Author |
Message |
N4ari
| Posted on Monday, April 28, 2003 - 2:17 pm: |
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I peaked my Ranger TR-696F and it works great. However, I keep dead key down to 2 watts (swing to 10w) so the audio is clean when driving my amp. I noticed with about 5-6 w dead key, the swing reaches 20w. How can I have 2w dead key AND 20w swing? |
307
| Posted on Monday, April 28, 2003 - 9:13 pm: |
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Add about 6 1N4001 diodes in SERIES with the existing ANTI-SPIKING 1N4001 diode that is in the output trace of the audio transformer. This will drop the power at the same time keeping the swing up high... 307 |
Joker2
New member Username: Joker2
Post Number: 1 Registered: 4-2004
| Posted on Wednesday, May 05, 2004 - 5:55 pm: |
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Can this be done to a galaxy 33 radio also and if so, anyone have the diode number that is in the output trace of the audio transformer? And when you say in series with existing anti-spiking 1n4001 diode, you mean de-solder one side and continue on solidering the 6 in line in the same band direction and then solider the last one in the hole? |
Dindin
Member Username: Dindin
Post Number: 96 Registered: 2-2004
| Posted on Wednesday, May 05, 2004 - 8:38 pm: |
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307,read about that mod I think at Defprom.another version of that same mod was to use a 7.2 volt-1/4 watt zener in place of the 1n4001. |
Tech548
Moderator Username: Tech548
Post Number: 11 Registered: 5-2004
| Posted on Wednesday, May 05, 2004 - 10:57 pm: |
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Joker2 Try this. You'll get plenty of swing with your Galaxy-33. Remove R-238 and install a 1n4001 diode in its place with the banded end to the right towards the regulator. Cut R-249 and then set your deadkey to 1.5 to 2 watts. Removing TR-32 will give you more modulation and swing BUT, you will have to be very careful to where you now set your Mic-Gain. Using a power mic in combination with this modification has never been recomended by anyone that knows anything about an audio circuit. Jeff, kc0gxz. |
Weakeststation
Intermediate Member Username: Weakeststation
Post Number: 271 Registered: 7-2002
| Posted on Wednesday, May 05, 2004 - 11:18 pm: |
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DO NOT SNIP OR REMOVE TR-32... IT IS A NO, NO ON THAT RADIO!!!
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Joker2
New member Username: Joker2
Post Number: 4 Registered: 4-2004
| Posted on Thursday, June 10, 2004 - 6:50 pm: |
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thaks for you help guys!! Eric KG4GPM "Joker" |