Questions tagged [antenna-analyzer]
The antenna-analyzer tag has no usage guidance.
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Diagnosing antenna problem with RigExpert AA-600
Last fall I put up a 40ft tower with a Diamond X50 dual band antenna at the top. This antenna had previous been mounted at the corner of my house with no issues.
Since putting the antenna on the tower,...
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RigExpert AntScope2 is missing Data popup
I recently started using AntScope2 and everything was great. But all of a sudden the Data popup has disappeared. The missing popup is circled in the photo.
How do I turn it back on or get it back? ...
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Do you need to analyse the SWR of your radio repeatedly? Or periodically? If so, Why?
Let us assume that I have an adjustable antenna, between 160m - 6m. And let's also assume that using an antenna analyser I have estimated the SWR for that antenna for a specific frequency. If my ...
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Measurement of antenna with VNA does not match its specs
I have a NanoVNA V2 Plus (50kHz - 3GHz) and decided to test my LoRa antennas:
an unknown antenna delivered with a LoRaWAN gateway (RAK831)
a 868Mhz antenna from Linx Technologies (ANT-868-OC-LG-RPS)
...
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How can I replace the NiMH battery in an old RigExpert AA230 Antenna Analyzer?
I have an AA-230 Pro Antenna Analyzer.
Its similar about 5-10 years old with a failing battery. The battery will only hold a charge for a day or so, and only for minutes while in use.
I tried:
...
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How do I get my Windows 10 PC to consistently recognize my RigExpert AA-35 ZOOM?
I have connected my brand new RigExpert AA-35 to my Windows 10 PC via the provided USB cable, but the AA-35 does not show up in Device Manager. There is no COM port assigned to it, nor does it show ...
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What does an antenna analyzer tell me about these coaxial cables?
Note: more measurements added after graphs below
I recently acquired a RigExpert antenna analyzer and I am trying to learn how to use it to test cables. I took two cables to start with to try and ...
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UHF cubical quad VNA analysis interpretation (part2)
This is the follow up to:
UHF cubical quad VNA analysis interpretation
This is a S21 and S31 analysis of an oversized 385 Mhz 50 Ohm to 90 Ohm balun between 100 Mhz and 600 Mhz
I tested phase ...
- 173
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why is 3rd order intermodulation for 2110-2155 = 1710-1755?
Trying to calculate 3rd order intermodulation for a frequency range (2110 to 2155). I know the answer is 1710 to 1755, but I don't know how to get there.
attempts:
...
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Faulty MFJ-259 - meter hits end stop on power up
I have a faulty MFJ-259, the early model I believe. When I power it up, the power light doesn’t illuminate, and the meter needles hit the right hand end stops. I immediately power down as I guess ...
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Is it possible to measure antenna trap with MFJ225 without help of PC?
I have MFJ225 antenna analyzer. I measure coax trap filters by connecting this analyzer to PC and using IG_miniVNA application. That works fine.
But, sometimes I need to make such measurements in ...
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Why Coaxial Collinear Antenna Gives Strange Graph of Frequency Sweep vs SWR?
Antenna Analyzer gives a understandable results for a Quad Antenna (photos 1, 2 & 3), but gives strange results for Coaxial Collinear Antenna (photo 4)
Photo 1 of 4: Test setup for Quad Antenna
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How to measure gain of an antenna?
I have dual stacked crossed yagi antenna. How can I practically measure the gain of the antenna combination?
I know that this can be done in an anechoic chamber. But this is not feasible for me (...
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Is an antenna analyzer necessary for building antennas?
I'd like to try my hand at building a few antennas for VHF/UHF use. I'm going to be going approximately from established designs, but obviously the final result will require some tuning. I don't ...
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