[600MRG] WE2XGR/1 513.5 CW On Ground Dipole ***New Balun ****

[Warren K2ORS]

Frank,

      Yeah you are completely missing the point.
There are no 'guesstimates' involved, only exact measurements.
73 Warren


On 10/9/2015 4:38 PM, Frank Lotito wrote:
> Warren - Your initial balun warming up 16 F over ambient does not seem bad, at least not to me.  However, inferring a better balun by using some else's experimental result which relied on "sky in the pie" guestimates of overall antenna efficiency is way to far out regarding a particular component's efficiency.  Or am I missing something?
>
> 73 Frank  K3DZ / WH2XHA
>
> ________________________________________
> From: Warren K2ORS <k2ors at verizon.net>
> Sent: Friday, October 9, 2015 4:28 PM
> To: Frank Lotito
> Subject: Re: [600MRG] WE2XGR/1 513.5 CW On Ground Dipole ***New Balun ****
>
> Frank,
>
>       1st balun warmed up by 16F after transmitting for a few hours (this
> was in open air with no enclosure and an average of 25W [actually 50W
> and 50% duty cycle]). New balun was custom made for Marshall W1HK and
> tested by him, his on-ground dipole gave an efficiency of 2.5% (60 W
> from transmitter resulted in 1.5W ERP.
>
> 73 Warren
>
>
> On 10/9/2015 4:24 PM, Frank Lotito wrote:
>> Warren - When you say "more efficient" balun for your on-the-ground antenna experiments, what do you mean?  The prior balun got red hot and burnt out, while the new design balun only gets slightly warm?
>>
>> 73 Frank K3DZ / WH2XHA
>> _______________________________________
>> From: 600MRG <600mrg-bounces at w7ekb.com> on behalf of Warren K2ORS <k2ors at verizon.net>
>> Sent: Friday, October 9, 2015 4:15 PM
>> To: Discussion of the Lowfer (US, European, & UK) and MedFer bands; 600MRG
>> Subject: [600MRG] WE2XGR/1 513.5 CW On Ground Dipole ***New Balun ****
>>
>> Trying the on-ground dipole again, this time with a new and more
>> efficient balun.  CW on 513.5, hopefully far enough away in freq from
>> NDB YWA.
>>
>>     Reports welcome!
>>
>> 73 Warren K2ORS
>>
>>
>>
>>
>
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