As of 2022 there are many badly performing clones on the market. V2/3GHz NanoVNA uses parts like ADF4350 and AD8342 which are costly and clones have been cutting costs by using salvaged or reject parts.
See official store and look for V2 Plus4/V2 Plus4 Pro versions only to avoid getting a bad clone. We have stopped selling V2.2 versions since October 2020, so all V2 hardware that are not Plus or Plus4 are not made by us and we can not guarantee performance.
Hi
Can I measure choking impedance of a choke balun using this? If so how?
Appreciate your help on this.
Cheers
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-------- Original message --------From: "vk2qv via groups.io" <vk2qv=yahoo.com@groups.io> Date: 2020/06/27 11:35 (GMT+02:00) To: NanoVNAV2@groups.io Subject: [NanoVNAV2] Measuring Choking Impedance Hi Can I measure choking impedance of a choke balun using this? If so how?Appreciate your help on this.Cheers
i measure attenuation between port 0 and port 1 and connect the baluns
shield to the two ports hot wire (inner conductor)
you wanna measure how much choking the balun has so you have to connect
the 2 ports to the two spots between you wanna see the "attenuation" ...
means connect both shields (balun in and out) to both hot wires of the
analyzer ...
you should measure a high attenuation between the 2 ports (the choking
impedance represents a high resistance)
hope that helps
greetz sigi dg9bfc
Am 27.06.2020 um 08:38 schrieb vk2qv via groups.io:
thank you so much sigi for the quick reply. my vna v2 is on the way.
cheers, ras vk2qv
On Saturday, 27 June 2020, 08:59:05 pm AEST, Siegfried Jackstien <siegfried.jackstien@freenet.de> wrote:
i measure attenuation between port 0 and port 1 and connect the baluns
shield to the two ports hot wire (inner conductor)
you wanna measure how much choking the balun has so you have to connect
the 2 ports to the two spots between you wanna see the "attenuation" ...
means connect both shields (balun in and out) to both hot wires of the
analyzer ...
you should measure a high attenuation between the 2 ports (the choking
impedance represents a high resistance)
hope that helps
greetz sigi dg9bfc
Am 27.06.2020 um 08:38 schrieb vk2qv via groups.io:
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