KFVP's operating wavelength of 275 meters corresponds to 1090 kilohertz.
 
(Mitchell, South Dakota) Evening Republican, May 23, 1925, page 10:

STATE  COLLEGE  BAND  MEN WILL  ACCOMPANY  SUNSHINERS  TO  HILLS
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    Brookings, S. D., May 23.--Twelve South Dakota State College band men will leave here tomorrow afternoon to entrain with the Sioux Falls Sunshiners, who will leave Sioux Falls Sunday evening on their booster tour through the Black Hills, May 24 to 29.
    The State College men to make the trip are as follows: Director Carl Christensen, head of the music department at the college; Curtis Lundy, Castlewood; Clarence Solberg, Brookings; Walter Locke, Castlewood; Roland Cooper, Ipswich; Gus Schultz, Sutherland, Iowa; Raymond M. Endersen, Brookings; Forrest Shepperd, Brookings; Ellsworth Prather, Brookings; Robert Herman, Brookings; and Bentley Rask, Brookings.
    Bernell Bidne, Flandreau, also a State college man, left here today to prepare to accompany the Sunshine special as chief operator of the radio broadcasting station KFVP to be used on the train. Following an inspection of the station at Omaha last week, Bidne is very pleased with the radio equipment for the special train and is expecting excellent transmission with the apparatus. The station, with a wave length of 275 meters, will broadcast news talks and snappy musical numbers every evening during the trip.
Deadwood (South Dakota) Pioneer-Times, May 26, 1925, page 1:

SUNSHINERS  PROGRAM  FOR  BLACK  HILLS
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Will  Arrive  in  Deadwood  for  All  Night  Stay  at  6  This  Evening
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    Sunday evening at 10:30, the Sunshine State Special, carrying over one hundred representative business and professional men of Sioux Falls, left that city on its way to the west and after stopping at numerous town along the way, made its first stop in the Black Hills at Rapid City last evening, arriving there at 8:26. This morning the special will leave Rapid City at 7 o'clock, arriving at Belle Fourche at 1 p. m., after having stopped at the towns on the way. The schedule of the special while in the Black Hills will be as follows today:

Leave Rapid City
Arrive Black Hawk
Leave Black Hawk
Arrive Piedmont
Leave Piedmont
Arrive Tilford
Leave Tilford
Arrive Sturgis
Leave Sturgis
Arrive Whitewood
Leave Whitewood
Arrive St. Onge
Leave St. Onge
Arrive Fruitdale
Leave Fruitdale
Arrive Nisland
Leave Nisland
Arrive Newell
Leave Newell

Arrive Belle Fourehe  
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_ _ _		 A. M.  
7:00
7:15
7:20
7:35
7:40
7:50
7:55
8:15
8:38
8:55
9:05
9:25
9:35
10:25
10:30
10:50
11:00
11:20
12:00
P. M.  
1:00

    At Belle Fourche the party will leave the train and go by auto to Spearfish. Train will deadhead to Deadwood.
    At Spearfish the C. B. & Q will furnish a special train to consist of open top observation car and two coaches to bring the party to Deadwood. Several stops will be made at points of interest in the canyon.

Leave Spearfish
Arrive Deadwood
_ _ _
_ _ _
2:30
6:00
Wednesday, May 27

Leave Deadwood
Arrive Rochford

Leave Rochford
Arrive Mystic
Leave Mystic
Arrive Hill City
Leave Hill City
Arrive Custer
Leave Custer
Arrive Senatorium
Leave Sanatorium
Arrive Pringle
Leave Pringle
Arrive Hot Springs  
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_ _ _		 A. M.  
10:30
12:10
P. M.  
12:15
12:40
12:45
1:35
1:45
2:35
2:50
3:15
3:45
4:10
4:15
5:45

