Trim, Tune, and Test Two EFHW Antennas
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- Опубликовано: 5 авг 2022
- Today, I tuned and tested the @KM4ACK EFHW and the Spark Plug QRP EFHW. Both antennas performed excellently. I am such a fan of the KM4ACK antenna. Living in Western PA really makes it easy to go portable and throw an antenna in a tree and be on the air quickly. But I don't know what it is about the KM4ACK EFHW's design, but it is incredibly easy to build, with incredible performance. Here's where to get the two antennas in the video:
KM4ACK EFHW: km4ack.square.site/product/49...
Spark Plug Antenna: www.sparkpluggear.com/shop/p/... 
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Use the SWR Chart, it shows if the wire is long or short.
Nice video as always, Paul
Hey Rich, great to hear from you. I pray you and your family are well. Are you back up on the air in your new QTH?
@@K2PMD I'm hoping to maybe get the new rig on the air tomorrow. Not sure if it will happen but I'll msg you if I do!
Ok I have an odd question. I use a nanoVNA for tuning and have considered switching to a rig pro. I know that you can enter frequency and determine SWR. Do you have to enter frequency slightly above and below to tell which way that SWR curve is going to determine if you need to add or subtract wire length?
That's a good question. I have a rig expert and you put in a single frequency say 14200, and then you put in a range above and below, say 200. It will give an SWR sweep from 14000-14400. Of course you can change any of the figures.
What I like about rig experts is the multi-format, which allows you to put up to five frequencies and see how it tunes on several bands at once. The rig experts are really great tools. But they are not that much more accurate than a nano vna, which is a whole lot cheaper.