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Ceramic Resonator Regenerative Transmitter - Receiver for 7 MHz CW

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Building on the ceramic resonator regenerative receiver recently described this transmitter-receiver uses a 7.160 MHz ceramic resonator in a companion QRP CW transmitter. Housed in the same box as the receiver it allows operation in the bottom 60 kHz of the 7 MHz CW segment.
Note: At 2:26 there is some text in the diagram which may be unclear around the choke in the collector of the BD139. The text reads ‘3 turns choke FB’. It’s 3 turns on a 6 hole ferrite bead.
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Опубликовано:

23 авг 2024

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Комментарии : 21

@randyab9go188 7 лет назад

Anyone who has a cat in their video has to be supported.

@jimmyjonsson2871 6 лет назад

Nice little rig! I know because I recently build it. The audio was to low for me, so I build in a small 386-amp. Missing a sidetone when keying, so a simple one-tr osc is inside. The RX is easely overloaded at evenings, so I put in a switch with an 18 ohm Attenuator, when needed. I was getting over 0.8 Watt at 12 VDC, and over 1 Watt at 15 VDC. An PSU-power box from an old computer is a good idea if You have. An very good building- info how to build this station can be find in SPRAT magazine #174 Spring 2018. Can be recommended by me, it is a small nice QRP box. SM2BYW. Jimmy

@Andre-PY4DR 8 лет назад

Very good job Peter... you seem like a very talented guy!! congratulations!!

@tonystephen6312 5 лет назад

You could call it the - PURRFECT 40!

@tonystephen6312 5 лет назад

Long live c.w. and regens!

@RazorRadios 8 лет назад

Excellent work Peter!

@raafatalheety826 7 лет назад

Nice video 73

@neiltan1939 8 лет назад

I just watched this today. Saw you video about the receiver alone yesterday. Thanks again for an excellent project and youtube video. 72 de wa4chq, Neil

@raafatalheety826 8 лет назад

Thanks for you 73 from baghdad yi1hxh. can you ssb trx the same regenerative received with dsb transmit.

@jimmyjonsson2871 5 лет назад

Look at www.sk2au.org There You find an small article around this station.

@cx5fk 4 года назад

Nice CAT 73

@ksushchyk Год назад

The regenerative receiver already contains a generator, I wonder if is it possible to turn it into a simple transceiver using the same coil for tuning both to receive and transmit?

@Andre-PY4DR 8 лет назад

I just didnt understand exactly how the spot button works... if you could please explain?! That'd be nice !!

@Dazzwidd 8 лет назад

All it does is run the transmitter oscillator and buffer stage for as long as you hold it in so you can listen to the transmitter frequency in the transceivers earpiece, enabling you to set the heterodyne correctly.