Welcome to new 160m band blog

This blog is the replacement of the my preview Topband blog here http://topband.blog.cz/ because of an agressive advertising and flash banners inserted by the blog provider. For older posts access You can visit the old blog link which will exist still... but it will not be updated anymore.

Effective from 1st Jan 2017 please paper QSL via OM-bureau only.

Thursday, February 22, 2018

The "Unfavorable DX frequencies" table on 160m - (update 22Feb2018)

Hi all,

maybe you remember that long time ago I tried to create and keep updated the list with "unfavorable frequencies > the frequencies which are QRMed in some locations or somehow horrible to use...

Unfortunately this small idea unacknowledged by time...

So now I am coming back with that idea and I will try to keep it up!

The "Unfavorable DX frequencies" table on 160m (original article 4Mar2007)   

Hi all,

from my experiences with DXing on Topband I found that there are some frequencies which are not usable in some DX locations cause of local heavy QRM over there or permanent local BC interfered signals or other problems.

These frequencies are permanently unusable or even unfavorable for DXing in that DX location and its not efficient to calling CQ or looking for DX from that location overe there...

In my oppinion it will be very usefull for all Topband enthusiasts to have the table of that "unfavorable QRGs" available for quick check if needed. This table will be updated as many time as possible.

QRG (kHz)Unfavorable range (kHz)DX-locationComments
18201819 - 1823JApermanent BC QRM in JA around 1820
18181815 - 1821ZLstrong QRM from local GPS correction on 1818
Informations about another "unfavorable QRGs" in Your locations are welcommed for sure! Please let me know by email or in comments bellow...

73, Petr OK1RP

Friday, February 16, 2018

Texas company plans 160m band Wireless Power Transfer ?!

Hi all,

Texas company plans 160m band Wireless Power Transfer

SWLing Post reports Texzon Technologies has been granted an FCC experimental license, callsign WJ2XGB, to test Wireless Power Transfer (WPT) from 1710 kHz to 1900 kHz in the 160 meter band

Texzon Technologies apparently aim to conduct testing in the spectrum range from 1710 kHz to 1900 kHz with an input power of less than 5 kW and EIRP limited to 100 watts or less. The FCC license permits an ERP of 1000 watts.

The submission to the FCC listed Michael Taylor KG5IUC as being involved in the project

FCC database https://apps.fcc.gov/oetcf/els/reports/GetApplicationInfo.cfm?id_file_num=0924-EX-CN-2017

Texzon Technologies, LLC http://www.texzontechnologies.com/

The SWLing Post https://swling.com/

New Experimental Radio licenses  https://twitter.com/experimradio

(Thanks to www.southgatearc.org)

...any comments please?

73 - Petr, OK1RP

Tuesday, January 30, 2018

3Y0Z - Bouvet Isl. on Topband

Hi all,

An international team will be active from Bouvet Island, IOTA AN - 002, in 2018 as 3Y0Z.

Planned dates 20 January - 28 February 2018 (will be determined by vessel schedule).

They will operate on 160 - 10m and also 6 and 2m EME.

QSL manager for 3Y0Z DX Pedition N2OO.

Off Island Team:
Propagation - Stu K6TU.
Logos and Graphics - Dani YB2TJV.
Server-Logging Software - Dean N7XG.
EME Pilot - Chris, PA2CHR.
On the way to Bouvet Island team will be active as 3G9A/MM.

3Y0Z DX Pedition News 3Y0Z 160m

3Y0Z - Bouvet Island - 160m        
CW: 1826.5kHz

73 - Petr, OK1RP

Tuesday, January 23, 2018

CQ160 CW 2018 - Single Op Low Power Europe plaque

Hi all,

With the 2018 CQ160M CW weekend coming up this week so it is time to renew my plaque sponsorship.

As always You can try to grab the plaque sponsored by me in Single Operator - Low Power, EUROPE category in the CQ160M, CW contest this year... In Memoriam to Jo, DL1RK - one of the most biggest Topband enthusiasts, excellent CW operator and mainly one of the best friend!

The current list of plaques and the sponsors appears at:


I wish to all of you good luck and CU in the contest (me as OK5T contest team operator.

73 - Petr, OK1RP

Sunday, January 21, 2018

V5 - Namibia on 160m band by Rudi, DK7PE

Hi all,

Rudi, DK7PE will be operating out of Omarura/Namibia trying the low bands with a focus on 160 and 60m as V5/DK7PE in between 24Jan - 30st Jan 2018.

Rudi will be using his old Icom IC-735 which was opened for 60m band operation too.

During CQWW160CW Rudi will be on the Topband...

You may QSL direct, but please don't send any IRCs for return postage. Rudi don't need a QSL, so you can use PayPal and send him the contact details. If the QSO is OK in the log, He'll send you the confirmation.

Please use:

73 - Petr, OK1RP

Thursday, January 18, 2018

Low-Bands WSPR Propagation During the 2017 Solar Eclipse

Hi all,

"Low-Bands WSPR Propagation During the 2017 Solar Eclipse" - an interesting article can be found on page 10 of the on-line CQ Magazine from Dec 2017 for free here:


The propagation enhancement on TB was observed depends to location and used antennas. The SNR feasibility study is interesting thru the low-bands...

73 - Petr, OK1RP

Sunday, December 3, 2017

9A - Croatia has now access to whole 160m band


On the Friday, 24 th November 2017 the Croatian Regulatory Authority for Network Industries (HAKOM) published  in a Official gazette (Narodne Novine) No 116/2017  changes to the rules on amateur radio communications in the Republic of Croatia.

According to this changes  Croatian radio amateurs now have access to the 160 meter band from 1.810 – 2.000 kHz for now.

According to the Official gazette notice, these changes come into force 8 days following its publication, so we should expect more Croatian stations after 02.12.2017.

The changes in the rules for amateur radio in the Republic of Croatia can be found on the following web address:

(Many thanks to Zeljko, 9A2EY for info!)

73 - Petr, OK1RP