Vfo Ne602

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VFO's With the NE602. A stable VFO is one of those homebrew projects that always seems to give the most trouble. It's my opinion that the NE602 may have been overlooked as ...

The circuit shows a typical Colpitts based VFO using an NE602 (or NE612) mixer. The values below use Toko standard inductors to achieve a VFO for ...

NE602 (1/1) Paul: The NE602 or NE612 can be configured as a VFO, so a simple qrp transceiver can be created with a sinle NE602 chip, acting as a mixer/oscillator on ...

RF down to the I.F. frequency of 4.0 Mhz., another to heterodyne the 4.0 MHz. I.F. down to audio, and another to heterodyne the VFO frequency of 3.0 MHz. up to 7 MHz ...

I could also just use an NE602 VFO at 50MHz but I'm concerned about stability here. I could use a DDS kit but that brings its own set of difficulties and so I don't want ...

With a product detector, the input signal is mixed with a VFO signal close to the ... This design can be improved by adding a RF gain control, substituting the SA/NE602 ...

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This crystal mixer VFO uses the internal oscillator of an NE602 on 5 to 5.5Mhz to mix with 2 Xtals to produce a signal on three bands.

NE602 VFO Oscillator - It's my opinion that the NE602 may have been overlooked as one of the most stable VFO oscillators around.

10_M_DSB_QRP_TRANSMITTER_WITH_VFO. Published:2009-6-18 4:48:00 Author:May | From:SeekIC. NE602 request for quotation Click here to send inquiry . You can post buying ...

... circuits are built in three sections on the circuit board, namely TX, RX, and VFO. ... as a speech amplifier which in turn drives the balanced modulator a Signetics NE602 ...

The 455kHz IF is mixed with the VFO (~ 2.5MHz) to the transmit frequency by another NE602. Careful LC filtering takes care of the image around 2.8 MHz.

The PTO VFO is in the middle and upper middle of the main board. The buffer the ... Most homebrew stuff you see on the Internet uses the NE602. A great chip, but recently ...

This VFO is probably the most stable FET circuit out there ... circuit is very easy to design for any frequency (see NE602 Front End) and uses fewer parts than the FET VFO.

Took a good look at the NE602 wiring, and discovered that I had accidentally wired the ... A 0-60 MHz coverage DDS VFO with built-in amplifier and variable output ...

Discussion Here is another simple, popcorn receiver that uses a NE602 (or a SA612 or NE612) as the product detector. Note the two IC's in Figure 4 are drawn pins ...

The NE602 or NE612 can be configured as a VFO, so a simple qrp transceiver can be created with a sinle NE602 chip, acting as a mixer/oscillator on recieve and a vfo ...

VFO from it (the parts on the NE602's pin 6 ... After replacing the VFO's NE602 I got a change in sound but still got no 20 meter ...

In addition, we utilized the NE602's internal oscillator in a varactor-tuned Colpitts VFO circuit. We've had experience with this before, and have found the NE602 ...