Hello Topbanders, has somebody any useful, real life experience with the PA0SIM's noise canceller (phaser)? http://www.pa0sim.nl/Phaser%2080%20-%2010%20meters.htm I would be interested especially on
CRC (OK) should be OL7HQ this year. 73, Martin, OK1RR Dne 8.6.2017 v 20:59 OZ0J Joe napsal(a): Dear all The IARU HF Championship Contest 2017 will take place in the weekend 8 and 9 July 2016. Togethe
Let me hope that this is an exception and NOT a rule! CW is the DXer's primary mode! 73, Martin, OK1RR Dne 31.3.2018 v 18:46 wb6rse1@mac.com napsal(a): 7Q7EI - no CW on 160 - only FT8 Info here: http
Disagreed! A mode is matter of person, not software. 73, Martin, OK1RR Dne 2.4.2018 v 01:42 Joe Subich, W4TV napsal(a): Every mode other than FT-8 requires a person to tune in a station and to take p
The 2N3553 is a brutal 7 watt device in a TO-39 metal package. Chris Trask, N7ZMY mentioned some unparalleled IM characterics '... The BFQ19 (made by NXP née Philips) and the NE46134 (made by NEC) ar
Lee, very interesting. Many thanks for that valuable info! BTW is there any easy, cheap and quick method to test the J310, possibly without need of dedicated complex 'test jig'? 73, Martin, OK1RR Dne
WooW, very impressive! Thanks for sharing! 73, Martin, OK1RR Dne 01. 12. 18 v 17:09 Hank Garretson napsal(a): I encourage you all to read W7LR QRZ page. Top Band Exuberantly, Hank, W6SX On Sat, Dec 1
Did he same. Since this change no problem anymore. Confirming what Greg says and can only recommend - throw away all PLs and go to N! 73, Martin, OK1RR Dne 06. 12. 18 v 5:00 Greg-zl3ix napsal(a): I c
Some experience here: http://www.bavarian-contest-club.de/projects/misc_projects/hfrelais.txt 73, Martin, OK1RR Dne 06. 12. 18 v 17:40 Sam Josuweit napsal(a): Can anyone recommend a good general use
Harris uses BNCs at this power level (3CX-1500A7) in RF-353 (AM-7224) amplifier. They were used under harsh conditions for decades. 73, Martin, OK1RR Dne 08. 12. 18 v 3:07 Tim Duffy napsal(a): When y
Please vote in this new poll. http://www.strawpoll.me/17426016 Many thanks! 73, Martin, OK1RR _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Me too, regardless of the band. Anytime I tried to reach them they were on FT8, not on CW... 73, Martin, OK1RR Dne 15. 04. 19 v 5:09 FZ Bruce napsal(a): Sorry to hear you missed them. I also missed t
That statement doesn't agree with my quick modeling just read a few articles about DHDL antennas. One article states, the cut off frequency where the antenna becomes useless is when the overall lengt
oops, the images didn't come thru. See here: http://www.ok1rr.com/public/DHDL_OPT.NEC http://www.ok1rr.com/public/antview.png http://www.ok1rr.com/public/dhdl_opt-ver.png http://www.ok1rr.com/public/
Gentlemen, stop this annoying practice, please! Not all are ARRL members! Thanks for understanding, 73 Martin, OK1RR Dne 03. 08. 19 v 20:20 donovanf@starpower.net napsal(a): Hi Bob The "how to" artic
What QST? Would be a copy available? 73, Martin, OK1RR Dne 21. 08. 19 v 18:24 K9FD napsal(a): An excellent article is in an old QST called "station design for DX" It mentions that 1 DB improvement in
I did quite lot of research about protective limiters. The best solution found is to use the special TVS diodes RClamp2502L by Semtech which incorporate surge rated, low capacitance steering diodes a
datasheet here http://www.ok1rr.com/files/rclamp2502l.pdf 73, Martin, OK1RR Dne 11. 10. 19 v 15:17 Martin Kratoska napsal(a): I did quite lot of research about protective limiters. The best solution
I applaud, Dave! 73, Martin, OK1RR Dne 11. 01. 20 v 6:02 Dave AA6YQ napsal(a): + AA6YQ comments below It would seem that the new digital modes have re-invigorated ham radio, at least activity wise. B