Showing posts with label EN50rl. Show all posts
Showing posts with label EN50rl. Show all posts

Saturday, October 20, 2018

Transmitting from the Gob

It's still dark at 6:30 am on Saturday, October 20th.  Winds were brisk and temps in the forties.  KO0Z made a coffee run and by the time he and AF4JF made it to the gob pile entrance, there was enough light to unlock the chained gate and make their way up the gob to the wind turbine (EM59ek) and aim their antennas towards Zack W9SZ 97 miles away on his hilltop location (EN50rl).

Ten GHz wasn't productive, but Ron's rig appears to be more frequency stable with his GPS 10 MHz oscillator and new batter booster.  Herbert did make a two-way QSO with Zack on 1.2 GHz.  All-in-all, not a bad way to spend a Saturday morning.

                           
                                            Sunrise on the gob, EM59ek



                              Herbert AF4JF setup for 1.2 GHz and 10 GHz



                                          Wind turbine at Farmersville, IL EM59ek


                                                       AF4JF's 1.2 GHz yagi.


                                Looking towards Zack's W9SZ hilltop location EN50 rl 97 miles away.

Friday, August 21, 2015

ARRL 10 GHz & Up Contest 2015

Saturday, 5:30 am CDT, not too bright and way too early, my alarm awoke me to get showered, to get breakfast and to be out the door by 6:30 am to make the trek from Girard to Ohlman Cemetery EM59ji to participate in the first weekend of the ARRL 10 GHz and Up contest.  Since I had loaded the rig in my car the night before, all I had to do in the morning was to make a thermos of coffee, connect my 10 MHz OCXO to my car's 12 VDC so that it will be warmed up and stable when I arrived at the cemetery about 35 miles away.

By 7:45 am, I was not only up and running, but I was copying the WB9PNU beacon, 78.3 miles away, 599 +!  A personal first for me!  I tried to make a contact with Ron, W9ZIH, but I noticed that a juniper tree was directly in front of me about 70 yards.  I moved west about 60 feet and Ron's signal went from no reception to 559!  He was able to copy me at his QTH near Malta, IL EN51nv, 176.3 miles away at 8:15 am!  I made a video of our QSO which is posted here, but the other two videos (WB9PNU/B and W9SZ are too large to upload to this blog site, but they can be seen on my Facebook page.




My next QSO was with Jim, N5MU in Missouri, EM48qf (109 miles away) with a 519 report at 8:22 am.  Zack, W9SZ entered the log next with a 599 from EN50rl.  Zack was roaring in here and I've never heard him louder at 9:10 am!  I then tried to work Jim, W9SNR in EN62cc, 203.8 miles away, but we only heard bits and pieces of our signals - nowhere good enough to constitute a QSO.  After these QSOs I was feeling stoked!  I knew that Zack wasn't planning to operate on Sunday so, on the spur of the moment, I decided to drive to EN40 and EN50 to activate those grids!

An hour and  a half later, I was set up in EN50aa and I worked Zack, W9SZ at 1:22 pm in EN50xf (102.5 miles away with a report of 589.  He heard me just fine and then at 1:43 pm I made a two-way QSO with Steve, N4PZ in EN52gb (145 miles away with a 529 report.  At 1:52, Ron, W9ZIH and I made a Q - a distance of 105 miles.  Mike, AA9IL was not able to set up in EN52xi, so we were not able to try the path.  Next time!  Now on to EN40!

EN40 is only about a half of a mile away from my EN50aa spot, but trying to find a suitable microwave site proved to be quite a challenge.  When I had scoped it out last November, there were soy bean fields, but now there were tall, corn fields.  I spent the next 45 minutes driving around the countryside to find a good spot only to end up about a mile from the EN50aa location.  In about ten minutes I was now QRV from EN40xa.  It was flat and soybeans to the east and northeast, but tall corn to the north.  I gave Zack, W9SZ a call and after some trial and error, I arose out of the noise and we worked each other at 3:20 pm with a 529 report - a distance of 106.9 miles!  I tried calling Ron, W9ZIH on the phone, but he wasn 't home unfortunately.  I tried Steve, N4PZ and he could tell I was there, but I wasn't able to copy his signals.  The corn was just too tall and I didn't have a better spot to relocate.  A nice farmer came by to inquire about the set up and he was glad to see the operation.  After wishing me luck, he was on his way and I awaited Jim, W9SNR to arrive at his site.  Unfortunately, thunderstorms kept him from getting on the hill and he decided to call it a day.  By this time I was hot, tired and hungry, so I was ready to call it a day as well.

All in all, it was a great day to be out and about microwaving.  I am seriously thinking about activating EM69 and EM68 for the second half of the contest this September.  Debbie could visit her niece attending Indiana State U, as a freshman, in Terre Haute and she could also offer ops another call sign to work!  We will see what my search of Google Maps reveals in terms of potentially high locations.


                                         A great microwave tool - an engineering compass!

                                 Another important microwave tool - a thermos of hot coffee!

                                               EN40xa looking towards Zack, W9SZ

                               EN40xa looking towards Steve, N4PZ.  The corn was just too tall.

                 EN40xa looking southwest towards St. Louis.  Too hilly and corn is too tall.

Saturday, September 29, 2012

SPRINT Microwave on September 29, 2012

Herbert AF4JF, Jim N5MU and Rich N0PQU met at YMCA in EM48sq for last microwave contest of the season. We didn't have big contesting plans, just intended to try with Zack W9SZ who went to EN50rl on 1296MHz/10GHz and Ron KO0Z who went to his new location in EM59cl this morning on 10GHz too.

Propagation didn't really look promising - a little Hepburn enhancement, some water vapors, but nothing really promising from our usual sources of prediction:



(I believe that this made the difference today)


The day started quite bad - Herbert has forgotten his 23cm antenna and Jim forgot to bring his antenna pole, so we have had to combine our hardware into one 23cm station. It didn't matter much, because we didn't work Zack on 23cm today. Zack copied Jim's signal S5 on 1296.100MHz but Jim didn't copy Zack this time. Oh well ...

However, after a year of trying and trying, we have both finally worked Zack W9SZ in EN50rl from YMCA in EM48sq! That is a #5 grid for Jim and #6 for Herbert from this particular location. Thanks for all your patience with us, Zack! There are no terrain obstacles between us, but the distance is over 160 miles, so it requires a little help from propagation. Following picture shows the terrain profile between both locations:


Wonder of all wonders, it has worked today! Zack didn't hear the St. Louis beacon on 10GHz, but he has heard a 2.3GHz beacon from Chicago unusually strong, so something has been happening this morning.

Following picture shows Jim working Zack on 10GHz. We have had to move Jim's station close to Herbert's, because there was no signal from Zack at all 10ft. down the parking lot!


We have tried with Ron KO0Z on 10GHz after working Zack, but didn't succeed this time. Well, we have always tried much earlier in the day before ...

One more achievement can be claimed today - Rich N0PQU tested his 10GHz transverter today. He uses a MACOM brick oscillator on 10224MHz with a mixer and IC251 radio (more info about modifying that radio here).


Signal from this simple transverter was very stable, Jim N5MU and Herbert AF4JF have both made SSB  contacts with N0PQU across the parking lot. Although there still are things to be improved, Rich has certainly made it to the qroup of 10GHz-capable stations in St. Louis area. Congrats!

73 Herbert
AF4JF