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Roger Shepard
| | Posted on Friday, August 03, 2001 - 10:50 pm: | 
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I recently purchased a new Galaxy 225 amp to run on my sideband radio which is hooked to a set of beams. Since the amp is mobile, i hook it to a large new deep cycle battery with #10 wire. After getting every thing hooked up and going, I noticed that on AM I was only getting a little over a hundred watts. On sideband I got 225 to 235 and it worked perfect. It also worked what i thought was good on AM but at half of what i thought and it had no swing what so ever. If any thing it swung backward. I know my radio swings foward and was in good condition. So I took the amp back to where I bought it thinking something was wrong and the man hooked it up on the bench to my radio and on AM according to his meter it put out a great deal of power and swung even more.I couldnt believe it! The best part was he had it and my radio, which is also a mobile, hooked to a 6 amp power supply and got all that power out of it and the amp at the same time. What gives! I didnt dare ask him to try sideband because he was blowing me away on AM. Here he was on 6 amp and I have 500, and I run my radio on a seperate 12 amp power supply, and he was getting way more than twice what I was. He looked at me and said I told you nothing was wrong. So i brought it home and have used it eversence. My standing wave is 1:1 on my beam and it still puts out barley over a hundred. Can some one tell me what my problem might be, and how did he get so much with such a little power supply. Roger, kentucky |
vernonott
| | Posted on Saturday, August 04, 2001 - 8:36 am: |
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Ask him to run everything through your meter.Either your meter is stingy or his is modified to impress you. |
Tech181 (Tech181)
| | Posted on Saturday, August 04, 2001 - 12:43 pm: |
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Roger Shepherd,
You said he got more than twice what you were getting out of it on a 6 amp power supply? 200 watts out of a 6 amp supply? No way!
If he was getting 200 watts out of an amplifier connected to a 6 amp supply his watt meter is fixed, or else it needs to be.
Steve
Tech181
Tech181@copperelectronics.com |
Anonymous
| | Posted on Saturday, August 04, 2001 - 7:53 pm: |
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What kind of meter was the guy running? what kind of meter are you running? 13.8vdc X 6A = 82.8 watts at 100% efficiency(impossible)You might show 100w P.E.P. on your meter. |
Roger Shepard
| | Posted on Saturday, August 04, 2001 - 6:22 pm: |
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He not only had the amp but the radio on that six amp and dont forget that forward swing. I dont know why I run #10 guage, his was at least 16. I have never knowed my meter to tight but compared to his my meter is more than tight. I admit on sideband my meter might not be right because it will not read peaks but still. Who can give some advice as to my low power on AM, if in fact it is low. It really heats up quick on AM for the wattage it show as compared to sideband even though on sideband it show far more. thanks |
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