TAP No. 27 - November 1974
Yes, after 6 months in the pits we're back! Our unannounced vacation took place for several reasons the main one being a shortage of help and a surplus of work. By now we have sold a lot of back issues & the income has helped to put us solidly in the black. We will try to come out fairly regularly from now on, but this depends also on reader contributions & printing costs. We are also planning a 1975 Convention and need ideas for the convention from everyone. Possibly contests and exhibits and such. Please write to us if you've got suggestions. In addition, we will be having technical seminars as always. If you are well-versed in any phase of phreaking covered in TAP or otherwise, please get in touch with us to teach at the convention.
And the dialing instruction plate could be put back in, obscuring the hole and allowing nefarious individuals to continue their plundering-TAP.
NEW BLUE BOX INFO
We've gotten feedback on the New Blue Box Circuit (Issue 26). One problem of the circuit is that all the diodes for one frequency must be matched. The Motorola Silicon dual diode MSD 6150 (common anode) saves PC board space and is a matched pair. 25c each in 100 quantity. If regular diodes are to be used, use only silicon. Though we said germanium diodes are ok, they usually have too much leakage current and the pots will cross-affect each other. In fact, you can eliminate the hassle and matching of diodes altogether by using double-pole pushbuttons. Polypaks sells a $6.88 General Telephone Data entry keyboard with 10 buttons. You'll need 2 more DPST and a SPST for 2600, but you'll save money on diodes. The same 10 trimpots are used. And keep the wiring to the pots and switches good and secure electrically. A loose connection is a changing frequency. We also have an unchecked report that eliminating diodes with double pole switches makes the regulator unnecessary.
Dear TAP, as for picking Medeco and Keso locks you can for get it.
Medeco is a sidebar type of lock like the Briggs and Stratton locks
G. M. uses in their cars. Locksmiths usually use codes for auto locks
as they can't pick them. A more efficient methhod for vending
machines would be to use an awl & 5 lb. hammer to make a hole in
the sheet metal of the cabinet and then-a nibbling tool (for
electronic construction) to enlarge the hole enough to reach in and
disengage the lock cylinder from the locking bolts. The nibbler can
be bought at Lafayette or Radio Shack but may not cut through all
thicknesses of machine doors.
(C) Youth Hot Line Reports, Inc. 1974 Movement qroups may reprint with TAP's address, and please send us a copy of reprinted work.
TAP No. 27 - November 1974