[TowerTalk] Rain drops noise on Yagi (dipole)

[Chuck Dietz]

There is nothing I know of that can be done to that antenna that would help
except to have a lower one to listen on when it is raining. Perhaps you
could build a receiving antenna for the low bands like the SAL-30, or
something similar. That would probably be the best solution. I have been
annoyed by rain static many times. I just switch out the highest antenna on
receive. Some of the stack matches will allow automatically receiving on
different antennas than the transmit antennas. In a stack, I transmit on
all the Yagis and receive on the lower ones when there is rain static.

Chuck W5PR

On Sun, Dec 2, 2018 at 4:44 PM Guido Tedeschi <guidoted at gmail.com> wrote:

> On our contest station we have an old but good KLM 3 element linear
> loaded Yagi for 40m, 20m high, which works fine except for the high rain
> drops noise on RX.
>
> Normally we have an average noise floor of S1, but during last CQWW SSB
> and CW contest, we suffered rain during nights and the noise on 40m
> raised even to S7-8 when the rain was strong.
>
> Is there anything I can do, to avoid or greatly attenuate that noise?
>
> There is a coil across the dipole feed (sometimes called Hairpin), to
> match the impedance to 50 ohm, followed by a current balun/choke; what
> if I connect the center of the coil to the boom/ground, could this help?
>
> Thanks and 73
>
> Guido, ik2bcp
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>