1. QRP Contest Calendar (квітень) - https://www.contestcalendar.com/contestcal_qrp.html
** CWops Mini-CWT Test (0300Z-0400Z, Apr 1; 1300Z-1400Z, Apr 7; 1900Z-2000Z, Apr 7; 0300Z-0400Z, Apr 8; 1300Z-1400Z, Apr 14; 1900Z-2000Z, Apr 14; 0300Z-0400Z, Apr 15; 1300Z-1400Z, Apr 21; 1900Z-2000Z, Apr 21; 0300Z-0400Z, Apr 22; 1300Z-1400Z, Apr 28; 1900Z-2000Z, Apr 28; 0300Z-0400Z, Apr 29) - https://cwops.org/cwops-tests/
** PODXS 070 Club PSK 31 Flavors Contest (1000Z, Apr 3 to 0400Z, Apr 4) - http://www.podxs070.com/o7o-club-sponsored-contests/31-flavors
** SP DX Contest (1500Z, Apr 3 to 1500Z, Apr 4) - https://spdxcontest.pzk.org.pl/2021/rules.php
** North American SSB Sprint Contest (0000Z-0400Z, Apr 4) - http://ssbsprint.com/rules/
** ARS Spartan Sprint (0100Z-0300Z, Apr 6) - http://arsqrp.blogspot.com/2009/02/so-whats-spartan-sprint-and-how-do-i.html
** QRP ARCI Spring QSO Party (0000Z-0600Z, Apr 10) - http://qrparci.org/contest/spring-qso-party
** North Dakota QSO Party (1800Z, Apr 10 to 1800Z, Apr 11) - http://ndarrlsec.com/
** Georgia QSO Party (1800Z, Apr 10 to 0359Z, Apr 11 and 1400Z-2359Z, Apr 11) - https://gaqsoparty.com/
** Hungarian Straight Key Contest (1500Z-1600Z, Apr 11) - http://hskc.ha8kux.com/
** NAQCC CW Sprint (0030Z-0230Z, Apr 14) - http://naqcc.info/sprint/sprint202106mw.html
** Holyland DX Contest (2100Z, Apr 16 to 2100Z, Apr 17) - http://www.iarc.org/iarc/#HolylandContest
** YU DX Contest (0700Z, Apr 17 to 0659Z, Apr 18) - http://www.yudx.yu1srs.org.rs/
** CQMM DX Contest (0900Z, Apr 17 to 2359Z, Apr 18) - http://www.cqmmdx.com/rules/
** Michigan QSO Party (1600Z, Apr 17 to 0400Z, Apr 18) - http://www.miqp.org/Rules.htm
** EA-QRP CW Contest (1700Z-1800Z, Apr 17 (10m) and 1800Z-1900Z, Apr 17 (15m) and 1900Z-2000Z, Apr 17 (20m) and 2000Z-2100Z, Apr 17 (40m) and 2100Z-2300Z, Apr 17 (80m) and 0700Z-0900Z, Apr 18 (40m) and 0900Z-1000Z, Apr 18 (20m) and 1000Z-1100Z, Apr 18 (15m) and 1100Z-1200Z, Apr 18 (10m)) - http://www.eaqrp.com/index.php/actividades/concurso?id=237
** Ontario QSO Party (1800Z, Apr 17 to 0500Z, Apr 18 and 1200Z-1800Z, Apr 18) - http://www.va3cco.com/oqp/rules.htm
** Run for the Bacon QRP Contest (2300Z, Apr 18 to 0100Z, Apr 19) - http://qrpcontest.com/pigrun/
** 10-10 Int. Spring Contest, Digital (0001Z, Apr 24 to 2359Z, Apr 25) - http://www.ten-ten.org/index.php/activity/2013-07-22-20-26-48/qso-party-rules
** QRP to the Field (0800-1800 local, Apr 24) - http://www.zianet.com/qrp/qrpttf/pg.html
** Helvetia Contest (1300Z, Apr 24 to 1259Z, Apr 25) - https://www.uska.ch/contest/schweizer-contest-kw/#
** Florida QSO Party (1600Z, Apr 24 to 0159Z, Apr 25 and 1200Z-2159Z, Apr 25) - http://floridaqsoparty.org/rules/
2. Портативное зарядное устройство 5x18650, чехол на солнечной батарее 18650, 2xUSB - https://aliexpress.ru/item/32989380091.html
3. Мелодия загрузки для Baofeng DM-1801 + куча готовых мелодий - https://qsy.by/melodiya-zagruzki-dlya-baofeng-dm-1801-kucha-gotovyx-melodij/
4. Android-додатки: Ham Radio Voice Keyer - https://play.google.com/store/apps/details?id=com.wolphi.voice
** Монитор WSJT-X (WSJT-X Monitor) - https://play.google.com/store/apps/details?id=com.feotec.wsjt_xmonitor.ads
5. LaboratoryW: Почему на полевых днях на УКВ чаще используется горизонтальная поляризация? - https://raxp2.blogspot.com/2019/08/blog-post.html
** Почему следует с опаской и пониманием использовать импортные радиокомпоненты с золочением? - https://raxp2.blogspot.com/2020/02/blog-post.html
