2018 Super frequency list : broadcast and utility / ed. Klingenfuss Publications
2017/2018 Guide to utility radio stations : professional HF communication today / ed. Klingenfuss Publications
2018 Shortwave frequency guide : worldwide broadcast and utility radio stations / ed. Klingenfuss Publications
2015/2016 Guide to utility radio stations : professional HF communication today / ed. Klingenfuss Publications
2015 Shortwave frequency guide : worldwide broadcast and utility radio stations / ed. Klingenfuss Publications
The 2015 super frequency list : broadcast and utility / ed. Klingenfuss Publications
Radio data code manual : worldwide HF communication today
The 2012 super frequency list : broadcast and utility / ed. Klingenfuss Publications
2012 Shortwave frequency guide : worldwide broadcast and utility radio stations / ed. Klingenfuss Publications
2011/2012 Guide to utility radio stations : worldwide HF communication today / ed. Klingenfuss Publications
2009 Super frequency list : broadcast and utility / ed. Klingenfuss Publications
2009 Shortwave frequency guide : worldwide broadcast and utility radio stations / ed. Klingenfuss Publications