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Great Mic Sound for your CB or Export Radio-part 1

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  #9  
Old 10-28-2010, 07:37 AM
T23 T23 is offline
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How is that? if that was the case power mics would be useless. can you elaborate on that?

T23

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  #10  
Old 10-28-2010, 06:04 PM
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Originally Posted by T23 View Post
How is that? if that was the case power mics would be useless. can you elaborate on that?

T23
They pretty much are unless your radio requires a very high input level to achieve 100% modulation. Once you start hearing everything in the room or beyond the operator is using far too much gain.
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Old 10-29-2010, 12:52 AM
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Originally Posted by sp5it View Post
Radio is a bottleneck.
First of it all you need to modify your radio to get as wide, as flat as possible TX audio bandwidth.
Than you can polish your sonic personality any way you want.
Mike
Yes; that is part of it.
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  #12  
Old 10-29-2010, 07:46 AM
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Originally Posted by Robb View Post
Have you listened to Hams using exotic audio gear and wondered how they got a true broadcast sound out of their radios? Have you ever wondered if it was possible to do the same thing to a Cobra, Connex, Ranger, Magnum, or Galaxy?

What is the point?
ROBB -


I've always thought that the point of cbing was to communicate, and to do this by transmitting a signal that was LOUD and (most importantly) CLEAR on the receive end. This can be done without resorting to "exotic audio gear".

The most effective way to improve your station's sound is to use a high quality broadcast microphone. Then align the radio to FCC specs (i.e. 4 watt deadkey - modulation infinitely close to but not exceeding 100%). Use a scope and\or spectrum analyzer instead of relying on a wattmeter. If you need more signal strength, invest your $$$ in a good amp and an "exotic" antenna system, and be certain that your rig isn't driving the amp out of linearity.

The best-sounding station I hear coming out of the USA runs a box-stock Shakespeare tube rig with a Heil mike pushing about 200W into stacked fours. His signal is clear and natural, and when he keys up he blows everyone else away.

To make your rig louder on-the-air, use proven techniques like compression, speech clipping, DSP, or hard audio limiting (like a fast-attack ALC.) NPC is a good choice, but not the worthless diode/resistor mods that are on line. Compressors, clippers, limiters, etc. for musical instruments work as well as similar amatuer equipment, but without the high cost. So-called "swing kits" are junk. There are many internal mods for CBs that will improve performance without sacrificing clarity, but these vary from rig to rig.

Also, be sure to start out with a high quality transceiver. It's pointless to put lipstick on a pig.

Please realize that there are no other CBers here, so all of my communication is DX and I'm writing this from that point of view. On the amatuer bands or local CB nets, where people show more consideration for each other, what you're advocating is probably a good thing.

73s.

- 399

Last edited by unit_399; 10-29-2010 at 08:02 AM.

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Old 10-29-2010, 09:36 AM
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That is how sounds modified President Lincoln (HR-2510) in AM with some Behringer audio gear: Wrzuta.pl - Modulacja President Lincoln

Here is SSB 0-12s, AM 12-22s, FM 22-42s. Wrzuta.pl - Lincoln i behringer
EQ was set quickly just for testing, so it can sound better.
Recorded with Kenwood TS-870s with flat receiver curve.
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Last edited by sp5it; 10-29-2010 at 04:21 PM.

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Old 10-29-2010, 02:48 PM
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Quote:
Originally Posted by unit_399 View Post
ROBB -


I've always thought that the point of cbing was to communicate, and to do this by transmitting a signal that was LOUD and (most importantly) CLEAR on the receive end. This can be done without resorting to "exotic audio gear".

The most effective way to improve your station's sound is to use a high quality broadcast microphone. Then align the radio to FCC specs (i.e. 4 watt deadkey - modulation infinitely close to but not exceeding 100%). Use a scope and\or spectrum analyzer instead of relying on a wattmeter. If you need more signal strength, invest your $$$ in a good amp and an "exotic" antenna system, and be certain that your rig isn't driving the amp out of linearity.

The best-sounding station I hear coming out of the USA runs a box-stock Shakespeare tube rig with a Heil mike pushing about 200W into stacked fours. His signal is clear and natural, and when he keys up he blows everyone else away.

To make your rig louder on-the-air, use proven techniques like compression, speech clipping, DSP, or hard audio limiting (like a fast-attack ALC.) NPC is a good choice, but not the worthless diode/resistor mods that are on line. Compressors, clippers, limiters, etc. for musical instruments work as well as similar amatuer equipment, but without the high cost. So-called "swing kits" are junk. There are many internal mods for CBs that will improve performance without sacrificing clarity, but these vary from rig to rig.

Also, be sure to start out with a high quality transceiver. It's pointless to put lipstick on a pig.

Please realize that there are no other CBers here, so all of my communication is DX and I'm writing this from that point of view. On the amatuer bands or local CB nets, where people show more consideration for each other, what you're advocating is probably a good thing.

73s.

- 399
This isn't about getting out farther; this is about making it sound to its best potential. It also keeps the modulation to 100% or less for best sounding audio. This is about doing better than the D104 or the Turner+3 did - and doing it for only slightly more money. Even a CB can do so; some will work better than others - and if theirs do not - then maybe time to upgrade. It's also about 'some' of the new wave of radio operators that can already be heard across the US and abroad during skip conditions that sound head an shoulders better than others - and what our forum members can do to match that. It is far from pointless; some operators are already doing it with great results. It's a 'how to' do it yourself and understanding how to hook it up. New and old WWRF members/CB operators might well be ready to make this change/upgrade to keep up with the times/catch up.
It is all of those things.

Thanks for the comment!

73

Also:
Thanks sp1it for the audio examples. They were a little hard to find on that page ('Polish'), but I appreciate the effort and those files.
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  #15  
Old 10-29-2010, 05:26 PM
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Quote:
Originally Posted by Robb View Post
This isn't about getting out farther; this is about making it sound to its best potential. It also keeps the modulation to 100% or less for best sounding audio. .


I suggest that you read my post again, that is if you actually did the first time.

- 399

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  #16  
Old 10-29-2010, 07:31 PM
T23 T23 is offline
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Although I like the way this statement is worded... ( ) -----> "Also, be sure to start out with a high quality transceiver. It's pointless to put lipstick on a pig."

I dont agree at all with the context of the statement that this is a fragment of in it's entirety...

As Robb said THIS "How To" is for better grade audio... Not getting out farther.


T23

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