NM0S Parts Page

Here's some nifty parts to go with your radio kits and other projects. We have a limited selection very specific to QRP, homebrewing, and vintage radio pursuits. Some of these parts are hard to find, but you can get them here!

Vernier Drive - 1.5" Diameter

This is your opportunity to acquire one of the hard-to-find 1.5" diameter vernier knobs, newly manufactured. While once these were plentiful in radio and electronics stores of the Sputnik era, they, and the stores that carried them, have largely vanished. These though, are highly sought after by crystal radio experimenters and ham radio enthusiasts. Accepting a 1/4" (6.3mm) shaft, this vernier has a smooth 7:1 reduction ratio, and is numbered 0-10. Limited supply on hand. Hardware included.

$17.00 - click to order.

Philips TDA1010A 6W Automotive Audio Amplifier IC - QTY 5

There is no kill like overkill, and if you want some big sound from your QRP radio, this is how you get it. For sale is a lot of 5, Philips TDA1010A Audio Amplifier ICs, in 9 pin SIP package. Fat copper tab for heat sinking. Turn it up to 11.

$5.00 - click to order.

Kev-Flex Stealth Antenna Wire

Kev-Flex is a unique antenna wire manufactured exclusively for NM0S Electronics. The lightweight center core of the wire is made from Kevlar fiber, giving the wire its incredible strength. The Kevlar core is wrapped with six tinned strands of 30 AWG copper. The effective surface of the wire creates an effective skin area capable of handling well over 100W.

To make the core weatherproof it is coated with a UV-resistant black polyethylene sleeve. With a total diameter of only 1/16" (incl. insulation) and a weight of just 16 feet per ounce, the tensile strength 130 lbs allows lengthy unsupported horizontal runs. Kev-Flex is ideal for extremely long LW-antennas and Beverages and is great for balloon or kite-supported antennas. Its low weight and high break-load makes it most suitable for SOTA activations and other field operations.

The outer insulation makes the wire kink-resistant, and its slippery finish makes it ideal for stealth antennas that must be passed through trees or other obstacles without snagging.

This antenna wire is sold in 75 foot long bundles, which is enough for a 40M dipole or EFHW. Two 75 foot bundles would make a great 80M dipole. Custom lengths are available on request.

Specifications

Kevlar fiber core wrapped with six 30 AWG copper strands

Weather-proof black polyethylene (PE) insulation, 1/16" O.D.

Weight: 16 feet per ounce

Breaking-load: 130 lbs

Velocity factor 0.97