| Author |
Message |
    
CM 3885
| | Posted on Tuesday, April 01, 2003 - 7:20 pm: | 
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Hello.
Do any of you techs have the scematics and the board layout for the AR 3500? Particuarly im interested in the parts layout(were the VRs are located and what to look for) for the AM recieve section and the NB/ANL section..... I need to tone down my radios AM reciever a tad. |
CM 3885
| | Posted on Friday, April 11, 2003 - 6:18 pm: |
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Well i thank ya!!! Ok, but heres a question..
Is there a mod out there for the 3500 NB/ANL circuit to make it more effective on AM? Like replacing a cap or a resistor with a higher value to make the circuit more effective? |
MrCowboy
| | Posted on Saturday, April 12, 2003 - 10:16 am: |
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Hello.. How do you like the AR-3500's receive?? Does it have a "high-gain/low noise" receiver? |
CM 3885
| | Posted on Saturday, April 12, 2003 - 12:46 pm: |
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The 3500s receiver is noisy on AM thats why im asking for a mod for the NB/ANL circuit... |
307
| | Posted on Sunday, April 13, 2003 - 7:41 am: |
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You can align the NB side of the circuit to work better , however the ANL is fixed (diode and cap) across the AM Detector and can't be changed HOWEVER go to Radio Shack , get a pack of GERMANIUM DIODES and put ""2" of them (back to back) on the anode side of the AM Detector to ground. This will stop all spikes greater that 3/10's of a volt to enter the Input Stages and greatly reduce noise and pulses. Back to Back means reverse one , lay it ontop the other in parallel. This works on any radio... |
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