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.

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

Wednesday, November 29, 2017

An interesting discussion about VDSL Emission Investigation...

Hi all,

an interesting discussion about the VDSL Emission Investigation thru the bands is continuing over here:


An initial letter from Robin, G3JWI (Nov 2014) as follows...

"The EMC Committee is carrying out an investigation of the significance of interference to amateur radio from leakage from VDSL systems. The emissions from VDSL are continuous and indistinguishable from white noise and may go unnoticed.

VDSL2 covers frequencies up 17.66MHz. The downstream and upstream bands alternate and the easiest way to detect VDSL is to look for the change in noise level at the band transitions. These are nominally 0.138MHz, 3.75MHz, 5.2 MHz, 8.5 MHz, 12MHz, and 17.66MHz. The band that predominates depends on distance of the house from the street cabinet. Most problems are seen when the connection to houses in the area is by overhead cables.

The effect will be that received signals seem weak and the background S meter reading higher than expected. To check for VDSL emissions tune about 75kHz either side of the nominal transition frequencies. Ignore off air signals and local incidental noise. Tuning around these frequencies and listening while watching the S meter will show a noise step if there is VDSL interference. If an SDR is available the step will be clearly seen and the 4.3125kHz patterning of the VDSL signal may be visible on a waterfall display, but careful adjustment of the contrast may be required for this.

If you want to see some examples look at the 2014 RSGB Convention paper

There is also an item on VDSL emissions in in EMC Matters in RadCom December 2013.

The key facts we would like you to report are the frequencies and size of the steps. If you have an SDR, spectral and waterfall plots would be very useful. If you are not QTHR please give some indication of your location.

Please reply via this forum, to
emc.chairman@rsgb.org.uk or to myself directly.
Thanks and 73
Robin G3JWI
Acting Secretary EMCC