Ed, WB4RHQ presentation on Task Book, training and WCARES membership requirements

Our EC, Ed Hudgens, WB4RHQ did a presentation on the Task Book, training and WCARES membership requirements during the June Virtual Monthly Meeting. You can find a copy of Ed’s presentation here:

https://wcares.org/wp-content/uploads/2020/06/WCARES-Task-Book-and-Training-Requirements.pdf

Cliff gave a detailed overview of the plans for Field Day – look for details in the WCARES Notes e-mails.


Maximize your signal reception – a presentation by Tim, AD4CJ

Tim, AD4CJ talks about how to get the most out the sensitive receivers in most modern HF transceivers.

https://youtu.be/8cUUvxnGM4w

In this video, Tim covers:

  • how to fine tune
  • how to zero-beat phone and cw signals
  • automatic gain control (AGC)
  • the RF-gain control
  • pre-amps and attenuators
  • noise-reducer and noise-blanker circuits

How do antenna tuners work?

Dave, KI4PSR gave the Technical talk at the February Monthly Meeting with the first in a series of presentations on antenna tuners.

In this first installment Dave covered the basics of antenna tuners and dispelled some myths (a tuner does not improve the radiation efficieny of the antenna.) An overview of reactance concepts, reactive matching and an introduction to L-network tuner configurations were next followed up with a brief demonstration.

Dave says this presentation was inspired by the work of Davide, IZ2UUF

https://www.iz2uuf.net/wp/index.php/2019/03/22/how-does-a-tuner-tune/

and provided a link to one of IZ2UUF’s youtube videos on tuner losses:

https://www.youtube.com/watch?v=mmVMQbXmaHA .

Dave’s presentation is here:

https://wcares.org/wp-content/uploads/2020/02/KI4PSR_HOW_DOES_AN_ANTENNA_TUNER_WORK.pdf

along with pictures of his demonstration setup: