[BC] While Jeff's away...

[JYRussell@academicplanet.com]

Hmmm.  Right now I probably could borrow one.
Hadn't thought that far "down the line" I guess.

   Jason
----- Original Message ----- 
From: "Milton R. Holladay Jr." <miltron at mindspring.com>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Sent: Monday, July 24, 2006 10:54 PM
Subject: Re: [BC] While Jeff's away...


> Put in a well and water pump, or..........
> Removing the blue dots is _not_ the right thing to do; resetting the input
> match at the ATU _is_.
> Borrow a Delta bridge, or failing that, try moving the coil taps over one
> turn one way or the other, one at a time, until you get a better match.
> Be sure to make notes on what you've got now so you can get back there
> later.......
> M
> ----- Original Message ----- 
> From: "JYRussell at academicplanet.com" <jyrussell at academicplanet.com>
> To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
> Sent: Monday, July 24, 2006 11:22 PM
> Subject: Re: [BC] While Jeff's away...
>
>
>> Ok, I'll ask...
>> Description:
>>    the unit is a 1996 ND1 1Kw  AM non-d 184' stick, 1400cycles.  Got a
>> really strong ground system... I'm not looking at the license right now,
> but
>> it's got the full complement of both long and interspersed short
> radials...
>> it all works out to at least 1 degree apart spacing.
>>
>>    Traditionally, this rig shows total TPO and reflected power rock
> steady.
>> No IBUZ , just straight stereo audio.   About 21amps/71volts.    1Kout,
>> around 4 watts reflected.
>> ATU looks fine, no fire ants, or weirdness.
>>
>> The only fluctuations come about seasonally with ground water
> saturation...
>> in the wetter months, the soil conductivity improves significantly, so 
>> the
>> reflected power drops to nearly 0, the transmitter can then start to show
> an
>> increase TPO which you'll have to trim out manually until the unit 
>> settles
>> in to the new "wetter" conditions.
>>
>> Of course, the opposite is true as the soil dries out.
>>
>> Well... here we go.
>>    This is NE texas, and we've again had a serious drought. Cracks in the
>> soil as much as 6 inches across, and you can look down into them several
>> feet.  Of course this is exposing radials, haven't as yet had the chance
> to
>> see if any are broken, but remember, as the soil shrinks, it also shrinks
>> AWAY from most fixed items which cannot also shrink... so the radials are
>> likely doing fine... just loose and very dry., at least for the vast
>> majority, as well as the ones I can reach in a wiggle, I'm sure.
>>
>>     PROBLEM this year is that I'm running out of 'twiddle room' for the
> TX.
>> You can twiddle it all you want... 925 or so is all you're going to get.
>> Maybe 950. Normally, you can dial it up and down well beyond the +5 -10
>> percent...
>> Now, it's just down with a ceiling below 1k.
>>
>> So....
>>     I thought before I pulled any of the "sticky dots" off pots inside to
>> get a bit more range on the front adjust ment, I'd start asking to see 
>> how
>> likely it's simply a matter of soil wetness... or if I need to look
>> somewhere else.
>> the reflected power is still low, but I am noticing more +125 spikes on
> the
>> mod monitor than is proper, so I've pulled things back a bit coming out 
>> of
>> the processing.
>>
>>    I've even thought about asking the local FD to start flushing their
> tanks
>> on the property (without blasting holes, TYVM!) to see if that helps.
>>
>>    Think I ought to just leave it be?  If it continues to drop it will be
>> too low for the license.
>>
>> Jason
>>
>
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