Radio age (Jan-Dec 1924)

20 RADIO AGE — "THE MAGAZINE OP THE HOUR' The foregoing letters speak pretty well for this circuit. In a postscript, Mr. Drechsler says, "I can tune anything out that I want to." You fellows who have been having trouble with your sets, dig up that April issue and get posted on this circuit. /I&Q//91 The users of Cockaday sets are by no means back-numbers this month. Those using this circuit are getting a great kick out of the long distance range it affords as the following will explain: Madison, Wis. RADIO AGE, Pickups Department, Gentlemen: I have read several numbers of your journal with considerable interest. I am the enthusiastic owner of a Cockaday Four Circuit Tuner and have read the letters in your last issue as sent by others using the set. Last year I used a regular Armstrong regenerative set with a variocoupler and two variometers. During my vacation last summer I had time to read up on the newer circuits in the radio journals and read the description of the set in RADIO AGE and how to build it. Have had it working since September 16. I can heartily endorse all other users have said about the set and think I have some pretty good records myself. My set was constructed from parts in the old set with the necessary additional parts. It has the regular arrangement with two stages of audio frequency amplification. Last year I had 137 stations on my map of North America and since setting up the Cockaday set have added thirty-five making 172 that have been heard in less than twelve months as I put in my last year's set at Christmas time. I have heard about 125 of the 172 stations this fall with the Cockaday set and can get easily fifteen to twenty stations any evening if I want to stay with it. The best record I have made was on October 20, when I heard the following stations from 7:30 until 11 :20 p. m.: WOC Davenport, Iowa WHA Madison, Wis. KFIC Fond du Lac, Wis. WDAP Chicago, 111. WDAF Kansas City, Mo. WBAP Fort Worth, Texas WDAO Dallas, Texas WMAQ Chicago, 111. KYW Chicago, 111. WHAS Louisville, Ky. KDKA East Pittsburgh, Pa. WGR Buffalo, N. Y. WEAH Wichita, Kans. WOQ Kansas City, Mo. WHN Ridge wood, N. Y. WTAM Cleveland, Ohio WLAG Minneapolis, Minn. WOAW Omaha, Neb. WSB Atlanta, Ga. WBAK Harrisburg, Pa. WSAI Cincinnati, Ohio 9XM Madison, Wis. KFKB Milford, Kan. KFI Los Angeles, Calif. KGO Altadena, Calif. The above list of twenty-five stations covers almost the entire length of wave ranges, except KSD, and I have heard them often so the set has plenty of range, and covers most of the United States and Canada, as I have heard six Canadian stations from Calgary to Montreal. Its freedom from body capacity, sharp tuning and loudness are a joy to every 22fk 6&Q0AU7 Figure 2. This shows the connections of the first tube set, readers have accomplished long distance records. with which several of our one. My set brings in all of the stations of 500 watts and over on a loud speaker in my 500 mile radius, and KDKA, WGY, WOR, WJZ, WSB, WFAA, WBAP and KLZ as well. The letters from the fans with the different sets are very interesting. KEEP IT UP. Yours very truly, WILLIAM H. WRIGHT. Associate Professor of Agricultural Bacteriology, University of Wisconsin. There "ain't" no bacteria on the Cockaday, is there, professor? The fellow who puts in a Cockaday gets blisters on his fingers from holding the pencil in his hand all the time to log the many stations he hears. And what's more, the fellow who uses a four-circuit tuner doesn't let any grass grow under his feet when it come? to getting the long distance stuff. Memphis, Tenn. RADIO AGE, Pickups Department, Gentlemen: Just a little line to let you know that on the evening of November 27 I picked up WTAS, Elgin, 111., and WCAS, Minneapolis, Minn., over a friend's Cockaday. I believe that this is a record for a station of small power, with WMC, my local station, going full blast. Very truly yours, JAMES P. COOPER. The above letter is just one of many we receive, praising the selectivity of the Cockaday set. The following communication is just another reason why we said that the Kopprasch fellows have a flying start: 242 Vine Street, Council Bluffs, Iowa. RADIO AGE, Pickups By Readers Department. Gentlemen: I noticed in your reference to Mr. Fleckenstein's list of stations in your November issue, that you want to know how about the Kopprasch fellows. Well, here i9 from one of them and I kind of think I have him beat. Here is my list for November only: Stations WJAZ WHB, WLAN, WGY, WAAG, WDAF, WOS, WDAG, WSAP, WLAG, PWX, WDAP, WFAA, KPO, WAAF, WOAI, WCK, WHAS, WSB, WCAS, WCAH, KSD, KDKA, WPAL, WLW, WOAA, KLZ, KFI, WAAK, WWJ, WJAX, KYW, WPAD, WWI, WKY, WTAM, WEAH, WOC, WLAJ, WJAD, WOO, KWH, WGR, WMAQ, WEAF, KHJ, WBAH, WHA, WSAI, WJAS, WRM, WGAY, WCX, WMC, WKAA, WCAM, KFKA, WFY, WPAH, WBAP, WCBD, CKCK, KGW, WTAS, KSS, WNAP. The above list was logged just as received, and does not include outlocal stations WOAW and WAAW, two very powerful stations which I succeeded in tuning out a number of times, and when you can tune out either one of them, you are going some, as they are only four miles off. While I am writing this, I am listening to a very nice concert from WDAP, Chicago. It may help some of the Kopprasch boys if they will add a 43-plate variable condenser in series with the antenna, hook up stator to antenna and rotor to antenna binding post on set; find it helps a great deal with my three WD 11 tube Kopprasch receiver. From the other lists that have been published, I think the Kopprasch is holding its own pretty well; one station I overlooked in my list is CFCN, Calgary, Alberta, Canada. I had them for a short time but was cut out by another station. Respectfully, R. L. SHEWARD. It looks like we misjudged these Kopprasch fellows! While the other fellows were busy writing about how many long distance stations their sets could receive, the Kopprasch users were evidently busy tuning in a few extra ones to make their lists overlap the rest. That's SOME list, if you ask us. R. R. O. Box 118, Indianapolis. RADIO AGE, Pickups by Readers Department. {Continued on page 44.)