Re: [IRCA] New DU heard in Michigan this morning!

[neilkaz <neilkaz@xxxxxxxxxxxxx>]

Tremendous catch, Tim! I've never had more than an occ. carrier from them and never better than at least several dB below what I'd think is needed for even trace audio. Were there any traces of any X-band Aussie carriers noted?

Re: antennas and direction of reception. You've told me that your D-KAZ is laid out exactly N-S like mine is. Your bearing to Emerald is about 276 deg. Assuming the antenna is aimed exactly at 360 calculations show that the signal picked up at 276 deg would be at least 8 or 9 dB down from what is received from 360. That is a substantial difference and I have to suspect that there may be some path skewing in effect. These high band freqs can act somewhat like SW stns at times. 

I believe your BOGs are laid out aimed NE-ENE from what you've said. Unterminated BOGs are fine antennas off the back end, but as they get longer there's considerably more loss off the back end at the high end when compared to the low end. You may have close to 10 dB F/B loss and that combined with being somewhat off the back end beam peak might be too much for 4QD whereas you have less loss low band (Tahiti etc) and your back end beam direction is good for Tahiti. 

As for the 120m in the Northern Territory, those are more off a higher latitude bearing. Your bearing to Katherine is 299 deg so the N D-KAZ should do OK. However, your bearing to Sydney is 262 deg, and if Radio Symban 2368.5 is better on the N than the S D-KAZ then I really think that there has to be some path skewing at work.

I may have picked the wrong morning to catch up on sleep! I'll try tomorrow morning I hope. My D-KAZ array can put a beam about 70 deg wide at about 285 deg if I reverse the phase between the two antennas. That should be decent if there's any signal making it here from 1548. I can also check 120m. 

Aiming WSW as I usually do when there's lingering AU effects, I did note a 1503 carrier, likely from NZ yesterday. NZ would be nice and I recall visiting Ray Moore in Ft Myers and catching the ID's from Radio Sport on a recording he had of them. 

73 KAZ Barrington IL

-----Original Message-----
>From: Nick Hall-Patch <nhp@xxxxxxxx>
>Sent: Mar 21, 2015 9:20 AM
>To: Mailing list for the International Radio Club of America <irca@xxxxxxxxxxxxxxxx>
>Subject: Re: [IRCA] New DU heard in Michigan this morning!
>
>Fantastic catch Tim.   How do you manage to get the fade up at the ID 
>hi?  And the direction of reception is pretty intriguing also.  It 
>would be interesting to get an exact bearing; its fading pattern 
>doesn't sound  particularly high angle.
>
>In contrast, only the weakest carrier here on that channel this 
>morning, but the  (presumed, judging by the music) Saturday Night 
>Country program was OK for a couple of minutes on 702.
>
>best wishes,
>
>Nick
>
>
>At 13:48 21-03-15, you wrote:
>>I've been chasing a carrier on 1548.01 for the past month or so during
>>sunrise which has been strong at times but never with any audio making it
>>through the domestic splatter.  Like previous SRS DXing sessions, the
>>1548.01 carrier was there again this morning.  And oddly enough, it always
>>appears strongest on my North D-KAZ.  It's not even present on the South
>>D-KAZ and it's barely there on the Southwest phased BOGs.  The same
>>reception pattern holds true for the domestic Aussie broadcasters in the
>>120 meter shortwave band.  They always come in better on the North D-KAZ.
>>As sunrise approached here this morning at 1147 UTC, I could see 1548.01
>>gaining in strength until some weak music could be heard - specifically Jim
>>Croce's "Bad Bad Leroy Brown".  Things only got better from that point when
>>I heard two Aussie accented ladies talking about the music between each
>>song selection, and finally catching this announcement from one of them:
>>"you're listening to ABC Local Radio".  Finally nailed 4QD Emerald, QLD.!
>>Audio lasted until about 1140 UTC until it faded down to just a carrier
>>again.  I posted a bit of this to YouTube here:
>>https://www.youtube.com/watch?v=00ea9cVsboo
>>
>>No other DUs noted here this morning and surprisingly nothing but a weak
>>carrier from 738 Tahiti which has been decent at times during the past few
>>mornings.
>>
>>73,
>>Tim Tromp
>>West Michigan
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