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Vfo ne602

VFO Circuits - PAN-TEX.NET: Home Page

The output from the VFO NE602 is very low. The MMIC amplifier lifts the signal level enough to pass through the bandpass filter in good shape.

pan-tex.net
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VFO Circuit

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 ...

pan-tex.net
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GQRP Club - PRACTICAL VFO VALUES - Welcome to the web pages of the ...

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 ...

interalia.plus.com
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NE602 - eHam.net Home - Amateur Radio (Ham Radio) Community Site

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 ...

eham.net
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NE602/NE612 info

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 ...

qsl.net
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AN1983 Crystal oscillators and frequency multipliers using the ...

construct using the NE602 in a VFO configuration. Butler circuits have been built and repeated with good results for crystal oscillators up to the 7th overtone using the ...

stanford.edu
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6 Meter VFO - Which Technique? - QRZ Forums

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 ...

forums.qrz.com
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Direct Conversion Receiver.

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 ...

qsl.net
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Oscillators

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.

qsl.net
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Variable-Frequency Oscillartors (VFO) - Electronic Circuits - Free ...

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

discovercircuits.com
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10_M_DSB_QRP_TRANSMITTER_WITH_VFO - Communication_Circuit ...

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 ...

seekic.com
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Wee Willy - QRP Homebuilder

... 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 ...

qrp.pops.net
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A Top Band Transceiver

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.

cumbriadesigns.co.uk
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Alan Yates' Laboratory - Small 80m direct conversion RX

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 ...

vk2zay.net
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VFO - Factbites

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.

factbites.com
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KL7GQ Home Brew HF SSB Transceiver

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 ...

kl7gq.com
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PN-Junction Tuned VFO Supplemental Page - QRP Homebuilder

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 ...

qrp.pops.net
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NE602 - eHam.net Home - Amateur Radio (Ham Radio) Community Site

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 ...

eham.net
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NE602 RXes - rec.radio.amateur.misc | Google Groups

L/C Band---NE602 Mixer---Cohn Xtal---MC1350---NE602 Prod.Det.---LM386 AF Amp. Pass Fil. | Filter IF Amp. | VFO ...

groups.google.com
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ne602 - Double-balanced mixer and oscillator

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 ...

epcity.com
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N5ESE's IN3 DC-RX - N5ESE Ham Radio (20110623)

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 ...

n5ese.com
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NOGA QRP - Projects

Also the ARRL Handbook says that the NE602 (similar to the NE612, but not the ... performed in the VXO, I decided to try it as part of the tuned circuit in a VFO.

nogaqrp.org
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Build a 5 watt, 80 meter QRP CW Transceiver!!!

The NE602's receive their 8 volts from regulator VR1 which is listed in the VFO schematic. An IF amplifier was not used in this circuit because the NE602's have a lot ...

rason.org
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py2ohh.w2c.com.br

Plan1 Varicap NE602 ta7358 LPF VFO DIGITE A FREQUENCIA DE COBERTURA DO VFO em MHz min max. DIGITE O VALOR DO CAPACITOR VARIAVEL C9 EM pF F min F max XL=XC media

py2ohh.w2c.com.br
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tcvrs2.htm - Far Circuits

The receiver section is built around two NE602s, one MC1350, MPF102 VFO, with a LM386 audio output. The Transmitter has NE602 and four transistors with a 2SC799 final and ...

farcircuits.net
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AmQRP Tin Ear Receiver by NB6M - The American QRP Club

This receiver has a stable VFO, and is quite pleasant and fun to operate. ... It is also not the usual NE602/LM386 integrated circuit type of receiver that we are ...

amqrp.org
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NorCal 20 Transceiver - The American QRP Club

... Mixer for the front end (designed for the harshest European conditions) NOT another NE602 front end. Variable output power from 0 - 5 Watts; VFO ...

amqrp.org
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40 m Band Receiver without ICs - QRP and homebrew by DL2YEO

Mixer ICs like the NE602/612, ceramic filters SFE7.02, RF power transistors up to 5W ... It amounts to Ub/2 if the VFO frequency corresponds to the resonant frequency of the ...

qrp4u.de
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Documentation For Printing

Using a general coverage receiver or a frequency counter, check for correct frequency and oscillation of the VFO (pin 7 - NE602). Check the windings of the input toroid.

qsl.net
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HOMEBREW 40M SSB/CW TRANSCEIVER homebrew ssb transmitter homebrew ...

The amplified signals are then applied through the 1ST NE602 double balanced mixer and the variable VFO signal is injected into the mixer. The wanted IF output signal ...

gameangler.eu
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home.frognet.net

the filters coming out of the TX VFO Mixer NE602, before the Q7 buffer. Adjust for peak output on RF meter. While peak on L7 may seem a bit

home.frognet.net
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NE602 AM balanced modulator? - The AM Forum - Index

Anyway, that's an interesting approach to use the NE602 as a direct 75M VFO/modulator. As Steve says, you will probably have enuff bandwidth to do it .

amfone.net
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HF to LF Transmit Converter

... was operated in a linear mode and it was only a matter of replacing the VFO with ... The conversion takes place in V1 (type NE602). The V1 circuit is almost identical to ...

users.tpg.com.au
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WA6KYO Homebrew Transmitter Receiver Ham Shack QRP Vintage

Simple 40 Meter DC Receiver with NE602 Mixer, MPF-102 VFO, Low Pass and Variable Audio Filters. I have received a number of inquiries about the ...

electronicsusa.com
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Signal Generator (VFO) with Direct Digital Synthesis

DDS VFO with PIC16F84 and AD9850 by George Heron, N2APB . Here's a wonderfully-simple project first done by Curtis Preuss, WB2V in the July '97 issue of QEX.

qsl.net
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The Tenbox - a Simple Sideband 10m Transceiver - G3XBM

Current plan is a 32MHz crystal mixed with a 3.4-3.6MHz VFO although I may go for a 14MHz super-VXO and doubler. The receiver. NE602 would be easiest but I am half tempted ...

sites.google.com
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