Bd 71 switchboard manual pdf

Technical manual, telephone switchboards handbooks, manuals, etc. The use of the term switchboard bd72 in this manual will include. Bd 71 military world war ii signal corps bd 71 field switchboard. Dodge m37 historical photographs dodge m37 and military.

United states war departmentdepartment of the army technical manual collection. Telephone switchboard operating procedure united states. Field telephones, bd 71 switchboard and residential crank phones. I restored this set to full operating condition, thanks to steve hilz for the spare parts. User manuals, lg dvd player operating guides and service manuals.

Read it very carefully and make sure you install it according to these instructions. The capacity of swit chboard bd 71 i s 6 lines while that of switchboard bd 72. Three bd 110a switchboards on left and one bd 96 on extreme right being operated by pfc. Army bd 71 switchboard was used during world war ii and korean wars by many units for field or camp communications. Fm 2475 telephone switchboard operating procedure, 1944. Military radio accessories surplus city jeep parts. This document contains information affecting the national defense of. The major problem was actually the micheadset not working. Operational information on the bd71 field telephone switchboard. To obtain additional line capacity, an auxiliary bd 71 may be connected in parallel with either a bd 71 or bid72, and the combination can be operated as a single switchboard, using the operators telephone set of only one of the switchboards. Switchboards, telephone, manual sbpt and sb22apt 17 february 1961.

This unit was refurbished in the 1950s back to new condition. Appears to have some of the internals removed, great for restoration or display piece. Preliminary instructions for switchboard bd 71 preliminary tm130 na okay condition. Furthermore we describe all function of the switchboard. The use of the term switchboard bd 72 in this manual will include the switchboards bd 72a order no. This manual, published at camp crowder missouri, covers the operation of the bd 71 and bd 72 switchboards, along with wire splicing, ee8 field phone operation, pbx operation, bd 96 operations, and all sorts of special tools used by the signal corps in wwii. Trains and troops strasburg, pa on 45 november 2017, the. This is the center piece for ww2 communication set for command tent andor hq and companies. Switchboards bd71, bd 72, bd 72a, and bd 72b by united states. Series tm6, tm7, tm8, tm9 science reference guide research finding aids from the library of congress, science reference services. Bd 71 acc military world war ii signal corps bd 71 accessory pack.

References instructions for switchboards bd71 and bd 72, us army technical manual collection, from the cecom historical office archive, aberdeen proving ground, md. Included with the switchboard is the original headset assembly with chest microphone, 2 original ee8 ww2 type field telephones, an original tm130 switchboards bd 71, bd 72, bd 72a, and bd 72b 1943 manual with cover dated 1943 and original wood case that has fold out field legs not often encountered on many models. This was the larger of the two switchboards and could connect 12 ee8 field telephones together. Switchboard user manual laurel bridge software, inc. Use 1 1 characteristics 2 1 components 3 1 weight and dimensions 4 5 ii.

Though it is heavy for one person to carry, it is compact enough to not take up much table, floor or car space, and easy to demonstrate wwii military switchboard technology, and comparable to 1900 residential switchboard technology. The manual is divided into 14 chap ters as follows. This manual supersedes clapter 8, fm 245, 19 october 1942. Switchboards bd 71 and bd 72 are improved, portable monocord switchboards designed to provide all requisite facilities for terminating, interconnecting, r inging and supervising telephone lines. Eaton 93pm sidecar integrated accessory cabinettie and tie bypass 50 kw and 100 kw siact, 50 kw and 100 kw siactb installation and operation manual english us 12apr2017. Box is complete, but the internal components are not.

Tm 130 switchboards bd 71, bd 72, bd 72a, and bd 72b, 19431029 table of contents paragraph page section i. The use of the term switchboard bd72 in this manual will include the switchboards bo. Army or other headquarter complete transportable multiple type magneto and common battery central office set in which the three switchboards bd 110 differ from the switchboards bd 80 in being trunk type with handles and which requires no packing case. Title date quartermastercontinued 101707 portable ice cream plants, 2440 gallons, electric motor gear drive. Instructions on how to connect and use the rotary dial attachment for the ww2 german small, 10line field telephone switchboard. Place batteries in switchboard to which the operators set will be connected par. General switchboards bd 71 and bd 72 switchboards bd 9 and bd 11 switchboard sb5pt chapter 4. Topics of this manual following this introduction, you will find a chapter about how to install the switchboard software. The devices had six line capabilities that allowed direct line communications through the use of field telephones. Field telephones, bd71 switchboard and residential crank.

The four battery section of the bd71 switchboard is just for the night alarm and lights. Bd 71, bd 72, bd 72a and bd 72b switchboards these are covered in tm 130 only2 digits away from the ee8 manual number of tm 133. I recently worked on repairing two wwii bd 71 field telephone switchboards for a reenactor. If you have a bd 71 and you need some free technical support, feel.

Substation design manual i reference ni000401r121 ver 2 ergon energy corporation limited abn 50 087 646 062 ergon energy queensland pty ltd abn 11 121 177 802 revision history version description of change approval date revised by 1 initial version 250320 draft 2a. Used to connect a network of ee8 and tp9 field phones. United states war deptdept of the army tech manual. A longer view of the display showing the many railroad photos provided by pvt fortak to the left.

Military issue electronic communications equipment case cw503prc25. Switchboards bd 71 and bd 72 are portable, monocord, magnetotelephone switchboards for use primarily in field wire systems. Maintenance manual bc1147 bc1147a receiver reproduction. Symptom low tone out all the time, unless battery compensator turned too far, which produces a loud tone, which is normal. Original wwii us army signal corps bd71 field telephone. Manuals preliminary instructions for switchboard bd71. Tm 130 switchboards bd 71, bd 72, bd 72a and bd 72b 29 october 1943. Tmtechnical manuals range 115 army publishing directorate. General rotation of cords key sleeves passing of cords dialing multicord switchboards. Another view of the fire control and communications display shows the bd 71 switchboard in the center and two ee91 telephones on the far right of the picture on a table. Tm 11879 bc35 war department technical manual 1945 fm transceiver original. Ww2 german switchboard rotary dial attachment youtube. Signal corps switchboard operators handbook bd71 bd72. Click on the photos for larger image and links to documents on the equipment selected.

Dodge m37 historical photographs 8 august,2018 creinemann 37 cartoon from operators manual a not so secret place to show historical photos of the dodge m37 i have collected, scanned, found, researched or were sent to me. The bd 71 switchboard is a key part of crank telephone exhibits i do, both military and residential. Switchboards bd71 bd 72 preliminary issue 1 september 1937. Ww2 us army bd 71 portable switchboard with earphones and speaker as used with the generator, wire reel and ee8 hand crank telephones. All wooden construction with a series of switches and connectors in the inside. Very nice near new condition with legs that fold up. Pdf 17 view and download crown d series operation manual online. Full text of tm 130 switchboards bd71, bd72, bd72a. All telephones are connected to the switchboard and can communicate together. Bd71 switch board, us army signal corps army surplus.

The use oftheterm switchboard bd 72 inthismanual will include. Switchboards bd 71andbd72areportable,monocord, magnetotelephoneswitchboardsfor use primarily infieldwiresystems. A pdf reader must be installed in order to display information. The handset of a ee8 field telephone can actually be used in place of a micheadset.