[IRCA] TAs and TPs
For those of you doing TAs and TPs with the better equipment I'm wondering if anyone can try for The Big L on 1395 in Holland.They were fired up again on 11-01 -09 and I think the hardware puts out 100Kw.I don't have the means to pull in TAs with the barefoot receivers from my west coast location.There's a prize for the first person to snag that one.(just kidding)Thanks.Bill in Vic ;BC __ Looking for the perfect gift? Give the gift of Flickr! http://www.flickr.com/gift/ ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
[IRCA] TAs and TPs in middle NA.
Location is about 50 miles dues east of Winnipeg so still pretty much in the middle of NA. We weren't expecting a lot because the area had been struck by high winds a couple of times in the summer and we hadn't been able to do any antenna repairs before yesterday and there is only so much you can do in one afternoon. However... Weak hets showed up by 00:30 UT (over an hour before local sunset) on 189, 162, 153. 198 and 1134. Audio on 153, 162 (French) and 189 by 00:40. From then until about 03:30 there were hets on almost every European frequency and many with some audio. 1215 Virgin Radio was the best with understandable IDs but there was also English on 1089, German (I think) on 1017 and French on 1377 and 1557 later on. The longwaves were best as usual on the longest antenna (about 1500 ft) which is aimed at the maritime provinces and on to central Africa. European medium waves were best on a shorter antenna (about 800 ft if there aren't any breaks we didn't get to) that is aimed at aimed at the UK. Iceland on 189 was still there in the morning and was joined by Russian on 180 and Japanese on 774 (both on an antenna aimed at Mongolia). The Japanese was the best ever. There was also briefly at least music on 702 and a dozen or so other hets. Receivers included an HF-1000, an NRD-535 and an NRD-545. George McLachlan . -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.487 / Virus Database: 269.13.22/1013 - Release Date: 2007-09-17 13:29 ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] TAs and TPs--Carrier without audio
That is why European stations sound so much better if you can get them in clearly enough to hear them. American stations are compressed all to hell, they figure the louder the station the more likely you are to keep tuned to it while you are tuning around the band. Bob Young Millbury, Ma >From: Charles A Taylor <[EMAIL PROTECTED]> >Reply-To: Mailing list for the International Radio Club of >America >To: Mailing list for the International Radio Club of >America >Subject: Re: [IRCA] TAs and TPs--Carrier without audio >Date: Wed, 14 Mar 2007 20:48:34 -0400 > >At 02:59 AM 3/13/2007 -0400, you wrote: > >Carriers without audio on TAs and TPs is a result of > >under modulation of the audio part of the signal,yes > >or no? > >Bill, > >I was told some twenty years ago that European broadcasters >hold their modulation to about 80% peaks, and don't use the >"supermodulation" techniques used here in NA. > >Consequently, their modulation density is much lower than >for Region II stations. > >I observed that the Asians generally modulate to 100%, but >I don't think they "supermodulate" (peaks to 125% of carrier) >as Region II stations do. > >If Saudi Arabia used supermodulation techniques on their >2-megawatt 1521-kHz rig, we'd sure know it quick. They >must hold their peaks down to 75% or so. > > >73, > >Charles > > > > - >Charles A Taylor, WD4INP >Greenville, North Carolina > > >___ >IRCA mailing list >IRCA@hard-core-dx.com >http://montreal.kotalampi.com/mailman/listinfo/irca > >Opinions expressed in messages on this mailing list are those of the >original contributors and do not necessarily reflect the opinion of the >IRCA, its editors, publishing staff, or officers > >For more information: http://www.ircaonline.org > >To Post a message: irca@hard-core-dx.com > ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] TAs and TPs--Carrier without audio
At 02:59 AM 3/13/2007 -0400, you wrote: >Carriers without audio on TAs and TPs is a result of >under modulation of the audio part of the signal,yes >or no? Bill, I was told some twenty years ago that European broadcasters hold their modulation to about 80% peaks, and don't use the "supermodulation" techniques used here in NA. Consequently, their modulation density is much lower than for Region II stations. I observed that the Asians generally modulate to 100%, but I don't think they "supermodulate" (peaks to 125% of carrier) as Region II stations do. If Saudi Arabia used supermodulation techniques on their 2-megawatt 1521-kHz rig, we'd sure know it quick. They must hold their peaks down to 75% or so. >73, Charles - Charles A Taylor, WD4INP Greenville, North Carolina ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] TAs and TPs--Carrier without audio
At 06:59 13/03/2007, you wrote: >Carriers without audio on TAs and TPs is a result of >under modulation of the audio part of the signal,yes >or no? I guess I'd qualify that with "strong carriers without audio", Bill, as we often hear weaker carriers without audio. Here, 972 from South Korea seems difficult to hear audio from, even though the carrier is often strong. Have to assume low modulation, as the Chinese on 963 can deliver better audio with a lower carrier level. Another example is 1566, also South Korea, which can produce a stronger carrier than VoA-1575 from Thailand, yet Thailand might produce audio first. Again, the assumption is that 1566 is relatively undermodulated. But, splatter can conceal audio too. 1134 has often had a good strength carrier here, but audio is only heard well if CKWX takes a break. Nick Nick Hall-Patch Victoria, B.C. Canada ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
[IRCA] TAs and TPs--Carrier without audio
Carriers without audio on TAs and TPs is a result of under modulation of the audio part of the signal,yes or no? On my last trip to western Europe,specifically Holland I noticed that most stations running with power levels many times higher than the NA max do not overload receivers ( even small pocket radios) close to a TX site but can still be picked up hundreds of miles away.An example of this are stations in Holland on 747 and 1008 (400KW) and in Belgium on 540 and 621 with 150 KW,covering both countries top to bottom and crossing borders into France and Germany,Daytime.Bill in BC __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
