[Elecraft] Rhombic antenna "gain"

[Fred Jensen]

Many of the VOA transmitters were 250 KW and ended up in religious SW 
broadcast stations.

There was a small group of hams who either tried, or succeeded, in 
getting permission to put one of the remaining Delano Sterba's on 160 
[and maybe 80].  I'm not sure if they were successful, I do know that 
the antenna farm you can see from the highway is significantly smaller 
than I remember from the late 50's.

I think the Half Moon Bay stn was KFS.  It's brother site was in the mud 
flats off of the Palo Alto shoreline in the Bay, all gone now.  At least 
one of the KFS transmitters is now operating at KPH.

Feed the termination power back into the antenna?  Conservation of 
energy? [:-)

73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 9/13/2019 5:47 PM, Jim Brown wrote:
> On 9/13/2019 4:18 PM, donovanf at starpower.net wrote:
>> To compound the design compromises, the r hombic termination
>> resistor throws away nearly 3 dB of whatever gain it might achieve.
>
> When our senior EE class toured Crosley's Mason, OH VOA site in 1964, 
> the engineers were quite proud of their modification to the design 
> that fed the termination power back into the feedpoint. All that 
> remains of that spectacular station is the transmitter building. When 
> we toured it, there were >25 rhombics and two Sterba Curtains. 10-15 
> years ago, my son worked as the manager for a restaurant/bar on the 
> land where the antenna farm used to be. Several years ago, I drove by 
> the VOA station at Delano, CA, about 45 miles S of Visalia. At least 
> some of the antenna farm was still there, but inquiry told me that the 
> transmitters were "somewhere in South America." At the time, I had 
> hopes of arranging a tour for Visalia DX Convention attendees.
>
> There are still some shore stations along the Pacific coast with 
> rhombics. The KPH TX and RX stations are 30-40 miles apart. There's 
> another RX station along Rte 1 S of Half Moon Bay, with an associated 
> TX station around Palo Alto.
>
> 73, Jim K9YC
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