| Author |
Message |
    
Radioreddz
Intermediate Member
Username: Radioreddz
Post Number: 130
Registered: 9-2006
| | Posted on Sunday, August 18, 2013 - 7:36 pm: | 
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why is it that my RCI 2970 shows much higher swr's on the same antenna then my Galaxy 95T. with the 2970 swr's key at at 1.3 but when I talk they swing too 2.5 but I don't get the same thing with the 95T it keys 1.3 and stay there when modulating. the antenna is a V5000 maco. not using an antenna switch swapping coax into radios. |
Tech833
Moderator
Username: Tech833
Post Number: 2261
Registered: 8-2002
| | Posted on Sunday, August 18, 2013 - 9:28 pm: |
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Most likely because the 2970 is tuned improperly and splattering or transmitting spurious signals out of band when modulating.
Unless it was tuned using the factory tuning method, and done properly, then it isn't right. Techs that tune radios on a bench with nothing but a wattmeter and just peak for maximum power are the problem. That is WRONG!
Your radio 'Mythbuster' since 1998
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Radioreddz
Intermediate Member
Username: Radioreddz
Post Number: 131
Registered: 9-2006
| | Posted on Sunday, August 18, 2013 - 11:43 pm: |
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thanks for the quick answer i'm having a real hard time in the area I live in to get radios fixed right. I live in the DC Baltimore area guess i'll have to box it up and send it out. |
Scrapiron63
Advanced Member
Username: Scrapiron63
Post Number: 918
Registered: 12-2001
| | Posted on Monday, August 19, 2013 - 10:58 am: |
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What meter are you using to check the SWR. The CB type meters will show a higher SWR on forward modulation because the radio is transmitting more power if it's tuned correctly. You would need to reset the forward set on the meter to show accurate readings for those peaks. Which radio sounds best on the other end. The 95T might be keying too high and has little or no forward modulation. |
Dale
Senior Member
Username: Dale
Post Number: 1950
Registered: 12-2002
| | Posted on Monday, August 19, 2013 - 5:59 pm: |
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i can tell ya some places but not sure if the fourmmaster will allow it. if he says yes
ill list it
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
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Tech833
Moderator
Username: Tech833
Post Number: 2262
Registered: 8-2002
| | Posted on Thursday, August 22, 2013 - 1:13 pm: |
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Dale- Radioreddz has his email address in his profile. Just click on his user name to open his profile, then click on his email address and you can send the information to him directly.
Scrapiron- Not necessarily so. If your SWR meter reading climbs when you modulate, either-
1. Your radio is producing tremendous positive asymmetrical modulation.
2. Your radio is putting out spurious emissions.
3. The meter is poorly engineered, or of poor design.
Your radio 'Mythbuster' since 1998
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Radioreddz
Intermediate Member
Username: Radioreddz
Post Number: 132
Registered: 9-2006
| | Posted on Friday, August 23, 2013 - 2:04 am: |
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it's gotta be the radio and poorly tuned by the last tech. iv'e tried several other radios and the 2970 is the only one I get those results with of the high swr's |
Dale
Senior Member
Username: Dale
Post Number: 1955
Registered: 12-2002
| | Posted on Sunday, August 25, 2013 - 9:21 am: |
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after re-reading the first orignal post
when checking swr you DONT whistle into mic
just a straight carrier [deadkey] is needed
now as far as why its showing what it is
i do agree with tech 833. but your swr is still
1.3 readless. you,ll be fine to talk on it if
thats what your worried about
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
|
Charliebrown
Intermediate Member
Username: Charliebrown
Post Number: 294
Registered: 10-2002
| | Posted on Wednesday, October 23, 2013 - 7:57 pm: |
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I agree with Tech 833 and Dale you took the word's right out of my mouth. If you were to re-cal. when giving an audio or a constant tone you would see the same swr. Hey Dale I spoke with a neighbor of your's a year ago and he spoke highly of you. Of course I forgot his call sign. See ya later Hot Rod. |
Dale
Senior Member
Username: Dale
Post Number: 1984
Registered: 12-2002
| | Posted on Sunday, October 27, 2013 - 8:58 pm: |
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hey charlie how did you come into contact
with this person???as im not a ham. but do have
4 or 5 friends that are
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
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