Re: HF+ Dual Port vs HF+ Discovery


Alberto I2PHD
 

On 2021-01-22 18:03, prog wrote:
One possible modification to get a better response in the lower bands is to add a 3.3uH in series (just replace R3). This will make the input Hi Z and allow using the front-end as a "mini-whip" preamp. For a loop, a lower inductance might be required depending on its size and the transmission line.
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Thanks indeed Youssef, both for the MDS curves and the suggestion about the inductor. I will test that with a loop with two paralleled turns, to reduce its inductance. But first the weather should better a bit... :-)

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73 Alberto I2PHD
<<< http://www.i2phd.org >>>


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