Regardless of contests results there are other motivations that encourage us to move forward with PY0F project such as making Fernando de Noronha Island a more active DXCC entity. We hope to make this happen again more often!.
During July 22-28, improvements, modifications, and a lot of maintenance were carried out at the station aiming the CQWW 2019 Contests Season!
Despite the short period of only 5 running days a lot of work were possible to be done at PY0F.
The main goal this time was to redifine the layout of the antennas per tower and assemble the 2nd KLM KT34XA.
We have 2 main towers, named Tower 1 and Tower 3 (actually we have 2 more towers but they are not used for HF contesting 🙂 ).
Tower 1 – This is the strongest tower and it is placed strategically on the property. This is our main running tower.
Tower 3 – The antennas on T3 are planned to be used for S&P.
You may realize our towers are not high enough for an appropriate stack of tribanders BUT our goal is to improve the QSO rates with the possibility of fast antenna direction switching between NA/EU during the pileups.
Here the work begins…
This is how “Tower 3″ looked before the work:
Work performed on Tower 3:
Removal of vegetation from the base of Tower 3
Removal of all antenas from T3: 40m Yagi, KT34XA (1) and a VHF ant
40m Yagi – Fixed and Replaced reflector element
40m Yagi – Replaced the element to boom plates
40m Yagi – Installed new 1:1 HP balun (TNX OH2MM)
40m Yagi – Adjusted for better SWR curve on 40m
40m Yagi – Replaced faulty 1/2″ hardline coax
KT34XA (1) – Installed new 4:1 HP balun (TNX OH2MM)
KT34XA (1) – Moved this antenna to Tower 1
Removed A4S tribander from T1 and placed it below 40m Yagi on T3
This is how “Tower 3” looked after the work:
This is how “Tower 1” looked before the work:
Work performed on Tower 1:
Removal of A4S antenna and moved to T3
Moved 40m Yagi to the top of the mast
Placed KT34XA (1) taken from T1 below 40m Yagi
Installed the VHF Yagi between both antennas
Installed the new antenna side arm
Assembled and Installed the KT34XA (2) on the side arm
Installed new PST61D rotor
… and this is how the Tower 1 looked at the 5th day of hard work:
… and we still got some work to do “in the shack”:
Alpha 91b (x1) – replaced PTO
Alpha 91b (x2) – installed transformer that was removed for shipping
Power Supply – One more Icom PS125 power supply installed
Removed FT-1000MP for repair – shipped to mainland
Repositioning / organization of internal station wiring started.
Repositioned sockets at the bottom of the tables
110V / 220V markings placed on power outlet boards
Tasks to be done in the week before CQWW SSB:
Adjust SWR for the A4S Cushcraft
Stack match installation
Install new 80m vertical antenna
Install new 160m vertical antenna
Install 200m long Beverage in NA direction
Install 200m long Beverage in EU direction
Inside the station:
Get everything ready for the planned category… M/S? M/2?
Our host, Marenga, PU0FDN has just made some improvements on his guest suite and now (since February, 2019) has registered it on Airbnb.com and is available for rental for now and on.
So, now, if you plan to visit Fernando de Noronha Island, and would like to rest for some days in a simple but very friendly and peacefull place, you should consider visit his Airbnb site on this link.
Below there are some photos from this place. And here you can check his location on the island in Google Maps.
PS: The rental does not include the use of the Amateur Radio Station.
The contesting calendar for 2019 just began and PY0F is once again on the air!
This time, the contest was not our main goal. Since last CQWWs contests we had a lot of new ideas and so we prepared ourselves to put the station “in test” but not “in contest” once again – Hi!.
The main goals for this contest were:
Test the new RemoteQTH RX Antenna System;
Setup a 200m long beverage antenna in NA direction;
Setup and test a new and exclusive power distribution system for the linear amplifiers;
Stress the Alpha 374 linear after a long QRT on the bench;
Test the 4O3A HP BPF filters, specially the triplexer with 2 x 1kw signals in;
Test crossband interference between two HP stations running the actual antenna system;
Try to have some fun between all of that tests… tests.. and tests… Hi!
Ville and Renner met up in Fernando de Noronha Isl just a few days ahead of the contest. A lot of work had to be done before the contest, including the setup of a new and exclusive power distribution system for the amps. This was done by our host Marenga, PU0FDN and worked flawlessly.
The station is undergoing constant modifications according to the learning achieved in each operation and the ARRL CW is only the third contest in which we participate.
We had a lot of work setting up the RX antenna. The 200m long antenna, just crossed the borders of Marenga´s property. Fortunately the neighboor was very kind and allowed us to deploy the other half of the RX beverage antenna on his terrain. This antenna is not supposed to be fixed but will be setup and dismantled just after each contests end.
The first 100 meters of the beverage antenna had to be deployed in the middle of a dense forest. The wire in this part was just layed over the arbusts and trees. After this first hard part, already on the neighboor´s property, we made it easy to assemble the rest of the antenna.
Ville, OH2MM, used his criativity to make this wire support with 2 pieces of PVC pipes crossed in “X” form to support the wire. The height of the antenna varyed from 1.5 m to 3 m above the ground.
The beverage antenna was used together with the RemoteQTH RX antenna system. With this equipament we may share the reception of up to 7 RX antenna to up to 3 different operating positions. This system also includes 3 x BPF (for 160-80-40) and built-in preamplifier. The entire system worked like a champ. You can see some of the videos we made while testing the shared beverage antenna and cross band interference at same time.
This was also the first time we used 2 HP running stations into the 4O3A triplexer system. Personaly I got very impressed with the filtering capability of the system. Both stations were running around 1 to 1.2 kw on the same antenna at the same time and we did NOT realize any kind of any mutual interference.
In the image below you can see both operating positions. Both of them now with RX antennas controllers by RemoteQTH.
RemoteQTH controller: Its composed by 7 position rotary switch with led display in left, the 4 position switch for selecting internal BPF filters for 160-80-40-Bypass, single switch on/off for built-in preamp and in right corner, a 2 position switch for all system bypass.
This was my first contest on which there was NOT any signal of Murphy rounding us! Hi Hi.. Everything (for my surprise) run quite and smoothy. That was great. Thanks to our host Marenga, PU0FDN and Lola (Marenga´s XYL) for the super 5-star service.
We hope the station keeps moving forward and maybe, sometime we can definetively move to HP category. For now, mission, accomplished!!. And now goes our final score: