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Technical Topics => The RF Workbench => Topic started by: QRP on October 24, 2021, 1327 UTC

Title: EMTX
Post by: QRP on October 24, 2021, 1327 UTC

The EMTX: How to build an 8 component 40/30 meter QRP emergency transmitter

https://swling.com/blog/2021/01/the-emtx-how-to-build-an-8-component-40-30-meter-qrp-emergency-transmitter/

How to build a PC keyer and AM modulator for the EMTX emergency transmitter

https://swling.com/blog/2021/01/how-to-build-a-pc-keyer-and-am-modulator-for-the-emtx-emergency-transmitter/

//QRP

Title: Re: EMTX
Post by: QRP on October 25, 2021, 0737 UTC

Is it possible to replace 2SC2078 with an IRF510
or do these two work in different ways?

Title: Re: EMTX
Post by: Charlie_Dont_Surf on October 25, 2021, 2119 UTC

The 2SC2078 is an NPN BJT. The IRF510 is an N-channel FET. They are not even close to the same thing.

Title: Re: EMTX
Post by: QRP on October 27, 2021, 0749 UTC

Quote from: Charlie_Dont_Surf on October 25, 2021, 2119 UTC

The 2SC2078 is an NPN BJT. The IRF510 is an N-channel FET. They are not even close to the same thing.

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