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Message |
    
Onespeed
New member
Username: Onespeed
Post Number: 3
Registered: 9-2004
| | Posted on Monday, September 13, 2004 - 1:52 am: | 
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While going through my thimgs I found schematics for a audio clipping board for improved dynamic speech prossesing. I was wandering if anyone had installed such a thing or if a swing kit would get better results. |
Dindin
Intermediate Member
Username: Dindin
Post Number: 370
Registered: 2-2004
| | Posted on Monday, September 13, 2004 - 9:02 pm: |
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onespeed,as far as results it depends on what you want.is you want to see a meter swing go with the swing kit.if you want your modg to sound good go with the processor.can you e-mail me a copy of the schematic?my e-mail is listed in my profile.And welcome to the forum. |
Bruce
Senior Member
Username: Bruce
Post Number: 1571
Registered: 9-2003
| | Posted on Monday, September 13, 2004 - 11:15 pm: |
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tentec and others make them the tentec one is less that $20
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Therealporkchop
Member
Username: Therealporkchop
Post Number: 54
Registered: 11-2002
| | Posted on Sunday, October 03, 2004 - 7:21 pm: |
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I ordered one from CBC International. Mr Lou Franklin himself to be exact. I put the kit together as his instructions stated. First off, your radio must be stone stock. Forget all the mods and limiter bypasses. I still can't get mine right. Maybe this kit isn't one to go with. Anyone know where another kit is available from? |
Kid_vicious
New member
Username: Kid_vicious
Post Number: 1
Registered: 9-2004
| | Posted on Sunday, October 03, 2004 - 9:21 pm: |
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i bought the ** **** kit years ago and couldnt get it to work right in any of the radios i put it in. i bought their channel switching board and it worked great. go figure |
Tech808
Moderator
Username: Tech808
Post Number: 3736
Registered: 8-2002
| | Posted on Sunday, October 03, 2004 - 9:39 pm: |
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Kid vicious,
WELCOME TO THE COPPER FORUM!
Now you need to join the CEF RADIO GROUP!
Lon
Tech808 |
Patzerozero
Intermediate Member
Username: Patzerozero
Post Number: 128
Registered: 7-2004
| | Posted on Saturday, October 09, 2004 - 8:01 pm: |
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put cbc intl's speech processor in my johnson viking 4740, pace 1000m, tram d62, superstar 360, president grant dx, and a few other early 80's radios. most were peaked, limiters on switches, and even used old 7v d104m on several radios. some setups were touchier than others to get right, but they all worked when my assembly was done right(made a mistake or 2 or 3). most of them were beyond LOUD, with the scratchy/fuzzy sound like magnums topgun radios only more so. |
Therealporkchop
Member
Username: Therealporkchop
Post Number: 61
Registered: 11-2002
| | Posted on Friday, October 15, 2004 - 3:54 pm: |
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Well, I think I put it together right. Maybe my problem is from not having the board mounted in the radio while I was testing it. I don't know. I need someone who has put one of these into a Galaxy 44 to tell me what they did. I have this laying around on my bench and so far, no use for it. I'd like to do something with it, I'd like to see it work properly. Anyone out there used the CBC DSP in a Galaxy? |
Callingcq
New member
Username: Callingcq
Post Number: 7
Registered: 10-2004
| | Posted on Sunday, January 09, 2005 - 4:45 pm: |
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I bought one of the CBC DSP kits a few months back and im still haveing a hard time getting it to work.I cant get any audio out of it at all?or if I do get audio its so quiet you cant barely hear it?or it squeals realy bad?Anybody have a clue as to whats up with it?Oh yea its going into a uniden pc66a.Thanks CallingCq |
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 119
Registered: 9-2004
| | Posted on Sunday, January 09, 2005 - 7:29 pm: |
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callingcq, that is the same result i had with mine. i was putting it in a 142gtl. i think the secret to making these work is to use an oscilloscope. you probably have to start with a bone stock radio doing less than 80% average modulation. then use the o-scope to tune it right.
i also used to have a VSB-1 from selman enterprises (the secret cb guys) and it was touted to be the greatest thing since sliced bread. i wish i could find another one. if someone on here has one, email me and i'll buy it from you.
matt |
Bruce
Senior Member
Username: Bruce
Post Number: 2051
Registered: 9-2003
| | Posted on Monday, January 10, 2005 - 7:31 am: |
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DSP? KIT?
Hummmm never seen one.
Now i have seen SCAF kits for receive and audio processer kits like the TEN-TEC but NEVER a DSP kit that you could install inside a radio. |
Bruce
Senior Member
Username: Bruce
Post Number: 2054
Registered: 9-2003
| | Posted on Monday, January 10, 2005 - 9:21 am: |
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Dynamic Speech Processing ?
I got several ten-tec kita and a CBC and they do work but they are a cliper / compresser im still tring to find how someone came up with DYNAMIC ?
