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QDX V3 SWR Sensitivity ?


 

I am receiving a V3 12v QDX today and I really want to use it with my Whizz Wand antenna but I am concerned about high SWR and potentially damaging my new QDX.?
The Whizz Wand (reincarnation of the original Wonder Wand), often has an SWR around? 2:1 on 40m, will that potentially damage the QDX ?
I really don't want to drag an swr meter around with me, the idea is to be as portable as possible but I also don't want to let the smoke out of this new transceiver.?


 

I hate to say it, but the QMX (with SWR protection) would have been a better choice.
Those loaded telescoping whip antennas have narrow resonance and can be finicky to tune.
For me, just touching the coax connector with my hand changes the resonant point and SWR.
I would not trust one with my QDX.
I always use an EFHW with it after verifying SWR.
My 2 cents.

73, Mike KK7ER


 

My personal opinion after reading MUCH about the QDX here, and my own experience.....you want some protection from high SWR and/or end of TX spikes especially with the BS170s. Diodes across the finals or L14.?

-Nate?
N8BTR


 

I use a MFJ 1979 with choke Balun and radials. Tune it with NANO VNA. Works great.

Mike Krieger


On Thu, Feb 22, 2024 at 10:22?AM Mike KK7ER <groupio@...> wrote:
I hate to say it, but the QMX (with SWR protection) would have been a better choice.
Those loaded telescoping whip antennas have narrow resonance and can be finicky to tune.
For me, just touching the coax connector with my hand changes the resonant point and SWR.
I would not trust one with my QDX.
I always use an EFHW with it after verifying SWR.
My 2 cents.

73, Mike KK7ER