Showing posts with label NE602. Show all posts
Showing posts with label NE602. Show all posts
Saturday, January 4, 2025

Donnie WA9TGT's Direct Conversion Receivers

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Donnie WA9TGT writes:  I recently built my first basic 40 meter (DC receiver) from  http://www.qrpkits.com/    that uses the common SA602 ...
Thursday, April 4, 2024

MXM SupeRX/TX 40 Rig Info

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  My SupeRX/TX 40 -- now on 7030 kHz Click on schematics for a better view Details on the receiver:  https://archive.org/details/73-magazine...
6 comments:
Friday, March 29, 2024

A QRP CW Contact (Video) with the Winterfest MXM SupeRX/TX 40 (1 Watt, Crystal Controlled Transmitter)

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I picked this transceiver up at Winterfest for one dollar. 40 meters. Superhet receiver with 455 kc ceramic filter and 2 NE602s. Crystal ...
5 comments:
Thursday, February 15, 2024

More Inspiring Mail! Another "First Ever Receiver was Homebrew"

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Frank's Lowfer Beacon Receiver It was great to hear from someone else who, like Scott KQ4AOP, heard his very first signals on a homebrew...
2 comments:
Wednesday, December 1, 2021

KI4IO in India and Nepal, and Discrete Homebrew Gilbert Cells

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Jerry KI4IO is such an amazing homebrewer that he has been dubbed "The Wizard of Warrenton."  The picture above shows Jerry durin...
Tuesday, November 30, 2021

Putting a Barebones Superhet on 17 Meters with an NE602 Converter (Video)

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Armed now with a NanoVNA, I took a look at the passband of the 5 MHz filter in my Barebones Superhet (BBRX)  W4OP built it on a Circuit Boar...
Sunday, November 28, 2021

How To Understand the NE-602 and the Gilbert Cell Mixer

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  I think the key to understanding the Gilbert Cell Double Balanced mixer is to separate out the three tasks that this device completes, and...
7 comments:
Tuesday, July 28, 2020

A 75 Meter AM Quarantine Converter for the Q-31 Receiver (video)

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A while back Fred KC5RT sent me a nice collection of parts, including some 6 MHz crystals.  I had been thinking of making a converter to p...
Sunday, July 2, 2017

AC9JQ's Mini Digi VFO/BFO Al Fresco with OLED (and noise test)

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From Dean AC9JQ: Just completed the VFO/BFO/Arduino/OLED module for my radio.  I also have the LPF, BPF and crystal filters completed an...
2 comments:
Saturday, June 17, 2017

SolderSmoke Podcast #197: Farhan, Fame, 'Fest, Testgear, SSB History, Dishal Dystopia, QRP CW, MAILBAG

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SolderSmoke Podcast #197 is available: http://soldersmoke.com/soldersmoke197.mp3 Up in NYC, met Dave W2DAB. got Steve Silverman...
3 comments:
Sunday, June 4, 2017

LTSpice .asc file for the Organic Chip NE602 Rig

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A link to the .asc LTSpice file for the NE602 rig  appears below.   Perhaps some brave soul  more skilled in LTSpice than I am might want to...
3 comments:
Saturday, June 3, 2017

My Organic Chip Rig with an LTSpice Schematic

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CLICK ON IMAGE TO ENLARGE This is a rig that came together through a process of Spontaneous Construction.  It started out with an innoc...
8 comments:
Sunday, April 23, 2017

DiFX! My New NE602 Rig is On the Air

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Pete would call this a DiFX:  a transceiver that is Different from a BITX.  This started with my effort to get an Si5351 working with a l...
11 comments:
Tuesday, October 25, 2016

VK3HN: SOTA, HB, SSB, and QRP FB!

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Peter VK3YE sent me the link to this amazing site.  Wow, Paul VK3HN does great work, both with the homebrew rigs and in describing his wor...
Friday, May 2, 2014

Bert's EMRFD Direct Conversion Receiver

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Very nice Bert.  Sounds great.  I like the pill bottle coil core.  Lew McCoy used them in his designs. I do think that air core coils do p...
2 comments:
Wednesday, June 3, 2009

NA5N on the NE602

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I continue to mine the Gadgeteer News archives. Here is a good one from NA5N. Orignally posted on Gadgeteer news, 2 December 2006 NE60...
3 comments:
Saturday, February 21, 2009

W3JDR 's LTSpice NE602/SA612

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Here's something we've needed for a long time: an LTSpice model for the ever-popular NE602/SA612 chip. Joe Rocci, W3JDR, developed...