Thursday, October 17, 2024

How the SLAMS tried to combine SPRINT Microwave with an expedition to Knob Lick in EM47tp

It was Saturday October 5 (2024), the day of both, MAD Day (stands for Microwave Activity Day) and SPRINT Microwave contest. The SLAMS group from Saint Louis decided to look for a new contest location in different than our own grid (EM48) and closer to other VHF+ stations. We have done similar explorer trip to that area 3 years ago (see our posting here) but did not find anything remarkably good at that time. Friends from the Saint Louis QRP Society (SLQS) told us about a hill they use for POTA activations and we decided to try that.

Herbert AF4JF, Harry WA0CNS, Ron KO0Z and Jim KK0U went to Knob Lick in EM47tp in the morning. We intended to try 1296MHz and 10GHz with our friends in EM64, EM65 and EM13. That's Tennessee, Alabama and Texas. The location is truly on the hill, one of the tallest in Missouri and it really looks good. Jim KK0U told us that this is an excellent place for HF activity, such as SOTA/POTA. First impression upon arrival was magnificient!



Nice find on the hilltop!


There is Texas somewhere in that direction


Fire tower on premises


There is a platform in the middle of the stairway


Jim KK0U climbed the stairs and shot this video from the accessible platform

As you can see in the video, there is 360 degrees open view above the tree level from that platform. The fence has holes big enough not to bother 10GHz signals, but probably not too good for lower bands, such as 23cm or even VHF, so we did not even try to carry the equipment (and batteries) up that high and set up on the ground instead.


Jim KK0U listening on 10GHz

Team setting up on the ground

On the other side were several guys. We have some pictures but to be honest, I am not sure which station belongs to whom:








We were communicating with the other groups using phones, SLACK and GroupMe chats, SMS messages ... one guy spoke for the group, so we do not even have all their names or callsigns. I have tried to work NV4B, WG8S, KV4PC, KY4G, W4RXR, K4NKT and AA5C. There were probably more and I apologize for not capturing all the callsigns.

To make this long story short - we did not make any QSOs. Not a single one. This was a microwave contest and distances were simply too long for the meager propagation that day. However, we are HAPPY with this location! We definitely will come back, probably for one of the VHF contests, with full set of bands 50MHz to 122GHz. Also, we will probably employ Q65 for microwave digi modes from there.

ARRL 10GHz And Up Contest 2024

As Ron KO0Z mentioned in his posting last month, we were planning on publishing two narratives about our biggest microwave contest of the year. I apologize for being a little late with my addition, there is not much left to say what Ron did not cover in his posting anyway.

Let's start at the begin. First half of the contest, Saturday August 17 (2024). Ron KO0Z with Debbie KC9ULA went to Frenchman's Bluff while I was packing my station in the morning (I have returned from a business trip just the night before). Harry WA0CNS joined me with his 10GHz station for the day. Since we shared my car, we did not have space for higher bands this time. Ron went somewhere West along I-70 while Harry and myself tried to find the Frenchman's Bluff. Surprisingly, we succeeded and even found shorter way than last time. Nice, warm (well, hot) weather, blue skies and no rain clouds in the direction towards West where the location is open to.

Ron KO0Z arrived at Moberly airport in EM39sl while we were in EM49ma It's just 85 miles or so, but we did not hear each other - neither on mine or on Harry's station. Ron just worked NA0Y on 10GHz so we assumed that his station was working and decided to take a look at the terrain profile later at home ... and Yes, the terrain seems to be the problem. We were at the very bottom on the right hand side:

Moberly - Frenchamn's Bluff path

From here, we went to Hannibal to our favorite Lover's Leap in EM49hq to join Kevin AD7OI. Ron covered that part nicely in his narrative, so I will only add that I was not able to hear the WB0LJC group in Minnesota although Kevin worked them SSB .. well, not only his 60W station makes its own path through the atmosphere, but it also receives very good. Subject to look at during the coming winter (I intend to replace mu LNA with new one from Kuhne). I worked K9JK across reasonable distance that day.






AF4JF and WA0CNS set up in EM49hq


Lover's Leap has a new "decoration"


Kevin AD7OI explaining ham radio to bystanders


Second half of the contest was more exciting. We only went out on Sunday September 22 (2024) and only to Louisiana in EM49lk. There were no rain clouds to use and generally nobody to work. Except Bruce W9FZ and Janice KA9VVQ who came close enough to us to make a QSO. It was hard, but we made 385km contacts! This was also the first outing where Jim KK0U joined us with 10GHz station.

Aiming towards EN42px from EM49lk



Jim KK0U operating 10GHz





Ron KO0Z on his truck