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Old 09-11-2007, 01:05 PM
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Default delta tune


What the heck is delta tune. I just picked up a virgin 29xlr with it and i have no idea what it is. any ideas on what i could do to make the 29xlr a little more awseome.
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Old 09-11-2007, 01:23 PM
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Clarifier for SSB use. It trims up the received signal to dial it in.

At least that is what it was on an old Pace I used to have.

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Old 09-11-2007, 01:25 PM
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The word "delta" actually means "changing". In other words it is just a fancy name for a receiver clarifer or fine tuning.

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Old 09-11-2007, 02:14 PM
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The 29 is an AM radio only. It has a delta tune. SSB radios have a clarifier of some sort, not a delta tune.

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Old 09-11-2007, 02:38 PM
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the delta tune is kinda like a clarifier, but a very slight difference is noticed on am.

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Old 09-11-2007, 06:41 PM
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yeah thats what i thought it was and i turned it while i was testing it and it wasnt doing anything so i just deemed it useless and unimportant. thanks guys
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Old 09-11-2007, 08:27 PM
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the delta tune is a useless feature that the manufacturer included for the specific purpose of having an easily accessible location for things like echo controls, variable power, or a channel switch.
thats just what i think.
who knows what the actual reason was for putting a "clarifier" on an AM radio.
loosecannon
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Old 09-12-2007, 06:07 AM
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My Uniden PC 78XL has delta tune, and I modified it to slide between the standard CB channels. It will swing down about 11 KC and up about 2 KC from the center detent position.

I modified the radio with an external oscillator to work on 29 MHz for Ham AM use, and the delta tune mod really helps me tune in the guys who don't use the "5s." On the actual CB band, this ability probably wouldn't be needed because of simpler ways to get on the "A" channels. (Capacitor-10.240-Switch Method)

I think that the original reason for having delta tune on the AM only CBs was so you could tune in folks whose old 23 channel "crystal-plexers" had drifted WAY off frequency. However, as Loosecannon said, now it is mostly used to put echo, etc. in the place of...
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