Gerard's Gerard JamPiet

581
Item nr.

Gerard JamPiet AM set

Improved Jampot design.

**Data for Gerard JamPiet**
Production	The Netherlands, 2023. Price was ca 2 euro.
Bands	MW.
Semi- conductors	TA7642 (tuner IC), BC337 (amp).
Cabinet	Glass jar. Size Height 14cm.
Power	Batt 1,5V C-cell.
Documents	Schema of Pina Colada.

The Design

The Jampot Ontvanger (Marmelade Jar Receiver) was a well known low cost design of a crystal receiver from the nineteen fifties. There was even an improved version that had an additional transistor amplifier. Main disadvantage of the crystal design is the need for a long aerial and ground; also, only earpiece listening is possible.

Building an AM set with the TA7642 IC is hardly more difficult or more work than building a crystal set, no antanna is required, and reception is a lot better, even with the current lack of strong MW stations.

Obtained	5/2023 from Homebrew.
Condition	7.
Disposed	Storage (inquire if interested to buy).

This Object

Most TA7642 designs use a ferrite rod antenna, like for example the famous Kid's Radio and the Pina Colada. In his book, Piet writes that air coils can have a much higher Q factor (and that he likes tosti with peanut sauce a lot). This book inspired a TA7642 design with an air coil, built in a peanut butter jar.

Part of Gerard's Radio Corner.
Generated by SiteBuilder on 26/2/2024 by Gerard (g.tel@uu.nl)