Special Web Sale

DVR-4 Voice Message Module.

The DVR-4 is a versatile pc board module, which is designed primarily as a voice recorder and playback module. It is a special version of the general purpose DVR-3 module. The difference is that the DVR-4 is optimized for use in applications other than radio repeaters, where a simple pushbutton control provides recording and playback. A built in microphone allows the recording to be made without the need for external audio sources. It includes a small electret microphone and pushbuttons for record and playback.  You can also install an external switch to trigger playback.  Module normally sells for $99 factory built.  We have a special right now for these in kit form for only $49.  Click here for details on the DVR-4.

A96 Slug-tuned Coils.

5 each 2-1/2 turn and 6-1/2 turn coil as used in our kits.  6-1/2 turn blue coil good for frequencies up to 100 MHz.  2-1/2 turn red coil good for frequencies up to 300 MHz. Stock up for future projects.  Also source of spare tuning slugs for other coils.  Use with A28 alignment tool.  Sorry, shields are not available.   ....$3.00

Super deal: case of 2000 of either type/$20.00 (We have a lot of extras of this part and hope you can use some at a great price.)  Click here.

A33 Capacitor Grab Bag.

Ceramic capacitors with wire leads.  50Vdc rating.  Small values are NP0; large values are bypass type.  Approx. 50 pcs each of 1pf, 18pf, 220pf and approx 100 pcs each of 30pf and .0022uf.   ....$6.00

A34 Resistor Grab Bag.

1/4W, 5%, carbon film resistors with wire leads.   Approx. 50 pcs each of 100ohms, 68k, 150k, 2meg, and approx. 100 each of 470ohms, 680ohms, 6.8k, 27k, 100k, 680k,  3.9meg.   ....$10.00

A35 Super Grab Bag.

If you are a builder, here is a deal you can't overlook!  We offer a grab bag with a generous assortment of many of the small parts shown on this page and even items not shown here.  You will get a variety of parts worth up to $50.  Quantities are limited; so hurry to take advantage of this one-time offer.  Those who work in electronics plants often have opportunities to buy left over parts.  Here's your chance to do the same.  Clearance special, only $10.  Note: contents vary; so not all the parts shown in the photo are available all the time.  In particular, tuning tools, other plastic parts, and screws are gone.

A31 Ferrite Bead.

Prestrung on #22 bus wire. Double-length beads good for vhf and uhf.  .....10/$2

A36 Crystal Sockets.

Oops!  We overbought.  Well, we had to because the mfr had a minimum run to stamp these special parts for us.  Our loss, your gain!  These are the sockets we use on pc boards for crystals to plug into.  They can also be used as handy solder terminals to connect wires to pc boards.  They snap in a 0.070 " dia hole and are then soldered to the board. 

So here's the deal.  If you can use some, we're glad to help out.  Retailing for 10 cents each, we can sell them to you for your projects for $5/100, or if you can use a large qty, just $100 for a reel of 18,000 (that's just a little over 1/2 cent each).

A42 Audio Transformer.

Handy 600:600 ohm audio transformer with center taps.  Can be used for coupling to telephone lines or coupling balanced audio lines to unbalanced.  ....2/$3 (or 10/$8)

A44 Solder-in Feedthrough Capacitor.

.001uF, good for vhf and uhf.  Mount by soldering in 1/8" dia. hole in metal shield or pc board.  Solder #22 bus wire lead in center hole.  Clearance priced at only 10/$5

A47 Transistor Heatsink.

Handy U-shaped heatsink for TO-220 flat pack power transistors and voltage regulator ic's.  Can be mounted on pc board with handy bottom tabs.   Clearance priced at only 3/$1.00 (or 50/$10)

A49 Piston Trimmer Capacitor.

1-11 pF trimmer suitable for adjusting oscillator freq or general vhf/uhf tuned circuits.   Very stable ceramic material.   .....5/$2 (or 30/$10)

A54 RF Choke.

0.33 µH, axial leads, about the size of a 1/2W resistor. Good for vhf circuit decoupling up to 230 MHz.   
......5/$2 (or50/$10)