This listing is for the Regenerative Receiver that you see in the photos. It comes with 2 plug-in coils. The coverage is from about 530 khz to 1950 khz, for the am broadcast band, plus 5.5 to approximately 17.5 mhz shortwave. Most shortwave activity takes place in this listed spectrum.

The circuit uses a 1C5GT Pentode tube with an NPN transistor audio amp for increased volume. The 1C5 doesn't have the nostalgic steampunk appearance like some of the big audio/RF transmitter tubes that I have on other listings, but will actually outperform many of the them, even though it has low filament current drain (100ma).

You will need a high impedance 2 to 4k ohm headset for this radio (not included). Headphones using piezo elements, like the red ones that you see in the last photo, will also work well if you have them. Again, no headset is included in this listing.   

Aside from the great performance, the best part is that with all battery power, everything is contained within the chassis, so no need for an external power source.

You can get many hours of use with this radio before needing to recharge the batteries (BATTERIES NOT INCLUDED). You'll need a single 26650 3.7 volt li-ion battery for the tube filament and 3 of the 9 volt Li-ion rechargeable types to run the regen detector and audio amp. Some of the earlier versions of this radio used two 9 volt batteries. I later changed the circuit to require 3 batteries, which gives a substantial improvement in both volume and regen action.

I make these to order, so please allow 20 days for shipment once your order has been placed. The green L-shaped chassis is a 3D print, which is similar to a plastic material.

I'm able to copy lots of stations in the early evening and early morning hours, including stations on the amateur radio bands. The fine tuning control will allow you to clarify ssb and cw signals.

You will need a 50 to 100 ft. long wire, or vertical antenna to operate this radio. A good earth ground connection is also necessary for best performance. 

A hand sketched wiring diagram will be provided, along with instructions on where to hook the antenna, power and headphones.

Controls are main and fine tuning, antenna coupling, on/off switch and regen action.

With an adequate antenna, I guarantee this radio will work if you hook it up properly.

Shipping to the US only.