|[AMRadio] MF-LF propogation|
Holmes.Nigel at abc.net.au
Wed Jan 20 04:29:28 EST 2010
If you want to see what's offering in VK lf (maybe that should be VH) try this search engine in the ACMA Licence database:
Plug in upper & lower values, set the frequency suffix (e.g. kHz) and look for possibilities in the Australian NDB arena.
Keep the search range small say 200-250, 250-300 kHz otherwise you'll get too many returns and the engine will sulk.
This covers all Australian frequency registrations including mf broadcast, hf on to infra-red (nearly).
Look at the "Assignment ID" to find freq, power & location info.
The usual VH NDB aerial is a "T" with 70' vertical loaded by a 200' flat-top. Powers range from 10 watts to several kW. Most will be phased out over the next 5 years.
73 Nigel VK3DZ
From: amradio-bounces at mailman.qth.net [mailto:amradio-bounces at mailman.qth.net] On Behalf Of Jim Wilhite
Sent: Tuesday, 19 January 2010 2:19 PM
To: AM Radio Discussion List
Subject: [AMRadio] MF-LF propogation
In past postings Don/K4KYV mentioned AM broadcast stations that are located in the near East or Africa down there so I wanted to see if I could hear anything from them. Last year I could only hear their carrier when I turned the BFO on and tuned around from ~160 to 200 Kc.
Tonight was a surprise as I could hear 3 stations very clearly here in the mid-continent area of the US.
Don mentioned hearing them clearly in KY last year, but I never could recover audio from them. Tonight was different as their signals were strong and not fading in the short term. So I though I would tune the Aircraft NDB band just to see what I could hear. The heterodynes were so strong on most of the frequencies that I could not identify any of the CW IDs. On a few of the frequencies I could hear individual stations, but not many.
Please consider the environment before printing this e-mail.
The information contained in this email and any attachment is confidential and
may contain legally privileged or copyright material. It is intended only for
the use of the addressee(s). If you are not the intended recipient of this
email, you are not permitted to disseminate, distribute or copy this email or
any attachments. If you have received this message in error, please notify the
sender immediately and delete this email from your system. The ABC does not
represent or warrant that this transmission is secure or virus free. Before
opening any attachment you should check for viruses. The ABC's liability is
limited to resupplying any email and attachments.
More information about the AMRadio mailing list
This page last updated 14 Dec 2017.