Shortwave Listening in the Western United States SIERA technical - - PowerPoint PPT Presentation

SIERA technical talk May 4, 2013 Jeff Cauhape K7BCV

Shortwave Listening in the Western United States

Understanding the SW Bands – Pt 1

Band Name Frequencies Daytime Nighttime Notes 2 Mhz (120 m) 2300-2495 kHz Local only Rare Used by very few domestic stations 3 MHz (90 m) 3200-3400 kHz Local only Limited Mostly domestic audience 4 MHz (75 m) 3900-4050 kHz Good to fair Good to fair Both domestic and international, but not beamed to Americas 5 MHz (60 m) 4750-4995 kHz Regional Fair Mostly domestic 6 MHz (49 m) 5730-6300 kHz Regional Excellent 7 MHz (41 m) 6890-7600 kHz Regional Good Few target the US 9 MHz (31 m) 9250-9995 kHz Fair Good Daytime is fair in Winter, only fair in

• summer. Night good in

summer.

Understanding the SW Bands – Pt 2

Band Name Frequencies Daytime Nighttime Note 11 MHz (25 m) 11500-12200 kHz Good Variable 13 MHz (22 m) 13570-13870 kHz Good Variable 15 MHz (19 m) 15005-15825 kHz Good Variable 17 MHz (16 m) 17480-17900 kHz Good Limited in Summer 19 MHz (15 m) 18900-19020 kHz Good Limited in Summer 21 MHz (13 m) 21450-21850 kHz Limited Rare 25 MHz (11 m) 25670-26100 kHz Rare None

Optimal SW Band (MHz) for Listening in the Western US

January, February and November, December local UTC

Eur E NA W NA C/S Am C/S Af ME/S. As

• E. Asia

Aus / NZ

00:00 – 04:00 08:00 – 12:00 9

7 7 9 n/a 15 9 11

04:00 – 08:00 12:00 – 16:00 13

11 7 21 n/a 11 9 9

08:00 – 12:00 16:00 – 20:00 15

17 13 21 25 13 9 15

12:00 – 16:00 20:00 – 00:00 9

15 13 17 21 13 13 17

16:00 – 20:00 00:00 – 04:00 9

9 9 9 13 17 17 21

20:00 – 00:00 04:00 – 08:00 6

7 7 7 9 17 11 15

Optimal SW Band (MHz) for Listening in the Western US

March, April and September, October local UTC

Eur E NA W NA C/S Am C/S Af ME/S. As

• E. Asia

Aus / NZ

00:00 – 04:00 08:00 – 12:00 9

7 7 11 n/a 17 9 11

04:00 – 08:00 12:00 – 16:00 17

15 7 21 21 13 11 13

08:00 – 12:00 16:00 – 20:00 17

17 15 25 21 17 13 17

12:00 – 16:00 20:00 – 00:00 15

15 13 21 21 15 17 25

16:00 – 20:00 00:00 – 04:00 11

11 9 11 15 17 17 25

20:00 – 00:00 04:00 – 08:00 9

9 7 13 11 n/a 13 15

Optimal SW Band (MHz) for Listening in the Western US

May through August local UTC

Eur E NA W NA C/S Am C/S Af ME/S. As

• E. Asia

Aus / NZ

00:00 – 04:00 08:00 – 12:00 11

7 7 13 n/a 17 13 11

04:00 – 08:00 12:00 – 16:00 15

15 11 17 21 15 15 13

08:00 – 12:00 16:00 – 20:00 17

13 13 21 21 21 15 n/a

12:00 – 16:00 20:00 – 00:00 17

15 13 21 17 17 17 25

16:00 – 20:00 00:00 – 04:00 13

13 11 17 15 17 17 25

20:00 – 00:00 04:00 – 08:00 11

9 9 13 13 n/a 17 15

Recent English Broadcasts

 China Radio International www.cri.cn

 Transmit from La Habana (Cuba), 300 kW  03:00-04:00 UTC 9790 KHz

 Radio Australia www.radioaustralia.net.au

 Transmit from Shepperton (Aus), 700 kW  03:00-07:00 UTC 21725 kHz and  03:30-06:00 UTC 15515 kHz

 Radio New Zealand, www.rnzi.com

 Transmit from Rangitaiki (NZL), 200 kW  05:00-08:00 UTC 11725 kHz

 Radio Habana Cuba, www.radiohc.cu

 See CRI above.

China Radio Int’l Home Page

China Radio Int’l English Page

Key to MUF/LUF Values

MUF/LUF La Habana to Carson Valley

Radio Australia Home Page

MUF/LUF Key

MUF/LUF Shepperton to Carson Valley

Radio New Zealand Home Page

MUF/LUF Key

MUF/LUF Rangitaiki to Carson Valley

Radio Habana Home Page

MUF/LUF La Habana to Carson Valley

Tools to use

 SWBC Sked (iPad app)  DXToolBox (iPad app)  World Radio TV Handbook, 2013  Passport to World Band Radio

Questions?