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OK1RP - Ham radio in Renaissance...: August 2016

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OK1RP - Ham radio in Renaissance. VHF / UHF Field Day 2016. We participated in the VHF / UHF Filed Day 2016 again with our OK5T team together with son Jakub (OK1-36357). It looked like nice contesting weekend at the beginning but finally it went south because of several storms and heavy rainning. The standard 14-el. Yagi has been used for 70cm band. Nothing special but it is allowing us to make few QSOs on this band. He speaked well mainly about the low noise antenna performance. We used again only 100W ...

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OK1RP - Ham radio in Renaissance...: December 2015

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OK1RP - Ham radio in Renaissance. Happy New Year 2016 from OK1RP. I wish you happy, prosperous and healthy New Year 2016. 60 MR100 antenna analyzer - the output frequency quick test. I found on the internet that some of these Chinese analyzers like SARK100/MR100 have a serious problems with their DDS chip. This resulted in an output frequency being 1.5 times lower than what was displayed on the analyzer. To check if this was the problem with my analyzer I did a quick test. 73 - Petr, OK1RP. The SARK100 A...

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OK1RP - Ham radio in Renaissance...: November 2015

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OK1RP - Ham radio in Renaissance. 60 MR100 antenna analyzer toy. Maybe you heard about the simple, cheap antenna analyzers which are available on different e-shops, auctions, shopping galleries etc. already. There is one of them - $60 MR100 antenna analyzer toy - first test. Http:/ youtu.be/82JGs1yC cM. I got it from our local radioclub staff last week for testing. He bought it somewhere on the internet for $60.50 fully assembled and tested. It does not look so bad for these money. Steps 100Hz to 100kHz.

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OK1RP - Ham radio in Renaissance...: Replacing an output amplifier chip in RigExpert AA-200 antenna analyzer

http://ok1rp.blogspot.com/2016/05/replacing-output-amplifier-chip-in.html

OK1RP - Ham radio in Renaissance. Replacing an output amplifier chip in RigExpert AA-200 antenna analyzer. After some unsuccessful trials of repairing the AA-500 antenna analyzer from RigExpert by my good friend he decided to ask me to help him with that job last month. Mode does not show filled bars. If the Sirenza amplifier is damaged then there are no scale deflections on both tests even does not matter if you have the test port loaded or keep it opened. Http:/ www.ebay.com/itm/231949688420? Push the ...

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OK1RP - Ham radio in Renaissance...: March 2015

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OK1RP - Ham radio in Renaissance. Front-end saver for LB antennas. If You are using a separate receive antennas then you need a good protection circuit to eliminate the possibility of blowing out Your receiver's front-end while using these auxiliary receive antennas specialy on low bands. The perfect solution designed years ago Gary, KD9SV and I am using this genuine design in the alu-box for years without any problems. Thanks to Martin's ( OK1RR. After the final assembly I am highly recommending to test...

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OK1RP - Ham radio in Renaissance...: Looking for clean SS HF PA w/QSK - part 3

http://ok1rp.blogspot.com/2016/04/looking-for-clean-ss-hf-pa-wqsk-part-3.html

OK1RP - Ham radio in Renaissance. Looking for clean SS HF PA w/QSK - part 3. There I am sharing the findings and latest informations about this topic done by my friend Rudi, DK5FD. I own for many years an EXPERT 1K-FA PA and I am quite contented with it, up to the QSK operation. Because, the QSK operation is very loud, due to the relais noise; it's a ne. Up to now I have also not found a suitable QSK amplifier. I had written up the following companies:. That are interested in QSK rigs. From the HAM's the...

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OK1RP - Ham radio in Renaissance...: October 2015

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OK1RP - Ham radio in Renaissance. A corrected version of QST's KSYN3A in K3 review. There is the link for corrected version of QST's KSYN3A board review which is replacing the erroneous TX phase noise plot in their last QST article:. Http:/ www.elecraft.com/K3/QST%20KSYN3A%20revised.pdf. There is also explanation of their mistake in LF bands performance (500kHz/137kHz) measurement due to lack of proper modification on tested K3! Thanks to Wayne, N6KR for sharing the link. Hope it helps,. 73 - Petr, OK1RP.

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OK1RP - Ham radio in Renaissance...: April 2015

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OK1RP - Ham radio in Renaissance. RX ANTs switching topology for SO2R or M/2 contesting. As I was asked by several friends how I am handling more receiving antennas for lowbands in my setup I decided to share first version of my solution which I used last year.(now under reworking). The RX antennas switching topology layout ver.1.1. The most famous part of this solution were KD9SV front-end savers which I used in this solution with Martin's, OK1RR modification and worked like champ. 73 - Petr, OK1RP.

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OK1RP - Ham radio in Renaissance...: What's up in space these days

http://ok1rp.blogspot.com/2016/08/whats-up-in-space-these-days.html

OK1RP - Ham radio in Renaissance. What's up in space these days. If you are interesting in the DX conditions or bands propagations seriously then it is really important to know what's up in space in general. For updates and more information. 73 - Petr, OK1RP. Subscribe to: Post Comments (Atom). QSL policy since 2017. Effective from 1st Jan 2017 please paper QSL via OM-bureau only. View my complete profile. 160m band DX Operation. 60m band DX Operation. Mizuho transceivers, Japan. VHF / UHF Field Day 2016.