What makes it tick?
"Telstar Electronics" wrote in message ups.com... Jimmie D wrote: One thing did get me thinking. I have a nice scope to look at the output of my TX and to lookat the output of the processor , for me its a piece of cake to setup. How can you do this without test equipment? Absolutely, I have a nice Tektronix scope I use... Don't miss seeing the new CB Radio Speech Processor Prototype at http://www.telstar-electronics.com/d...s/WhatsNew.htm But how does most of the people who buy them do it? |
What makes it tick?
On 12 Jan 2007 16:33:42 -0800, "Telstar Electronics"
wrote: +++james wrote: +++ You are correct in that they are two different modes. They are +++ amplitude modulated signals and are derived from the same general +++ equation. Look in any Communications Text book used in Electrical +++ Engineering school. +++ +++Like I said... they are very different. +++ +++Don't miss seeing the new CB Radio Speech Processor Prototype at +++http://www.telstar-electronics.com/d...s/WhatsNew.htm ********* No they aren't. They are more similar than different. SSB is an AM signal that has the carrier supressed and the opposite sideband filtered out. Then again I would expect a tech to not totally understand the subtle differences between AM and SSB. james |
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