| Author |
Message |
    
Rebel3712
New member
Username: Rebel3712
Post Number: 9
Registered: 5-2004
| | Posted on Wednesday, March 14, 2007 - 7:39 am: | 
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i have a ringo ranger 2 meter ant the swrs are 1.2 on 5 and 15 watts but when i up the power to 50 watts they go over way over 3.8 any ideals i have tried tunning and every thing and no such luck? |
Tech833
Moderator
Username: Tech833
Post Number: 1624
Registered: 8-2002
| | Posted on Wednesday, March 14, 2007 - 10:39 am: |
|
Sounds like your radio may be either spurious at high power or producing harmonics at higher power. When SWR changes with power, it is almost always the radio, not the antenna. |
Bruce
Senior Member
Username: Bruce
Post Number: 4380
Registered: 9-2003
| | Posted on Wednesday, March 14, 2007 - 1:35 pm: |
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agree sounds like the radio when the output is dirty the swr goes up because the junk is outside the frequency that the antenna is tune to.
try another radio and see what it does .... |
Tech237
Moderator
Username: Tech237
Post Number: 721
Registered: 4-2004
| | Posted on Wednesday, March 14, 2007 - 4:25 pm: |
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I came across situation like this once in the past where the problems was not the radio -but the coax.
Seems the dielectric was starting to break down at higher power levels. Although I cannot see this happening too easily at only 50w it may be something to keep in mind.
Simon
Tech237
KD7IEB
|
Rebel3712
Junior Member
Username: Rebel3712
Post Number: 10
Registered: 5-2004
| | Posted on Wednesday, March 14, 2007 - 8:37 pm: |
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k i tried a differnt radio same thing guess ill try changeing coax thanks for the help |
Slim1
Intermediate Member
Username: Slim1
Post Number: 137
Registered: 4-2002
| | Posted on Thursday, March 15, 2007 - 7:37 am: |
|
try different jumper between the rig and the meter
and compare the readings.
Slim |