    Thursday at 12:01 a. m. the train will leave Hot Springs, arriving at Rapid City at 2:45 a. m. The party will go by auto to the cement plant, Sylvan Lake, the state park and game lodge and other points of interest as guests of the citizens of Rapid City. At 3:20 Thursday afternoon the special will leave on its way to the eastern part of the state and home, after having taken in every town of importance in the Black Hills.
    When the party arrive in Deadwood this evening, its members will be taken on a sightseeing trip to the summit of Mount Roosevelt and cars will be waiting to convey them thither. After they have returned and had dinner, they will be invited to attend the dance to be held at the pavilon in Amusement park, and will be otherwise cared for by committees from the Business and Lion clubs. As they will not leave Deadwood until 10:30 tomorrow morning they will have ample time to interview the business men and get acquainted with the people of the city. In speaking of the special and its itinerary, the Argus-Leader of Sioux Falls says:
    "This Sunshine trip will be the longest in the history of such tours out of Sioux Falls, or of any tour ever made by any South Dakota organization. The route extends 1161 miles. Starting Monday morning at Wolsey, about a quarter of the distance from the Minnesota border to that of Wyoming, the Sunshiners will go to the extreme western end of the state. Traveling west on the Northwestern road and back on the Milwaukee, they will cut a swath covering the southern third of the state. Sixty towns and cities will be visited.
    "Among the Sunshiners will be speakers who will tell the townspeople at every stop their messages of optimism and faith. To go a step further, the Sunshiners will be accompanied by two bands, one from the state university and the other from State college, who will furnish music for parades, which will be a physical exhibition of "pep" and confidence. Representatives of various concerns will distribute souvenirs from the state's metropolis in these stops.
    "The Sunshiners cannot cover the entire state, but they will do the next best thing by carrying along a radio broadcasting station, known as KFVP. Programs will be sent out on five nights of the trip, from Sioux Falls Sunday, Rapid City Monday, Deadwood Tuesday, Hot Springs Wednesday and Interior Thursday. The two bands and a Pullman quartet will assist in the programs.
    "The Sunshine Special will leave Sioux Falls at 10:30 Sunday night. It will run to Wolsey, where the visiting begins. The party will travel Monday to Rapid City, where the night will be spent.
    "On Tuesday morning there will be a jaunt to Bella Fourche, with stops along the way. At Belle Fourche cars will be furnished for a picturesque trip to Spearfish. At Spearfish the party will board observation cars on the C. B. & Q. for a trip through beautiful Spearfish canyon, coming out at Deadwood, where the night will be spent. The special will have gone there empty.
    "On Wednesday there will be a long jaunt south, from Deadwood to Hot Springs, visiting the sanatorium at Custer and other points of interest. During the night the special will take the Sunshiners to Rapid City, where on Thursday morning citizens of Rapid City will take them by auto to the state cement plant, Sylvan Lake, the state game park, game lodge and other points of interest.
    "At 3:55 Thursday afternoon the journey in the homeward direction will begin, and Interior, in the heart of the Bad Lands, will be reached by 7 p. m. Here there will be a big Indian pow-wow and other entertainment. At one minute part midnight the Sunshiners are scheduled to pack up again and move on. They will reach Belvidere by 8:20 a. m. Friday. Here the party will go by auto overland about 30 miles to White River, and after visiting this place will travel north to Murdo on the railroad line to board the special. The Sunshiners will leave Murdo at 1:30 p. m. and move homeward, visiting six towns, the last being Oacoma at 6:05. From there the special will proceed to Chamberlain, Mitchell and home, and will halt at the Omaha station some time near midnight, five days after the tour was started."
Lead (South Dakota) Daily Call, May 26, 1925, page 1:

SUNSHINERS  WILL  VISIT  LEAD  TOMORROW,  A. M.,  AT  DEADWOOD  TONIGHT
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Tour  Belle  Fourche  Valley  Country  and  Spearfish  Canyon  Today;  To  Return  via  Southern  Hills  to  Sioux  Falls.
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    The Sunshiners--over a hundred business and professional men from Sioux Falls--preaching the gospel of optimism--are due to arrive in Lead tomorrow morning shortly after 8 o'clock, according to word received last evening by R. G. Wayland, president of the Lions club. After a parade up and down Main street, and a brief trip through the Homestake works, the visitors will leave via Deadwood on their special train over the Burlington for the southern Hills on their return back to Sioux Falls.
    The Sunshiners left Sioux Falls Sunday night for the longest trip they have ever made. This morning they arrived at Rapid City, and during the day have visited points en-route to Newell and Nisland. They are due to arrive in Deadwood at 6 p. m., having come from Spearfish on a special train over the Burlington.
    Deadwood plans to give them an excursion up Mt. Roosevelt, dinner, and a dance at the city pavilion. The visitors carry a radio broadcasting outfit "KFVP", which is due to send out a program sometime this evening.
    Plans have been made in Lead to send down a large delegation of autos to Deadwood tomorrow morning to meet the visiting Sunshiners and escort them to this city.
Deadwood {South Dakota) Pioneer-Times, May 26, 1925, page 3:
 
KFVP rail car