Re: [IRCA] Chicago Stations Off Air / rolling DX tests?

[Stephen Airy <pianoplayer88key@xxxxxxxxx>]

Any chance that someone could get some of the stations out west to shut off their transmitters (like 670 KIRN, KMZQ, KBOI & KLTT, 720 KDWN, 780 KKOH, KAZM) for a short period at the time (probably 3am PST/PDT?) when the Chicago stations fire back up, and get the Chicago stations to do brief tests (maybe 5-10 minutes each)?  Also what do you (or anyone else) know of having KIRN, KMZQ, KBOI, KLTT, KDWN, KKOH, KAZM, etc test with their 50kW ND rigs (or whatever their max power is for each station - for example KIRN is 5kW/3kW DA-1)?

Also it'd be interesting to sometime get WJR off so KFMB (local for me) could run 50kW ND for a test sometime (they run 5kW ND day, 50kW DA night normally)... which reminds me - a rolling test may be interesting on that frequency.
First, WJR would test for 50 minutes starting at :05 (while KFMB and KKZN are off).
Next, after they've been off 10 minutes, KKZN would test starting at :05 the next hour (10 minutes each of day power (50kW) / day pattern, night power (1 kW) / night pattern, day power / night pattern, night power / day pattern, max power (50kW, day) / ND), then would sign off for 10 minutes.
Finally, KFMB would test for 50 minutes (12.5 minutes each of day power (5kW) / day pattern (ND), night power (50kW) / night pattern (DA - cardioid patternnulling toward Detroit, most of the signal thrown west), night power (50kW) / reverse night pattern (switching the pattern around so the null is 180° opposite what it normally is), then night power (50kW) / day pattern (ND)), then would sign off for 10 minutes.
Then, at :05, everything would return to normal.  (Not sure which time to start the tests - starting at midnight Detroit time may be too early for San Diego to go off the air, and starting at 1-2am San Diego time might mean Detroit is off the air too late in the morning, and have sunrise on the east coast toward the end of the test.)



________________________________
 From: "Paul B. Walker, Jr." <walkerbroadcasting@xxxxxxxxx>
To: bill kral <jwkral@xxxxxxxx>; Mailing list for the International Radio Club of America <irca@xxxxxxxxxxxxxxxx> 
Sent: Wednesday, February 29, 2012 4:49 PM
Subject: Re: [IRCA] Chicago Stations Off Air
 
WSCR, WGN and WBBm are the ones that will be off, as originally reported.

I am working on one Class B on one of these channels and a Class D on
another to see if they can test

Paul



On Wed, Feb 29, 2012 at 7:40 PM, bill kral <jwkral@xxxxxxxx> wrote:

> How many Chicago stations are going to be off air? Just the Big Four or
> maybe more. How close together are their TX sites? Close enough to be off
> air due to a hydro outage in the area or some other common reason? And if
> that's the reason they would go to back up generators and run a reduced
> output TX. A few nights ago 3 of the big 4 were audible here due to
> extended fading of KBOI, KDWN, KKOH. KOMO is too close for fading and I
> don't have the capabilty of nulling a signal to let a distant one in. I
> don't think that any of the big guys occupying the same freqs out west will
> do DX tests at night since they do scheduled network shows overnight.
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