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#1
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On Thu, 06 Sep 2007 04:55:23 -0700, Telstar Electronics
wrote: |On Aug 28, 11:24 pm, " Peter" wrote: | UK CB is FM only. | There is no "talk power" with FM, it is a constant carrier | level (unless some tw@t has f'ked the radio up). | Increasing audio level does NOT increase the distance | of your signal. | |While you are correct that increasing your audio level alone won't do |anything for FM... increasing the density (compression) of the audio |will have a beneficial effect on transmission range. This is what |VoiceMax can accomplish on the FM mode. |www.telstar-electronics.com | |----------------------- Brian, have you been tipping the bottle a bit too much lately??????????? Sorry Brian. Increasing the power density in the audio spectrum of a NBFM signal will do jack for transmission range. Simply to put it, to incease range, you need to increase carrier power. To put it simply, at the reception end the NBFM signal needs to be 20 dB carrier to noise ratio or about 12dB SINAD to obtain near full quieting. All audio power does is increase deviation. Using a compressor on FM just increase average deviation. james |
#2
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On Sep 6, 7:31 am, james wrote:
All audio power does is increase deviation. Using a compressor on FM just increase average deviation. Exactly, and I claim that having that increased average deviation is an advantage on FM. www.telstar-electronics.com |
#3
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On Thu, 06 Sep 2007 08:40:04 -0700, Telstar Electronics
wrote: |On Sep 6, 7:31 am, james wrote: | All audio power does is increase deviation. Using a compressor on FM | just increase average deviation. | |Exactly, and I claim that having that increased average deviation is |an advantage on FM. |www.telstar-electronics.com | |------------------- Incerased deviation does not necessarily translate into farther transmission range. Which is what you are hyping. Transmision range depends far more on other variables than just the transmitter. That is the problem with most CBers. They think more transmitter power or audio will increase range. Keep beleiveing in your snake oil and patent medicene. james |
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