[BC] WLW Superpower Coverage

[Gary Peterson]

>It was my understanding that they only operated during experimental period
>and no commercials?     The even used a different call sign  during the
>operation between midnight and 6 AM.
>Dave

I recently acquired a collection of broadcast band QSL letters from the
1930s.  Among these are three letters with the Crosley Radio Corporation
letterhead.

One letter confirms reception of WLW, 50 kW on 700 kilocycles.  It also
mentions the existence of WSAI, 500 W on 1330 kilocycles.

The second letter confirms reception of WSAI, and mentions WLW.  It is
signed by John L. Clark, GM.

The third letter confirms reception of W8XO.  However, the letterhead has
the printed call letters of WSAI and W8XAL.  The text of this letter says,
in part: "This is to verify your report of reception of Station W8XO, the
new Crosley high powered experimental broadcast transmitter."  (paragraph)
"This high powered station operates under the call letters of W8XO on WLW's
frequency of 700 kilocycles, (428.3 meters) , with a power of 500,000 watts.
The Federal Radio Commission has authorized test of this transmitter daily
from 1:00 to 6:00 A. M. Eastern Standard Time.  We do not know definitely
when it will be possible to use this station for regular full day operation
as WLW."  This letter is signed by J. A. Chambers, Technical Supervisor.

Unfortunately, none of these Crosley letters are dated.   I have yet to go
through the envelopes.  Postmarks may supply date info.  One item in the
collection is a confirmation from WCBS, Inc. (100 W on 1210 kc) of
Springfield, Illinois.  Apparently, those call letters were in use in IL in
November of 1933.  I wonder if that call sign was abandoned or purchased by
Columbia Broadcasting System for use in NY.

Gary, K?CX
Rapid City, SD