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Author Topic: Im puzzled!  (Read 3434 times)
W5WSS
Member

Posts: 1772




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« Reply #15 on: May 09, 2013, 02:16:51 PM »

Ok Lamar you need to acquire a dummy load connect it and using the dummy load  emulate all the conditionswhere you are noticing problems band and frequency then look to see if there is a difference.
The dummy load will be accurate and should ensure by virtue of being a stable load will eliminate any erroneous effects caused by RF common mode so that you can then determine whether or not the power supply is excessive voltage drop or not.

Then systematically diagnose to the next plausible anecdote.

Every anecdotal suggestion mentioned above can be the problem or a combination thereof.

You will find it

73
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W5LZ
Member

Posts: 477




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« Reply #16 on: May 13, 2013, 08:57:01 PM »

What radio are you using, and what's it's typical current draw at full power?
 - 'Doc
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WD8KNI
Member

Posts: 153




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« Reply #17 on: May 14, 2013, 02:23:11 AM »

Are you ever going to answer the basic troubleshooting questions that have been asked by others?

1) What are your results into a dummy load? What is the power output on all bands?. What is the current drawn on each band? use the middle of each band.  If you are using a tuner get it out when using the dummy load.

2) Are the radials you are using a 1/4 wave in length, a minimum of 2 per band?  If you have raised the antenna from the ground you must use tuned radials, not random length.

Also what the the actual voltage when transmitting at two points. 1) at the power supply output, and 2) at the radio, don't tell me what the meter on the power supply says..  what meter are you using to get the readings (manufacture, digital, analog)?

All of us need this basic information if you want help...   knowing this we can go to the next step if needed.. Fred

Fred
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