[SixClub] A mono band amp

K8RI on six 50MHz at rogerhalstead.com
Fri May 27 19:03:09 EDT 2011


On 5/27/2011 3:50 PM, doc at kd4e.com wrote:
> Running in parallel?
>
> Into a phased array of twenty 11-element beams
> on a 200' tower ... turned by a pair of hungry
> mules chasing a carrot?
Power of 2; 1, 2, 4, 8, 16, 32....
If the matching network were lossless each doubling would be another 3 
db.  so if you have an antenna with 16db gain, 2 = 19, 4 = 22, 8 = 25 
and 16 = 28 db. So a 100 watt signal would have a bit over 5 doublings 
or  roughly an ERP of 3200 wats with one antenna. 6400 watts with two , 
12,800 with 4, 25,600 with 8 and 51, 200 with 16.  If you actually do 
the math it's a bit more than that.

Now as one of those tubes can easily put out 5 KW you'd have 160KW ERP 
out of the single antenna. or a tad over 2.6 mega watts ERP.

Some one with more ambition than I could take the formula and work it 
out for more precise numbers. <:-))

BTW I have two of those tubes on the shelf along with a pair of 
4CX3000A7's and sockets.


73

Roger (K8RI)

> ;-;
>
>    Richard J. Fiero II W5TFW wrote:
>> 2 of them DOC !
>>
>>> Joey,
>>>
>>> Is this what you are running on 6?
>>>
>>> http://www.directivesystems.com/YC156.htm




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