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Jonathan reviews the EGV+ QRP CW transceiver kit

Many thanks to Jonathan (KN6LFB) who shares the following guest review:


A review of the EGV+ QRP Transceiver Kit

by Jonathan (KN6LFB)

Introduction

The EGV+ is a QRP CW-only transceiver that covers the 40-, 30-, and 20-meter HAM bands.  Designed by Javier Solans, EA3GCY, it is sold in kit form from his website, qrphamradiokits.com.

Javier designed the EGV+ in honor of his friend and co-founder of the EA-QRP Club, Miguel Montilla, EA3EGV.  The first page of the instruction manual dedicates the radio to Miguel with this tribute:

This EGV+ transceiver is probably the kit that I have produced with more care and illusion in my life.  It is a great honor to name this kit “EGV”, the callsign suffix of the late Miguel Montilla, EA3EGV (SK). With no doubt, this is the kind of kit he liked most.  It was my privilege to establish and share with him the first years of the EA-QRP Club. He has always been a referent in my life; when I remember those wonderful years his humbleness, work capacity and generosity are the virtues which shine his image.

How lucky I was to be able to share the path with you, Miguel. Thanks! 

Javier Solans, ea3gcy 

Specifications

  • Frequency Coverage: 40m, 30m, 20m
  • Modes: CW
  • Power Requirements: 12–14VDC, 1–2A transmit, 0.14–0.25A receive. 

Transmitter:

  • RF Output: 5W @ 13.8V
  • Harmonics Output: -45dBc or better below fundamental
  • Other Spurious Signals: -50dBc or better
  • T/R Switching: Relays

Receiver:

  • Type: Superheterodyne.  Balanced mixers.
  • Sensitivity: 0.2uV minimum discernable signal.
  • Selectivity: 3-pole crystal ladder filter, 700Hz nominal bandwidth
  • IF: 4.915MHz
  • AGC: acts on the receive path according to the received audio.
  • Audio Output: 250mW, 4-8 ohms.

Ordering

I purchased my EGV+ kit with the optional enclosure from qrphamradiokits.com.  Javier requests that US customers email him using the contact form on his website for the current pricing in USD prior to ordering.  At the time of my order (February 2022), the cost with the optional enclosure was $203.37.

Assembly

The EGV+ is a single large (180x140mm) PCB, with separate modules for the OLED display, processor, and Si-5351 frequency generator.  All components are through-hole and placed on the top of the PCB.  The kit arrived well packaged and well organized.  There were no missing or mislabeled parts in my kit, which is impressive considering the high number of components.  There are 53 100nF capacitors alone!

The manual contains detailed lists of the components by value/quantity and individually.  One of my favorite features of the manual, and something I wish was more common, is a grid-based layout map of the entire PCB [see above], with the grid position called out in the list of individual components.  This greatly speeds assembly and diagnosis as you can find component positions more easily.

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