GunfleetSand
Well-Known Member
It was down (removed )at last test, same result.
VSWR VHF antenna trimming
- Thread starter GunfleetSand
- Start date
Refueler
Well-Known Member
I have the Nissei Digital SWR Meter for VHF / UHF .... designed specifically for this job. Manual attached so you can see all details
NISSEI RS50 Digital SWR Power Meter 125-525MHz UHF VHF Female LED Screen Antenna Radio Communication Watt Testing Counter - AliExpress 509
https://video.aliexpress-media.com/...4000274384676.mp4?from=chrome&definition=h265
I suggest not to buy a general SWR meter as they became common during the CB craze ... they have wide range use - but as I understand - are biased to work better in the lower freq's.
I also have the GY561 Freq and Power Meter - this being used to measure the output freq and actual out power of the Tx ... bought when I was playing AIS and VHF setups ... but for OP - this item is not really needed.
NISSEI RS50 Digital SWR Power Meter 125-525MHz UHF VHF Female LED Screen Antenna Radio Communication Watt Testing Counter - AliExpress 509
https://video.aliexpress-media.com/...4000274384676.mp4?from=chrome&definition=h265
I suggest not to buy a general SWR meter as they became common during the CB craze ... they have wide range use - but as I understand - are biased to work better in the lower freq's.
I also have the GY561 Freq and Power Meter - this being used to measure the output freq and actual out power of the Tx ... bought when I was playing AIS and VHF setups ... but for OP - this item is not really needed.
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oldgit
Well-Known Member
My AIS aerial is only about a metre away from one of my VHF antennas ie less than the the suggested ? wavelength apart.
No noticable effect whatsover to SWR on either aerial.
Need to know just how bad the SWR actually is, very rarely will that perfect SWR be achieved.
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Refueler
Well-Known Member
I doubt SWR will reveal much about this ... the problem with too near antenna's - is the radiated pattern ....
GunfleetSand
Well-Known Member
@Martin_J I notice in a similar thread you are using a Dimond SX200, I think the unit tests output of VHF and also SWR levels? Would you consider that unit a one stop shop?
While the Nanovna looks tempting I don't think it can test power output? I'd rather not have two machines IE a Nanovna + Nissei RS50.
Quite confusing, I might find a friendly radio ham shop if they still exist and explain my situation !
While the Nanovna looks tempting I don't think it can test power output? I'd rather not have two machines IE a Nanovna + Nissei RS50.
Quite confusing, I might find a friendly radio ham shop if they still exist and explain my situation !