And how do you DYNAMIC audio? |
Callingcq
New member
Username: Callingcq
Post Number: 8
Registered: 10-2004
| | Posted on Monday, January 10, 2005 - 3:43 pm: |
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Are they really that sinsitive to adjust?I mean when I can finally get audio out of it,it is so quiet that you can hardley hear it.The radio im puting it in is bone stalk.One minute I have no audio the next minute theres muted audio or squealing?I have know clue as to whats up with this thing?Matt what you are telling me is,that this thing needs an oscope to work ?Stumped. Callingcq |
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 124
Registered: 9-2004
| | Posted on Monday, January 10, 2005 - 11:16 pm: |
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well, i never did get mine working right. make sure you have the impedance selectors on lo-z. also, i think this IC is very static sensitive. so try replacing it, it may just have gotten shocked.
bruce, i think they call it dynamic speech processing because it processes the dynamics of your speech. the one i was refering to is called the VSB-1 (voice signal booster). |
Callingcq
Junior Member
Username: Callingcq
Post Number: 10
Registered: 10-2004
| | Posted on Tuesday, January 11, 2005 - 1:05 am: |
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I have the jumpers set for lo-Z and have changed the Ic twice now using the grounded IC inserter.Il try one more Ic before I junk this worthless thing, Thanks.CallingCq |
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 129
Registered: 9-2004
| | Posted on Tuesday, January 11, 2005 - 10:12 pm: |
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just had a thought on these things. what is the actual output impedence of the unit on the lo-z setting? the reason i ask is because in looking through the owners manual for my mirage 2950, i saw that the microphone impedence was 400 ohms. i imagine this is pretty close to the value for most modern radios. im just curious if the output impedence on these DSP's is a mismatch.
so do me a favor; measure the output impedence on yours and tell me what it reads. thanks.
matt |
Tech291
Moderator
Username: Tech291
Post Number: 42
Registered: 11-2004
| | Posted on Tuesday, January 11, 2005 - 11:49 pm: |
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Kid,
If i remember right,the output impedance also was selectable on the cbc board.
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Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 133
Registered: 9-2004
| | Posted on Wednesday, January 12, 2005 - 9:44 pm: |
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you are correct, you can either select lo-z or hi-z, im guessing that the hi-z position is for tube gear. the reason im asking is because i was curious to know if there was a significant mismatch to most modern rigs and if this was the reason for their apparent finnickyness.
matt |
Callingcq
Junior Member
Username: Callingcq
Post Number: 11
Registered: 10-2004
| | Posted on Thursday, January 13, 2005 - 9:01 pm: |
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Its suppose to be set up so that lo-z is for the stock mic and hi-z is for power mics,either way has no effect what so ever in my opinon.As soon as I get the time I will measure the impedeance on both settings,from the output side of the unit power on and off.I would love to get this thing working but as of right now I think its a lost cause.Any more suggestions would be great.CallingCq |
Therealporkchop
Intermediate Member
Username: Therealporkchop
Post Number: 122
Registered: 11-2002
| | Posted on Wednesday, January 26, 2005 - 7:01 pm: |
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I have the CBC kit. I even emailed Mr. Franklin himself and told him the problem I was having. He returned (after several attempts to contact him) saying that I needed to install some filter caps and I needed to make sure my board was well grounded. And that I needed to make sure it was mounted in the radio before I tried to use it. I also have a scope using the capacitive pick method and if I get the modulation set to where there are no flat spots or flat topping of the wave, the radio sounds better without the kit than it does set this way. If I turn it up, then it squeals like crazy. I do know this, it has to be in a radio that is not modded. That sucks. Ss8541 has a shop close to me, and I've heard a radio he installed a processor in. It sounds great and does the job too. |
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 174
Registered: 9-2004
| | Posted on Thursday, January 27, 2005 - 3:46 pm: |
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i wonder which processor he installed in that unit.
im also still waiting to hear from someone who has used the VSB-1 from selman enterprises, the old Secret CB people. i really want to try one out in my 139xlr.
matt |
Bigbilly
New member
Username: Bigbilly
Post Number: 8
Registered: 2-2005
| | Posted on Saturday, February 26, 2005 - 12:45 am: |
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I've used so many of the speech compressors from CBC that I started etching my own boards and buying the parts from suppliers. These things will not work very well if you first destroy the radio by chopping out parts that were engineered in there for a reason. If you've built the board properly and put the radio back to it's original state of repair, start by setting the modulation to about 95% +/- a little. Then install the board away from the PLL section and try to stay away from the Mic amp too. I know, it's hard to find a good place. They are tedious to set, I'll give you that. But, these things will make a radio sound sooooo much louder while still being rather clear if not crystal. Use a scope to set the modulation NOT a watt meter. If you don't know how to use a scope or understand what you're looking at you probably wont ever get it right. I've succesfully installed them in unidens, cobras and galaxy radios. Galaxy radios with echo boards give me more problems but I can get them to work veeerry well. In galaxy type radios I usually go ahead and add a relay and filtering to the talkback circuit and that will help greatly.
bigbilly
ke5bbc |
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 234
Registered: 9-2004
| | Posted on Saturday, February 26, 2005 - 8:16 pm: |
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thanks for the input bigbilly, yeah, i figured that the reason i couldnt set it right was because i dont have a scope. never should have given the processor away though.
do you know anything about the VSB-1 from selman enterprises?
matt |
