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eHam Forums / Elmers / Schema for 1 channel SSB tranceiver in 30 kHz(!)
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on: January 09, 2004, 06:46:01 PM
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Hi Kirk,
The only ssb info I have is fitted in "rigs" with also FM/AM/SSB/CW mf superhet and multichannel tuning (PLL) and so on. I am looking for a simple ssb-design so I can retune is for the vlf.
Do you have some hints or directions for it on the internet?
Thanks anyway,
Johan 73'
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eHam Forums / HomeBrew / VLF SSB Tranceiver in 30 kHz (!) band
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on: January 09, 2004, 06:38:40 PM
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Thanks for your reaction, WB6BYU,
I taste in your text that a filter-basad system preferes because one TXRX frequency is sufficient. Also will there be little trouble with sidechannels on the open sea. My problem is that the only schematic diagrams I have of several "rigs" are fitted with AM/FM/LSB/USB/CW features, MF-stages multichanneltuning and so on. I really need information about simple ssb-applications and retune these to that vlf-band.
Can you give me a direction about this on the internet?
Thanks anyway,
Johan 73's
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eHam Forums / Elmers / Schema for 1 channel SSB tranceiver in 30 kHz(!)
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on: January 06, 2004, 05:10:06 PM
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Thanks for your reaction Kirk. I am aware of the ultrasonic priciple, but your hint about the intercomsystem on ac-wiring is very,very helpful.
My homebrew wired system for UW-com is build around the lm368 also. But don't you think a ssb-modulation gets much better results in water? Commercial systems like OTS do use it too.
However I am already searching for ac-intercom diagrams already,
Thanks, Johan
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eHam Forums / Misc / Schema of 1channel SSB tranceiver at 30kHz(1)band
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on: January 06, 2004, 03:45:58 PM
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Al the way from Holland Europe a request for info or schematic diagrams of a simple SSB transceiver.
One working frequency ( about 31500 Hz)is sufficient, so no PLL things required. The application is for an underwatercommunication set. So voice- bandwith only.
A link to simular sites is also helpfull.
Who can help me?
Thanks from Johan. 73's
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eHam Forums / Elmers / Schema for 1 channel SSB tranceiver in 30 kHz(!)
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on: January 06, 2004, 03:33:17 PM
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Al the way from Holland Europe a request for info or schematic diagrams of a simple SSB transceiver.
One working frequency ( about 31500 Hz)is sufficient, so no PLL things required. The application is for an underwatercommunication set. So voice- bandwith only.
A link to simular sites is also helpfull.
Who can help me?
Thanks from Johan. 73's
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eHam Forums / HomeBrew / VLF SSB Tranceiver in 30 kHz (!) band
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on: January 05, 2004, 04:15:50 PM
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Al the way from Holland Europe a request for info or schematic diagrams of a simple SSB transceiver.
One working frequency ( about 31500 Hz)is sufficient, so no PLL things required. The application is for an underwatercommunication set. So voice-bandwith only.
Sorry for the worse englisch.
Who can help me?
Thanks from Johan. 73's & 51's
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