4 man boat £21
£9 tent
6v 100AH £28ea
January 1999 special offers
We have put together a page of discounted items for you, these items have not been reduced before so take advantage of these bargains today!
Make your own two way mirrors with our simple diy home construction kit.
Save 5 uk pounds
Each two way mirror kit contains enough material to make any size mirror up to 20" x 90" 500x2200mm (or lots all small ones) in addition to the kit you will need basic household tools, a piece of glass the same size as the proposed two way mirror(s) and some soap.
Once completed the two way mirror will look like a perfectly normal mirror from one side but you will be able to see straight through it from the other side!
Each two way mirror kit is supplied with full instructions but we do suggest you practice on a few smaller pieces of glass until you get the hang of it!
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Clinically proven to clean
better
than a manual toothbrush
Braun oral-B Ultra plaque remover
Save 5 uk pounds
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The principal cause of caries and gingivitis is plaque, which is a nearly invisible layer of plaque bacteria which sticks to the teeth. Over time, if plaque is not removed properly daily, these plaque bacteria attack the teeth and gums, leading to gingivitis or even periodontitis. That is why it is so important to brush your teeth daily. Braun Oral-B Ultra plaque remover has a cup-shaped brushhead which surrounds each tooth, cleaning it deeply and thoroughly. The green Interdental Tips on both sides of the bristlefield penetrate deeper between the teeth, cleaning even the hard-to-reach areas easily. Used daily, the colour of the INDICATOR bristles will wear off to about halfway, signaling the time to replace your brushhead. At 7,600 movements per minute, the oscillating brushing action of the brushhead sweeps the plaque away, leaving your teeth feeling clean and fresh. Recommended by more dentists worldwide than any other electric brand, it is no wonder that Braun Oral-B is the number one selling electric plaque remover brand in the world |
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PIR with built in video camera and infra red strobe light
TVXPLUS UNIT PLUS03
Save 10 uk pounds
click to enlarge images
These units are brand new modules designed to take 'pictures' of intruders and then transmit the pictures down the telephone line. The PIR detects the intruder, fires the strobe light this ensures a perfect picture even in total darkness. The picture is stored in memory inside the module and then sent by modem (not included) down the telephone line. The units also have a nicad battery pack included presumably to maintain operation in the event of mains power failure. Output from the camera is standard b/w composite 320x240 pixels with a 90x65 degree field of view, the picture quality is excellent.Each PIR also contains a video capture and compression unit.The infra red strobe has a range of 15m.The pir has a range of 12m.Power requirements are 12v dc 400mA. Power supplies available at £5 ref SS80The units are supplied with connection details etc but we do not have any information on using the compression and capture unit or interfacing to modems etc.The units do have operational PIR's, strobes and camera's (camera is 12vdc and gives out standard composite 1v p-p video) how you adapt these to work together is entirely up to you!Retail price for the units was in excess of £200 eachOur bargain price just £49.95 while stocks last! sale price £39.95ref SS81Power supplies £5 ref SS80
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Video Sender Kit
Save 10 uk pounds
Just in are these new video sender kits, please note that it is not illegal to own or build but once completed it may well be illegal to own one.
Click
image to enlarge details
A/V SENDER KIT
This kit provides you with wireless audio and visual transmission to a TV. The TV acts as a receiver, eliminating the need to buy a separate monitor. You can also hook it up to a VCR or a CCD Camera, and even set up a remote CCTV security system!
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Circuit Analysis:
Q3 VC 1 ~ C 13, C 16 and 13 all make up a colpitts oscillator circuit that fluctuates from 22O~25O MHz. You can regulate the frequency to any value within this threshold by tuning VC I or 13. C 13 modulates the signal rate. When the capacitance increases, so does the modulation. R9 and C 16 bias the local oscillation. If we lower R9’s frequency to 68OR the oscillator’s output level will increase.
Q2 and L2 act as a frequency doubler. C7, along with FCZ783R5 (IF Trans former), the Q4 transistor, C14, C19 and R12 all make up the mixer. This mixer takes both audio and visual signals together and "mix" them into one and passes through RF Amplifier Q I to transmit the signal to the antenna.
Testing:
1: Turning the blue component’s trimmer on VC 1 varies the frequency. When we turn the trimmer, the television’s channel has to be changed accordingly. It is easier to tune the A/V Sender if you have a spectrum analyser to help you find the correct frequencies. If the frequency is tuned to 474 MHz, then this would be the equivalent of your TV’s channel 14 UHF band.
2: The IF Transformer Is used to synchronise the audio and video frequency’s level ratio. If the TV’s image is too blurry then you can adjust the IFT to fine-tune the image.
3: SVR1 controls the video signal input ratio~ while SVR2 controls the audio portion. You can tune these components according to your needs.
Parts List:
Resistors 5% 1/8W
68R R1
4.3K R2
1K R3.R9,R15
6.8K R4,R7
2.2K " R5
560 R6
5.6K R8
470 R1O,R12
270K " R11
100 R13
10K R14,R17
1M R16
Capacitors:
2P (NPO) 2.54mm Cl, C2
22P (NPO) C3
103 C4,C8,C17
102 C9, C10, C15, C20
104 C21
3P (NPO) C11
12P (NPO) C6
470P C23
5P (NPO) C7,C13
47P (NPO) C16.C19
lOOP (NPO) C14,C18
220uF/16V (6Xllmm) CS
4.7uF/16V(4x7mm) C12, C22
lOuF/16V C24
Transistors:
2SC2369 or 2SC3358 Q1
2SC1674 Q2,Q3
2SC945 Q4, QS
Diodes:
Zener 11V/, 1/4W Dl
5V, D2(or 5.1V)
3V, D3(or 5.1V)
60-2
SVR1 1K/6mm (3 pin) SVR2 1OK/6mm(3 pin)
VCl / SP/ 6mm(2 pin)
LI d=3mm D=4mm O.7mm, 2T
.L2,L3 3T
End of parts list
Click
image to enlarge circuit diagram
Click image to enlarge
pcb layout
Complete kit excluding aerial and psu but including all components,
PCB and a case is
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Bug 2
Save 10 uk pounds
Click to enlarge
A more specialised transmitting radio bug that is only 25x20mm yet will transmit up to 500 metres and will run for several days on one battery. Surface mount components are used on the other side of the pcb. Again receivable on a FM radio.
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Save 5 uk pounds
Click image to enlarge
Bug 1
A small basic bug ( radio transmitter) that can be hidden anywhere to discretely monitor conversations! Operates on a 9v PP3 battery, supplied complete with battery connector etc. and has a transmitting range of about 100 metres. 45x16mm The transmissions can be picked up with a reasonable FM radio.
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