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Author Topic: Low Frequency VSWR measurements  (Read 820 times)

Offline PurelyNonsense

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Low Frequency VSWR measurements
« on: 03-23-2017 -- 16:06:43 »
Good afternoon all,
I wanted to know if anyone on here has a good method for measuring VSWR below 10 MHz. I need it for 450 kHz up to 1 GHz. From 10 MHz and up, we have a VSWR bridge by Anritsu but I'll need it lower. Is there a good bridge out there? Or a good method that I'm missing? Thanks.

Offline Hawaii596

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Re: Low Frequency VSWR measurements
« Reply #1 on: 03-23-2017 -- 18:28:32 »
Agilent 86205A is good from 300 kHz to 6 GHz. Simple to use.
"I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind."
Lord Kelvin (1824-1907)
from lecture to the Institute of Civil Engineers, 3 May 1883

Offline microwave-kevin

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Re: Low Frequency VSWR measurements
« Reply #2 on: 11-07-2017 -- 04:00:17 »
The Anritsu / Wiltron bridge is about -40dB so that will give you 1.02, the special option bridge will give you > 46 dB 1.01, what are you looking for. If you are below 10MHz treat everything as DC/AC not K3-K4.

tex

Offline dminesinger

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Re: Low Frequency VSWR measurements
« Reply #3 on: 11-07-2017 -- 04:16:49 »
HP/8721A, 100 kHz to 100 MHz.
PapaBear

*'It's the Veteran, not the reporter who has given us the freedom of the press.'
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Offline briansalomon

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Re: Low Frequency VSWR measurements
« Reply #4 on: 11-08-2017 -- 00:14:13 »
A Keysight N9913A Fieldfox will give you a readout in VSWR down to 30Khz.

http://www.keysight.com/en/pdx-x201901-pn-N9913A/fieldfox-handheld-microwave-analyzer-4-ghz?cc=US&lc=eng



 


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