| Author |
Message |
    
Skilletlicker
Intermediate Member
Username: Skilletlicker
Post Number: 211
Registered: 5-2002
| | Posted on Sunday, May 15, 2005 - 11:10 am: | 
|
sometimes it is recomended to cut a resistor to
increase modulation.why couldnt the resistor be
removed and replaced with a adjustable pot.that way you could regulate the modulation and prevent over modulation. what size pot. would i need
skilletlicker
|
Bigbob
Senior Member
Username: Bigbob
Post Number: 1901
Registered: 12-2001
| | Posted on Sunday, May 15, 2005 - 4:27 pm: |
|
1/4 WATT 10k.Bigbob |
Crackerjack
Intermediate Member
Username: Crackerjack
Post Number: 489
Registered: 7-2004
| | Posted on Sunday, May 15, 2005 - 6:35 pm: |
|
What size resister are you cutting?
Usually, actually it is a diode you are cutting.... Right? |
Crackerjack
Intermediate Member
Username: Crackerjack
Post Number: 490
Registered: 7-2004
| | Posted on Sunday, May 15, 2005 - 6:40 pm: |
|
Actually, a smart thing to do is cut the whatever, and use a power mic -you can adjust the modulation from the back of the mic, get maximum clear modulation and not have to solder anything to the radio.
When I do the xl-510's for our missionary vehicles, I install a D-104 handheld. This works real well for us.
Put the battry on a maintenance schedule. |
Iluvrf
Member
Username: Iluvrf
Post Number: 73
Registered: 2-2005
| | Posted on Sunday, May 15, 2005 - 9:16 pm: |
|
The smart thing to do is leave the mod limiter intact. You should NEVER cut the limiter. It is there for a reason. You cut it and run a power mic on them?? Talk about a splatter box |
Bigbob
Senior Member
Username: Bigbob
Post Number: 1905
Registered: 12-2001
| | Posted on Sunday, May 15, 2005 - 9:26 pm: |
|
Yeah,most of the dx type radios can have the trimmer turned to overmodulation without cutting the resistor,all cutting the resistor does is disable the amc and alc and you get a muddier audio on ssb when not driven to distortion,better to bridge the trimmer control with a pot and leave the resistor alone.Bigbob |
Crackerjack
Intermediate Member
Username: Crackerjack
Post Number: 495
Registered: 7-2004
| | Posted on Sunday, May 15, 2005 - 10:05 pm: |
|
Iluvrf :
The point of a good power mic, is that you can turn the power down, as well as up. I am not a redneck who turns everything up to max.
Some radios, like Uniden have limiters that limit the modulation, no matter what you put into them -they are always under modulated due to the limiting zener diode.
Cut that diode and you can use a power mic to feed any level of power to the circuit -from no audio to splatter. But you can control it.
|
Bigbob
Senior Member
Username: Bigbob
Post Number: 1910
Registered: 12-2001
| | Posted on Monday, May 16, 2005 - 6:14 am: |
|
That's the way they used to do it on the old 23 ch. rigs.Bigbob |
Hotwire
Intermediate Member
Username: Hotwire
Post Number: 356
Registered: 1-2005
| | Posted on Monday, May 16, 2005 - 7:53 am: |
|
Hey I turn everything up to maximum! My power mic goes up to 11.Keep my coffee cup warm atop my amp! Maybe thats why the locals around here dispise me......Oh yeah! I do leave my limiters be.I would never hack & chop my beloved radios. Loud and clear always. 0 garble, 0 static who wants to modulate? |
Crackerjack
Intermediate Member
Username: Crackerjack
Post Number: 496
Registered: 7-2004
| | Posted on Monday, May 16, 2005 - 9:34 am: |
|
Hotwire:
I believe you, I hear electronic hummmmmm, when I read your post. LOL |
Hotwire
Intermediate Member
Username: Hotwire
Post Number: 358
Registered: 1-2005
| | Posted on Monday, May 16, 2005 - 10:22 am: |
|
he he he lol snicker snicker. Ok OK I do back down when my hair starts sticking up. |
Funtimebob
Intermediate Member
Username: Funtimebob
Post Number: 157
Registered: 5-2002
| | Posted on Tuesday, May 17, 2005 - 2:56 pm: |
|
I always like to prop one side of my radios up. that way I can tell everybody im running a "leaner" snicker ,snort, gaffaw |
Road_warrior
Advanced Member
Username: Road_warrior
Post Number: 570
Registered: 7-2004
| | Posted on Tuesday, May 17, 2005 - 9:40 pm: |
|
Anymore i just leave the modulation limiter
intact in my radios.
Years ago i had them cut out of alot of
my radios. Loud they were...LOL...
Let us know how that pot idea of yours
works out Skilletlicker.
JIM/ PA/ CEF 375 |
Hollowpoint445
Intermediate Member
Username: Hollowpoint445
Post Number: 287
Registered: 6-2004
| | Posted on Saturday, May 21, 2005 - 6:24 pm: |
|
Skilletlicker - That's a common mod on the newer Washington because they don't come with an adjustable pot. Depending on the radio you're thinking about modifying there might be documentation on the web about what value to change the resistor. |
Patzerozero
Advanced Member
Username: Patzerozero
Post Number: 800
Registered: 7-2004
| | Posted on Monday, May 23, 2005 - 10:15 am: |
|
clip the limiter & put it on a switch... |
