KTWR Special DRM Broadcast week September 6-11 for Indian listeners

Listen to DRM tests everyday this week !

This is your chance to try out your DRM reception capabilities.

KTWR will be conducting daily test DRM broadcasts and each day we will be testing different DRM modes of transmission.

This broadcast will be on 15200 kHz in the 19 meter band directed toward listeners in India.

KTWR looks forward to receiving your feedback and hope that you enjoy these programs.

Please contact with your location and SNR and reception details by emailing ktwrdrm@twr.org

KTWR DRM Receiver Test Broadcast Schedule September 6 - 11, 2020

TIME UTC    Sept 6   16 QAM SBR Change  - Data service: Mot web

1027-1041       S1 English TX7 AAC B/16QAM No SBR Mono PL0, - English Metadata S2 MOTweb

1041-1057       S1 English TX7 AAC B/16QAM SBR Mono PL1, - English Metadata S2 MOTweb

TIME UTC    Sept 7   64QAM/ SBR Change,  No SBR PL1 to SBR PL2 - Data service:  Slides

1027-1041       S1 English TX7 AAC B/64QAM No SBR Mono PL1, - English Metadata S2 Slides

1041-1057       S1 English TX7 AAC B/64QAM SBR Mono PL2, - English Metadata S2 Slides

TIME UTC    Sept 8    Param Stereo PL0 – low bit rate, high protection - No Data Service

1027-1057       S1 English TX7 AAC B/64QAM Param Stereo PL0 – English Metadata

TIME UTC    Sept 9   Dual Language & UTF-8 Text, protection High/Low - No Data Service

1027-1057        S1 Tamil TX7 AAC B/64QAM No SBR Mono PL0 - Tamil Metadata

                         S2 English TX7 AAC B/64QAM No SBR Mono PL0 - English Metadata

1041-1057        S1 Tamil TX7 AAC B/64QAM No SBR Mono PL1 - Tamil Metadata

                         S2 English TX7 AAC B/64QAM No SBR Mono PL1 - English Metadata

                      

TIME UTC    Sept 10   QAM change 16 to 64 - Data service: Journaline

1027-1041    S1 English TX7 AAC B/16QAM No SBR Mono PL0, - English Metadata S2 Journaline

1041-1057    S1 English TX7 AAC B/64QAM SBR Mono PL2, - English Metadata S2 Journaline

TIME UTC    Sept 11  Param Stereo PL1 – high bit rate, low protection - No Data Service

1027-1057       S1 English TX7 AAC B/64QAM Param Stereo PL1 – English Metadata

(Source : http://ktwrdrm.blogspot.com/)

KTWR Special Christmas Broadcasts in DRM mode

KTWR will broadcast special Christmas broadcasts in DRM mode starting 14th Dec, 2019 :

day        date time (UTC) freq  beam language program
------------------------------------------------------
Saturday  14 Dec 1100–1200 9910  305 Mandarin Jesus Film
Sunday    15 Dec 1030–1100 13800 285 English  2018 Christmas Special **
Monday    23 Dec 1024-1055 13800 285 English  2019 Christmas Special
Monday    23 Dec 1228-1243 7500  320 English  2019 Christmas Special
Tuesday   24 Dec 1024-1055 13800 285 English  2019 Christmas Special
Tuesday   24 Dec 1228-1243 7500  320 English  2019 Christmas Special
Wednesday 25 Dec 1024-1055 13800 285 English  2019 Christmas Special
Wednesday 25 Dec 1228-1243 7500  320 English  2019 Christmas Special

** your feedback on this one needed!  Since it has significant music we're using SBR.  

To get the data rate for SBR we're reducing FEC to PL=1. Too many dropouts???) 

(Steve Brunson,KTWR Chief Engineer,Agana,Guam)

KTWR DRM UPDATE

On August 5th, 2019 KTWR began transmitting high-powered DRM broadcast to India, China and Japan / Korea, each country on a different day of the week:  

Wednesday 11995 kHz 1026-1056 UTC ANT2A-315 50kW English  (China)   unchanged

Thursday 7500 kHz 1230-1245 UTC ANT2A-345 50kW English (Japan/Korea) 31-Oct-19

Sunday 13800 kHz 1026-1056 UTC ANT3-285 90kW English (South Asia) November

This is a test broadcast and we are asking listeners to send back SNR and other data to us so we can learn how each mode behaves to real targets.

For the latest updates to the KTWR DRM broadcast go to http://ktwrdrm.blogspot.com/

For more information about DRM go to https://www.drm.org/

(Updated on 22-Oct-19)

 

KTWR Guam to start regular DRM transmissions

KTWR is about to start regular DRM broadcasts to four different areas. There will be broadcasts one day per week to each of four areas starting 5 August 2019. They will be working with the content server parameters to come up with the best compromise settings for each area. Each week will have different settings. KTWR will  really appreciate your feedback for as many weeks as possible. Your assistance will ultimately help give your fellow listeners the best possible reception in the long run. For now, all programs will be in English.

The schedule will be as follows, starting the week of 5 August through the end of the A19 broadcast season:

Day                 Freq                Time                  Region                   Power

Monday         11580kHz   1215-1245 UTC   South Asia               90kW

Tuesday         11995kHz   1026-1056 UTC   ANZ/South Pacific  50kW

Wednesday    11995kHz   1026-1056 UTC   China                       50kW

Thursday       11995kHz   1026-1056 UTC   Japan/Korea             50kW

DRM Test by Trans World Radio, 17-19 Jan, 2018

DRM Test by KTWR, Guam

Date :    17-19 January, 2018

Freq :     17530 kHz

Time :     0815 - 0845 UTC

Power :  90 kW

Target :  India

Audio :   Mono

Lang :     English

Data :     None, other than ID and contact info

KTWR Guam's DRM test broadcast towards South Asia

DRM test broadcast from KTWR Guam towards South Asia :

Date :     9 – 13 January 2017
Time :    1445 – 1515 UTC
Freq :     9910 kHz
Power :  90 kW
Mode :   B 64 QAM
Azimuth : 290 deg
Target : South Asia (Ciraf 41)

Reception reports to : KTWRDRM@twr.org

KTWR DRM TEST ON 9975 kHz

KTWR DRM Test on 9975 kHz till end of Nov'15

 

1215-1245 UTC

 

MON,FRI,SAT - ENGLISH - DRM NEW

SUN - Japanese (Analog)

TUES, WED, THURS - Chinese (Analog)

 

Reception reports to : ktwrfreq@guam.twr.org
OR, submit online at : http://www.twr.asia/online-qsl-form

 

 

 

KTWR Guam DRM Test - New

Date : 17th & 18th Aug 2015 (Monday and Tuesday)

Time : 1445 -1515 UTC (8.15 - 8.45 pm IST)

Power : 90 kW

Language : English

Frequency : 12120 kHz

Azi : 285 Deg (towards North India)

Reception reports to info@twr.asia or submit online at http://www.twr.asia/online-qsl-form

(Alokesh Gupta)

KTWR Guam DRM Test

Date : 13th and 14th Aug 2015 (Thursday and Friday)

Time : 1445 -1515 UTC (8.15 - 8.45 pm IST)

Power : 90 kW

Language : English

Frequency : 15450 kHz

Azi : 285 Deg (towards North India)

Reception reports appreciated.

KTWR Guam DRM Test

KTWR Guam DRM Tests

Date : 8th & 9th April 2015 (Wed and Thurs)

1000 -1030 UTC (3.30 - 4 pm IST)

Frequency : 15300 kHz (Two channels with different content)

Azi : 255 Deg (so may be heard in southern part of India if at all)