Bs2 • 1 the bullshooter endless loop voice recorder ramsey electronics model no. Bs2c announcing an event is now easier than ever! Just say it once and hear it over and over. Easy transmitter hookup for broadcasting. • operates on 5 to 12 volts dc, 250ma at maximum volume. • records both line levels...
Bs2 • 2 ramsey transmitter kits • fm100b professional fm stereo transmitter • fm25b synthesized stereo transmitter • am1, am25 am transmitters • tv6 television transmitter ramsey receiver kits • fr1 fm broadcast receiver • ar1 aircraft band receiver • sr2 shortwave receiver • aa7 active antenna • sc...
Bs2 • 3 the bullshooter endless loop voice recorder ramsey publication no. Mbs2 price $5.00 table of contents introduction ............................................ 4 circuit description.................................. 5 bs2c parts list...................................... 7 parts layout diagr...
Bs2 • 4 introduction each of us at one time or another has probably heard an endless loop player repeating a list of movies playing at the local theatre, or advertising a house for sale through your car radio. Sure could be handy around the house occasionally, or maybe down at the local flea market....
Bs2 • 5 bs2c circuit description we will go through the bs2c section by section, but most circuitry that used to be in separate circuits in the bs1 has been fully integrated into the bs2c main chip. For example, you can switch between the microphone and line inputs digitally so you can select them u...
Bs2 • 6 sample rates. . . All controlled through a serial access method (called spi for serial peripheral interface) by the microcontroller. This truly is an amazing part! There are so many features that we couldn't take advantage of them all, but are using some of the best ones for this product. Th...
Bs2 • 7 parts supplied with bs2c voice recorder kit capacitors 9 0.1uf ceramic capacitors (marked 104) [c5,7,9,11,13,15,17,19,20] 2 0.01uf ceramic capacitors (marked 103) [c8,10] 1 10pf ceramic capacitor (marked 10p or 10) [c18] 1 4.7uf electrolytic capacitor [c12] 7 10uf electrolytic capacitors [c1...
Bs2 • 8 required, not supplied 6 volt dc power transformer optional line level audio source (such as a tape deck or cd player) shielded stereo audio cables speaker case and knob parts top cover bottom base tray 4 - short phillips head screws 2 - long phillips screws front and rear plastic panels wit...
Bs2 • 9 bs2c parts layout diagram.
Bs2 • 10 ramsey "learn-as-you-build" assembly strategy as you can see in examining the circuit board and components, there is a bit more to this voice recorder kit than just soldering a few parts. So that you don't spend extra time "troubleshooting" instead of enjoying your new kit, we strongly reco...
Bs2 • 11 since you may appreciate some “warm-up” soldering practice as well as a chance to put some “landmarks” on the pc board, we’ll first install some of the larger components. Have a look at the parts layout diagram to help with your assembly. We’ll start with the larger pc board and work our wa...
Bs2 • 12 which means that it must be installed in the proper orientation to work correctly. You’ll note that there’s a stripe or band at one end of the part and a band marked on the pc board silkscreen and parts layout diagram. Align the two bands and solder the diode in place. 9. Install c3, 470uf ...
Bs2 • 13 those last few parts are the power supply section of our kit, taking the raw dc input to the kit and smoothing it out for all the circuits. Ready to move on? 13. Install r3, 10k ohms (brown-black-orange). Resistors can be installed in either direction but your kit will look better if you ha...
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Bs2 • 16 29. Install c16, 10uf electrolytic cap. Yes, watch the polarity again. 30. Install r27, 10k ohms (brown-black-orange). 31. Install r14, 2.2k ohms (red-red-red). 32. Install r11, another 2.2k ohm resistor (red-red-red). 33. Install r16, 2.2k ohms (red-red-red). It’s hiding between the mic an...
Bs2 • 17 47. Install r19, 10k ohms (brown-black-orange). 48. Install r15, 330 ohms (orange-orange-brown). 49. Install r20, 21, and 22, all 10k ohms (brown-black-orange). 50. Now we’ll move to the other end of the pc board. Install c6, 10uf electrolytic capacitor. Watch orientation! 51. Install r6, t...
Bs2 • 18 flat side on the part. Line these flat sides up and the diodes will be installed correctly. If installed backwards they will never light. Install d6, the red led, by correctly orienting the flat side on the part with the flat side shown on the pc board silkscreen and parts layout diagram. L...
Bs2 • 19 • solder shorts between components. Check your schematic and parts layout diagrams if you suspect a fault. • proper orientation of diodes, capacitors, and ics. • ensure proper power supply polarity and voltage (5 to 12 volts dc, center positive) all finished checking your kit over? I went a...
Bs2 • 20 be flush and square. Once you have things where you want them, take your soldering iron and tack solder the two outside pins of the two outside 8 pin headers to hold the whole thing in place. 70. Now is the time to check your led placement, while the header solder joints cool and before you...
Bs2 • 21 using the bs2c recorder layout the bs2c’s memory is laid out like a timeline, and the bs2c software can jump to any absolute position within that line. You can think of it like a piece of tape laid out in a long strip. It is then divided into eight equal pieces that mark the start point for...
Bs2 • 22 to change the sample rate of the bs2c, power it down, then press and hold the pause button while powering the unit on. The display will show three dashes to indicate sample rate selection. Now press the up down keys to select from one of four sample rates. When finished, press the stop butt...
Bs2 • 23 button first and then try to select the location you’ll see letters on the display. The letters indicate the volume level, as explained in the next section. Be sure to select the location first before hitting play. Now it does get a little more complex if you want to replay the same message...
Bs2 • 24 the highest, l being the lowest. When you change the volume setting, always hit play to lock the setting in. If not, it will default to a preset volume level. Lock mode to enable the lock down mode requires a bit of finesse. You have to press all three buttons, up, down, and stop, at the sa...
Bs2 • 25 case up instructions: the enclosure is a key element to the overall pride you will have upon com- pleting your ramsey kit. The enclosure will show how you were able to “build from scratch” a commercial piece of high-tech electronics. For some of us, the enclosure will also hide a number of ...
Bs2 • 26 troubleshooting won’t record from microphone and/or line in. 1. Check to make sure you have the proper recording mode selected. The decimal point on the numeric display indicates the mode. If in microphone mode, the led is off. If in line-record mode, the led is on. Check your source and be...
Bs2 • 27 the ramsey kit warranty please read carefully before calling or writing in about your kit. Most problems can be solved without contacting the factory. Notice that this is not a "fine print" warranty. We want you to understand your rights and ours too! All ramsey kits will work if assembled ...
Bs2 • 28 price: $5.00 ramsey publication no. Mbs2c assembly and instruction manual for: ramsey model no. Bs2c ramsey electronics, inc. 590 fishers station drive victor, new york 14564 phone (585) 924-4560 fax (585) 924-4555 www.Ramseykits.Com required tools • soldering iron (wlc100) • thin rosin cor...
