[BC] WLS Tx History Update

[Warren Shulz]

The WLS aux antenna is licensed as a 199 ft vert. radiator built in 1986.  Al Resnick was job captain for the aux tower project.  They did not want to light the aux. tower nor cause a FAA look at main tower that was under a 1938 FAA determination.  So they went for a non-registered tower installation.  Vendor was World Tower with 18 in face and a massive 4x4 concrete base.  The design was duplicated at WBAP.  Tower is outside the fall radius of the 581 main and full 50 kW aux.  Result is 4.8 dB drop from main to aux at 50 kW.  Can run on these with few complaints.

Warren

-----Original Message-----
  From: peterh5322 at rattlebrain.com

All Chicago former Class I-As have second antennas.

I believe WLS was the last to construct theirs, and it was constructed as
199' and with no lighting.

The other Chicago former Class I-As had their auxiliary ND antennas long
before WLS's.

According to Warren (off-List communication), their 199' second antenna is
capable of 50 kW.

KFI's very short second antenna is capable of only 25 kW, but KNX's rather
taller (135 degrees, about 340 feet) second antenna is undoubtedly capable
of 50 kW.