| Author |
Message |
    
Sg569
Intermediate Member
Username: Sg569
Post Number: 110
Registered: 12-2004
| | Posted on Monday, May 02, 2005 - 12:29 pm: | 
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Ok Here my prob, I have to turn on the pre-amp to hear my buddy 6 mi away, he doesn't. I have been told that this could be a diode prob. Where are they? You can only get it so loud with the aligngment pots. Please help Somebody... Any body?
I have not been able to find info on thier local through the search feature, am I blind???
Thanks sg569 |
2600
Advanced Member
Username: 2600
Post Number: 561
Registered: 7-2002
| | Posted on Wednesday, May 04, 2005 - 3:52 am: |
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So uh, has it always been like this for as long as you've had it?
Or did it receive just fine and then quit? Maybe when you pulled up alongside somebody's BandSmasher 5000 when it was keyed up? If the radio was turned off when this happened, the damage can still occur this way.
There are, in fact a couple of specific "PIN" type diodes in the receiver, where the antenna circuit feeds into it. If your problem was created by a severe overload, or a surge from a nearby lightning stroke, these diodes can be damaged.
They almost never just "fail" on their own, without some external cause.
If the radio is used as a base, leaving the antenna connected during a storm could cause problems, even if a lightning stroke hits a tree across the street. Doesn't have to strike your antenna to cause a surge. Just something nearby.
73
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Bruce
Senior Member
Username: Bruce
Post Number: 2560
Registered: 9-2003
| | Posted on Wednesday, May 04, 2005 - 8:25 am: |
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Hummmmm ... did you get my e-mail? as for diodes there are mods to improve the grant which i have a copy of one mod is to change the diodes. |
Sg569
Intermediate Member
Username: Sg569
Post Number: 111
Registered: 12-2004
| | Posted on Wednesday, May 04, 2005 - 11:14 am: |
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Well I have parked near to a base station, by near I do mean 150-250 yards away. But for the most part the recieve has been quiet since I got it about 8 years ago, just recently it has gotten really bad.
Yes Bruce I did get your e-mail. Would that diode mod have come from the Grant Xl Owners Group site? if so I might have a copy of it as I printed out the mods from there.
Thanks sg569 |
Bruce
Senior Member
Username: Bruce
Post Number: 2561
Registered: 9-2003
| | Posted on Wednesday, May 04, 2005 - 12:17 pm: |
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Yes i have that owners group 10 page document if you need it just e-mail me with a address to send the CD. it is about 12 mb large. |
Bruce
Senior Member
Username: Bruce
Post Number: 2562
Registered: 9-2003
| | Posted on Wednesday, May 04, 2005 - 4:51 pm: |
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GOOD NEWS / BAD NEWS Not only do i have the owners site on cd ( FREE ) but if a deal goes through I just got a SUCH A DEAL buy on a VERY LIMITED NUMBER 2sc2999's. If i get them there will be some i can spare ........
NOTE NOT SELL !
I'll let evenyone know if i get them |
Sg569
Intermediate Member
Username: Sg569
Post Number: 112
Registered: 12-2004
| | Posted on Thursday, May 05, 2005 - 11:25 am: |
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That is good news. Thanks for the info. |
Albinowino
New member
Username: Albinowino
Post Number: 2
Registered: 5-2004
| | Posted on Wednesday, May 11, 2005 - 1:09 pm: |
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I have 2 grant xl radio's, on one of them I can set the am power from 0 to 4 watts out, the 2nd radio the lowest i can get the am power is 4 watts and top it out at 15 watts. I am trying to set these radios up to run with amps but have been told that the dk should not be over 2 watts to the amp. have you ever heard of 2 of the same radios working like this and is there anything that can be done to lower the am power |
