I’m using a Heathkit SB220 since 1995. I bought it used. It has been built in 1980 by an Italian Amateur. This year I wanted to modernize it to keep it at a good level of performance.
Ho deciso di usare il kit RM-220 della Harbach Electronics. Il kit permette di sostituire completamente il sistema di retificazione e i circuiti di misura del PA.
I decided to use the RM-220 Harbach Electronics kit. It allows to sostitute the entire rectifier system and the meters circuits.
We continue the renovation of the Heathkit SB220 Power Amplifier.
Remove the 15 sheet metal screws that hold the perforated cover in place and remove this along with the top rear plate cover. Save the screws in a safe place. Be careful not to remove the screw that supports the insulating spacer that shorts to ground the positive high voltage, for safety reason, when the top cover is removed. The photo shows the small isolating spacer tied up the cover.
.We can disassemble the old rectifier circuit board. Remove the four screws holding the old rectifier circuit board to the tapped spacers on the capacitor bank bracket. Put the four screws in a safe place. Unsolder old wires from the boad. It don’t require remember the positions. The wires’s colors will help us reconnect them on the new circuit board.
I got it. 3Y0J Bouvet Island 2023, the DxPedition of the year, the second one in the most wanted list, is on my bag. I follow the international team since the departure from Falkland Islands, with sail boat MARAMA. They sailed through the south Atlantic Ocean for 12 days, before drop anchor in an island bay. Bouvet Island lie quite at same latitude of Cape Horn, The extreme south of the Land of Fires, Argentina. Who has pass Cape Horn, like me, knows even durin the austral summer, from 21 december to 21 march, the weather conditions in that latitudes coul be very bad indeed. Here is the boat course.
Less than three months to the ARI Dx Contest 2023. This year it will take place the first weekend of may the 6 and 7, 2023. The rules remaining the same as last year. We hope that issue to logs upload system, will not happen this year.
This is the link to full .pdf rules for non-Italians participants. The contest is managed by ARI Associazione Radioamatori Italiani and on behalf of A.R.I. HF Contest Committee by Filippo Vairo, IZ1LBG, A.R.I HF Contest Manager.
I see you the next post about ARI Dx Contest 2023.
73 de Fiorino/I3FDZ
During the month of january 2023, working 60 radioamateur stations celebrating the WARTC 2023 award Italy, I got it.
This year the WRTC, the olympic games of radio amateurs, will take place in Italy, in the Emilia Romagna region with capital city Bologna, during the IARU contest that will take place the second weekend of july, this year the 8th and 9th 2023. Word wide radio amateur stations are encouraged to participate to contact the special call stations engaged in the WRTC challenge.
I’ll be there too, but not among the competitors. 73 de Fiorino/I3FDZ
This year I participate on the CQ WW160 CW 2023 on the high power category, it has been quite easy. My entry was single operator high power assisted. I borrowed from the local radio club a final amplifier to help my TS850. The amplifier is a Drake L7 with the two tubes quite tired. With 80 Watt input i got less than 400 Watt output. I performed a good job but I regretted for failing to connect North America. In effect i never heard them on the band.
I used the contest logger QARTest of my friend Paolo/ik3qar that released me the contest summary and statistics that follows.
This year i performed the CQWW CW 2022 on the 15 metres band only. The ionospheric propagation promises good, as a matter in just 13 hours of operations i got 500 QSOs with all continents. I participated in the Single Operator Single Band Assisted category.
I used my analogic station with Kenwood TS850S, the Heatkit SB220 PA with maximun output 500W and the antenna two elements cubical quad for 20/15/10 metres bands 15 metres high. The Reverse Beacon connection got me both Cluster and Skimmer spots. and the CAT system enabled me to tune on the interesing spots frequency.
The contest log QARTest by Paolo ik3qar get me a quite and effortlessly job. At the end these are the results and statistics by the contest logger.
DARC Contest Hub – Referat Conteste issued the WAEDC CW 2022 final scores on its web site. I found my call sign on the seventh place, I lost two places from the declares score. I have been overtaken by DL6RAI and SP2R respect the declared scores.
La mia attività di Radioamatore consiste nella caccia al dx, partecipazione a Contest nazionali e internazionali in HF, ricerca e restauro di apparati storici Vintage.