[Lowfer] [600MRG] WH2XIL 137.7798 and 470 kHz

[jrusgrove at comcast.net]

Warren

Interesting. Wonder what the impedance change is ... some R some X or all R or all X.

Jay

----- Original Message ----- 
From: <k2ors at verizon.net>
To: <lowfer at mailman.qth.net>
Sent: Thursday, June 02, 2016 8:16 AM
Subject: Re: [Lowfer] [600MRG] WH2XIL 137.7798 and 470 kHz


> Jay,
>    The reason I dropped the power down is that the OGD is sensitive to ground moisture, when the 
> ground is really dry the antenna impedance drops and the Class-D transmitter will deliver more 
> power, sometimes causing an over-current trip out. The difference from dry to wet conditions is 
> greater than 3:1  in terms of power output.
> The power drops as dew forms at night and the impedance rises. It drops by an almost 4:1 ratio 
> after a heavy rain.
>
>
> 73 Warren K2ORS
> WD2XGJ
> WD2XSH/23
> WE2XEB/2
> WE2XGR/1
>
>
> On 06/02/16, k2ors at verizon.net wrote:
>
>
>
>
> Hi Jay,
>
>
> I am leaving it on, however I dropped the power down quite a bit this morning to about 36 Watts 
> out since I am away until sometime this afternoon.
>
>
> 73 Warren K2ORS
> WD2XGJ
> WD2XSH/23
> WE2XEB/2
> WE2XGR/1
>
>
> On 06/02/16, jrusgrove at comcast.net wrote:
>
> Warren
>
> Tnx info.
>
> That's by far the loudest I've heard you're station transmitting on the OGD (on ground dipole). 
> Will
> it be on during the day today and again tonight?
>
> Jay
>
> ----- Original Message ----- 
> From: "Warren K2ORS" <k2ors at verizon.net>
> To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands" <lowfer at mailman.qth.net>
> Sent: Thursday, June 02, 2016 5:32 AM
> Subject: Re: [Lowfer] [600MRG] WH2XIL 137.7798 and 470 kHz
>
>
>> Jay,
>> Ground dipole, aprox 80W. I did wind a new transformer for the dipole using FT-240-77 8 turns
>> primary, 12 turns secondary.
>> Thanks for the advice and nice audio clip!
>>
>> 73 Warren
>>
>>
>>
>> On 6/1/2016 10:14 PM, jrusgrove at comcast.net wrote:
>>> Warren
>>>
>>> Power, antenna on 470 kHz?
>>>
>>> Short .mp3 at http://www.w1vd.com/WH2XIL060116.mp3 .
>>>
>>> Jay W1VD WD2XNS WE2XGR/2
>>>
>>>
>>>
>>> ----- Original Message ----- From: "Warren" <k2ors at verizon.net>
>>> To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands"
>>> <lowfer at mailman.qth.net>
>>> Cc: <600mrg at w7ekb.com>
>>> Sent: Wednesday, June 01, 2016 3:45 PM
>>> Subject: [600MRG] WH2XIL 137.7798 and 470 kHz
>>>
>>>
>>>> WH2XIL 137.7798 QRSS 60
>>>> and
>>>> 470 kHz CW
>>>>
>>>> Reports welcome!
>>>> 73 Warren
>>>>
>>
>>
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