Field Report: Pairing the Yaesu FT-817ND, LDG Z-100 Plus, and CHA Emcomm III Portable at Tuttle Educational State Forest

On my way back to the QTH, April 21, 2021, I popped by Tuttle Educational State Forest for what I hoped would be a relatively quick activation.

The previous day I performed a SOTA activation of The Pinnacle and was still feeling the high from that brilliant solar flare propagation experience. Although I knew the solar flare effects were long gone over 24 hours later, I wanted to take in a quick hike and play a little radio: Tuttle was the perfect place for both.

Plus, Tuttle Educational State Forest is such a peaceful quiet place (that is, when no one is burning up rounds at the nearby shooting range). The park is never crowded and it has wide open spaces for playing radio.

My plan was to do a quick activation, then hit their longest trail loop through the forest.

Gear:

Tuttle Educational State Forest (K-4861)

Another reason I stopped at Tuttle was to test the LDG Electronics Z-100 Plus ATU.

In the spirit of full transparency, LDG sent this unit to me at no cost when they became a sponsor of the SWLing Post and QRPer.com recently (you may have noticed their ads in the right sidebar). While I was really curious how well the Z-100 Plus pairs with the Icom IC-705–using the supplied command cable–I didn’t have a (charged) IC-705 with me. Instead, I pulled out the trusty Yaesu FT-817ND and hit the air!

The Z-100 Plus is RF-sensing, so a command cable is never needed and the ATU will pair with any transceiver.

To use the Z-100 Plus with the FT-817ND, I only needed to hit the Tune button on the front of the ATU then send a string of dits or dashes for it to initiate a match search.

It was no surprise that the Z-100 Plus easily found matches with the Emcomm III Portable.

I started calling CQ on 80 meters and quickly worked my buddy WD8RIF in Ohio.

After a few minutes, I moved up to the 40 meter band where I worked four stations in about four minutes, then the band was quiet for a few minutes.

I then moved up to the 30 meter band and worked four more stations in about seven minutes then silence again.

At this point, I only needed one more contact to validate my POTA activation to have ten stations logged, so I moved up to the 20 meter band and in about four minutes worked two more.

If I didn’t have a limited amount of time and a strong desire to fit in a hike that afternoon, I might have called CQ a while longer on 20 meters and possibly even 17 meters, but I called QRT after a total of 36 minutes on the air.

Herein lies the advantage of having a portable ATU: it gives you frequency agility. On days when propagation is rough, and contact roll in slowly, a good ATU will allow you to find matches on multiple bands so your transceiver will be happy pushing RF through a non-resonant antenna length. I love resonant antennas, but it’s hard to beat the flexibility an ATU gives you.

[My next video, by the way, will feature the Z-100 Plus connected to the IC-705. ]

QSOmap

Here’s how my contacts looked that day on a QSOmap:

Video

Here is one of my real-life, unedited videos of the entire activation:

I was so busy making the activation video, I didn’t think about taking photos of my rig.

During the hike, however, I did snap these two:

It’s fun returning to the same parks and seeing how the flora changes with the seasons. There’s always something new to see.

I think the next time I activate Tuttle, it might be from the trail–I located a couple of spots that would be ideal for a park bench activation! That might make it feel a bit more like a SOTA activation (although, there are no summits in this forest).

Thanks again for reading through this activation report. Please comment with any questions or feedback. Very curious what LDG Z-100 Plus owners think of this ATU.


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