WE 302 Field Trial Sets

D-95647 (Photos taken of Roy Basci's displays at the 2001 and 2002 TCI Labor Day Shows)
	Dated 1932 ( IV 32). This early model is a lot longer and somewhat narrower than the production model. The vents for the ringer are way at the back. Both handset and line cords exit on the left side, about 3/4 of the way back. The handset contains the early "bullet" transmitter, as the capsule F1 transmitter wasn't developed until 1934.
	The capacitor (D95648) is toward the front of the phone (left in photo), then a 101A inductor and the ringer, with gongs at the back edge. The ringer is an A1A. The switchhook is a simple DPST design (double pole, single throw). Note the wide fabric hinge used to protect the wiring between the base and housing.
D-97464 Bakelite (Photos taken at a display at the November 2002 Enfield Phone Show)
	At first glance, it looks like any other early 302 with E1 handset. Dated 1936. ( I 36)
	The bottom plate is metal, and obviously different from the later production sets. The feet are of similar shape, but thinner than the production feet and are riveted in place.
	Inside, the coil and capacitor are obviously different than the production model.  On this set, both are stamped in red "4579". The footprint was reduced by turning the ringer 90 degrees,  designing a smaller capacitor and tightning up the component placement.  Moving the ringer to the front of the set allows one gong to overlap the 101A induction coil. Notice that there are several interesting tabs along the edges of the bottom plate.  They fit into matching slots in the top shell to assure proper alignment.
	The apparatus blank in this manual model is also bakelite -- no insulated terminal strip needed, as on the production metal blank.
D-97464 Metal Most found D-97464s have a cast metal housing.  The base plate and internal components appear identical to the bakelite set above.  Metal sets were made in both the first and second quarters of 1936 - marked I 36 and II 36. A handset that looked a lot like the F1 production handset was used on some of the later sets.  The transmitter cap was made in 2 pieces, with a screen similar to that on the E handsets held in place with a bakelite ring.
D-97464 Metal - E Handset (Photos from Frank Ruffino and past auctions)
	D-97464 I 36
	Bottom View. Note that both cords come out the back thru one cutout. Both cords came out the left side on the D-95647, above. The production 302's handset cord exited out the left while the line cord went out the back.                    (Add your own joke punch line here.)
	Field Trial Station Number and Instructions.
D-97464 Metal - F-style Handset (Photos from Bob Loeser and past auctions)
	D-97464 II 36
	D-97730 Handset Has metal threads for the handset caps, similar to the E handset. The handle is seamless. The 2-piece transmitter cap uses the same fiber screen used in the E handset. Note that the Northern Electric NF handset also uses a similar 2-piece transmitter cap.    http://www.paul-f.com/neUNI.html  (scroll down)
	Sets with bakelite and metal housings use the same  model number. The internal components are the same, as expected.
	Here is the back of an apparatus blank in a manual (non-dial) metal set, showing the need for a terminal strip, as used in the production model.
Continue to the Rotary Set Development Timelines.