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Condition: This equipment comes from flea markets, hamfests and estates, and unless otherwise stated they are complete, appear to be in good condition, but are unused and untested by me. Since tube condition (if used) is unknown, and such items as electrolytic and paper capacitors degrade with age and switch contacts oxidize, you should assume the equipment needs testing and possible repair before placing in service. In other words, unless otherwise stated, all items are offered untested and as found.
Signal Corps WWI trench transmitter
This is a Signal Corps portable spark transmitter marked SCR-74-A, made by American Radio and Research Corporation (AMRAD), New York NY and Medford Mass. (Reference BC-18A.) It has the instructions and schematic in the lid, and an original paper tag attached (not filled out) with AMRAD's Medford Hillside address. This consists of an induction coil, spark gap, battery meter and telegraph key. The large terminals on the left marked ANT and GND and are for attaching the antenna and ground to the set. The compartment on the right is for the 10 volt battery. There is a rubber cover so that the telegraph key can be operated with the lid closed, and two mica windows in the lid for observing the spark gap and the amp meter. Additional information is on this PDF page.
This military wireless set was designed for reporting from the trenches as described by Capt. A.P. Corcoran, "Wireless in the Trenches," in Popular Science, May 1917, pages 795-799: "The wireless, as I have said, is now an essential part in all trench warfare. When the infantry adavances to an attack, the operator is always slightly to the rear. Where formerly a detachment of men had to reel out hundreds upon hundreds of yards of cable to establish telephone communication between a trench newly taken from the enemy and the first line reserve behind, now the operator simply picks up his box, his ground mat and his aerial singlehanded and advances simultaneously with the attackers. Arriving at his new position, he props up his aerial, lays his ground mat and communications are established almost at once. It would be hard to overestimate the importance of his duties. When an enemy trench is being taken, it is he who reports the progress of the encounter-- the number of the enemy, the nature of their defence, the amount of the casualties on either side, the condition of the trench when it is finally taken-- whether it has been badly damaged by artillery fire, or whether it is practically intact. If a gas attack is coming, it is he who sends the warning to the men behind to put their gas helmets on."
This particular set was probably made after the end of the war, around 1920 or so. It appears original and complete and in good condition, with the exceptions that there is no battery and the web carry strap is broken. The case is about 11-1/2 x 12 x 6 inches. It weighs 20 pounds. A scarce addition to your early wireless or military radio collection.
Photo 2 Photo 3 Photo 4 Photo 5
$5,495.00 includes US shipping lower 48 states.
Vintage Bud variable condenser in box..
This is a new-old-stock (unused) BUD no. JC-1566-A dual junior transmitting condenser, max cap 18 mmfd per section, min cap 6 mmfd per section, air gap .175 in its original box. The box measures about 3-1/2 x 3-1/2 x 8 inches; the corners have some wear but the blue and yellow colors are still bright. Use the condenser (today, capacitor) in a homebrew transmitter and the box for display. Second photo $15.00 (S&H=$7.00) Inventory #BUDCAP603
#L1006COE Leach Break-in Relay.
Model 18 type S-1. The wireless radio break-in relay was invented by Val Leach in 1919. When sending (with a key), the relay controlled the power contacts and also switched the antenna to "receive" between dots and dashes; thus one could listen in while sending and permit the other party to "break in."
This early model has the San Francisco address, and so dates before 1929. The heavy Bakelite base is 4 x 5 inches, and 3/8" thick. The main contacts are a huge 5/8" diameter. This is in very good condition. The coils test good with an ohmmeter. Larger photo
Also see this flyer for more information.
#HD19 Heathkit Phone Patch.
Heathkit model HD-19 hybrid phone patch, with manual. This item from 1960 was used to transfer audio signals between telephone lines and radio communications equipment. This is in very good cosmetic condition and includes the original manual (also very good condition) that describes assembly, installation and operation.
$39.00 (US shipping = $10.00)
Heathkit CR-1 Crystal Receiver
This is the scarce crystal set made by Heathkit in the 1950s. The case is about 3 x 6 inches and 2 inches deep. This is in excellent cosmetic condition, and it will look even better when you clean the panel. It is operationally untested but the circuit appears original and intact.
#1104TTL Spark coil with interrupter.
Here is a rarely-found wireless (spark) coil and interrupter contact assembly. It includes the usual capacitor (called a condenser in those days) below decks - see the second photo. This is rather large and heavy... the wood base measures 5 X 9 inches, the coil is about 1-3/4 inches in diameter X 3-1/2 inches long, and the shipping weight is about 5 pounds.
The coil and interrupter are mounted on what appears to be an asbestos plate, with the condenser between the plate and the bottom wood base. There is no maker's name to be found; this may be a home-assembled item. The coil seems to be good at 500 ohms, but the operating condition of the assembly is unknown. Coil-interrupter sets are quite scarce; this is offered as a vintage display item. Photo 2
$245. (S&H = $12.00)
#211R22A Navy Air Force headset.
Military headset with R22A earpiece. The element is marked WECo (Western Electric) D-141915 and dated 1943. The rear brass cap unscrews for making cord connections. The plug is marked NAF No 1136-1. It appears to be in good used condition but is untested.
$29.95 (S&H = $12.00)
#Unusual military item.
Not communications related, but certainly of interest to the military collector, so here it is:
This is a great item for the advanced military collector or museum. This unusual and scarce find will not be identified here, but is described in the photos. It is in excellent condition.
I will sell this to a USA collector only. Payment by USPS money order for this item. Note, I do not have any associated or accessory gear with this.
$195.00 (S&H = $12.00)
COLLINS military antenna coupler:
Handbook of service instructions for the ANTENNA COUPLER CU-351/AR and CU-509/AR, 15 March 1956, revised 15 August 1956. Pre-publication issue. 8-1/2 x 11 inches, 91 pages plus index. This covers the airborne antenna couplers used by the military with aircraft transmitters. (These couplers are also used by amateur radio operators with ground-based antennas.)
"This is an unofficial publication printed by Collins Radio Company for advance distribution. It will be superceded at a future date by NAVAER 16-35CU351-502, published and distributed by direction of the Chief of the Bureau of Aeronautics."
Contents include description, test equipment and special tools, preparation for use, theory of operation, performance standards including preflight inspection, trouble analysis, field maintenance, diagrams, etc. Many photographs.
Very good condition, complete and unmarked. (This is an original, not a reprint.) photo2 ... photo3 ... photo4
#2C56 ... $125.00 (S&H=$6.00)
Tower ship speaker.
An old, rare cone speaker. The frame is cast iron; the circle is 17.5" in diameter, and the overall height is 18". Needs restoration: The paper cone is gone, the painted finish is stained, the coil tests good. This is one of the most impressive cone speakers you could add to your display. Second photo. $295 (UPS S&H = $16.00)
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