SX-2000 QRP HF transceiver
“”I had in mind for a long time to realize an HF transceiver complete with all the functions of a commercial apparatus. Unfortunately, the time available and not ‘how much and instead of my usual carry the usual “simple” QRP x complicate life so I decided to go overboard with this fantastic new project.
The first phase ‘was to design homes with all the dimensions are then passed to the VFO and that ‘an apparatus for the TOP homebuilt. Everything is’ run by a powerful micro ARM 32bit associated with a Touch Screen. All the apparatus and ‘managed via Touch Screen and in the future’ will also be a FFT band style IC-7800.
The project and needless to say ‘very ambitious so I’m working with my friend IZ7JXJ specialist equipment QRP transceiver has achieved excellent x 70MHz and multiband hf so we’re a good hands . I’ll take care ‘of all the various digital and design while him across the analog part. VFO and ‘very complex and will be implemented once x time x other features now let’s start with the fundamentals – Dual VFO A / B – Split, Rit – Meter and digital Smeter – Keyboard Touch screen – Dual managing all parameters and this’ first draft of the monster
“Then x VFO knob position, and ‘almost inevitable due to lack of space on the front but it did not’ yet final so let’s see what I can come up. I’m coming back to us by completing the VFO and this’ first prototype.
I managed to contain the entire circuit which includes: – Micro 32bit – Touch Screen IC – IC USB port in a really small PCB that lies behind all the color display 3.2. Obviously a lot of work to design a single-sided PCB that contains more ‘than 100 runs three 0.25mm smd integrated. At the end the result is’ everything works great ……. I had some trouble with the touch screen and the realization of the PCB strictly HOME MADE but the end result has paid off.
This’ very first prototype to test the logic and develop the software. Next step and ‘all interfacing to the QRP that I imagine on a single I2C bus. Among DDS, filter and switching board there will be a hundred different I / O pins so everything must be designed with a certain criteria. The philosophy and ‘minimize the components simplify installation and rely 100% on a high-tech device of the latest generation.
attach some pictures. The first and ‘how will’ on the radio and the second ‘part of the logic of the third and VFO’ VFO combined with a QRP IZ7JXJ made by a guru of QRP . With a minimum of wiring would already ‘ready a small tri-band. His QRP includes everything 10x16cm namely: – IF – BFO – Filter Board RX & TX – AGC – Final 5Watt Currently the three bands are 10/15/20mt but can be added to other bands at will. the analog part and ‘was carried out on double-sided PCBs and is’ a mix between SMD and conventional components x facilitate mounting. Returning to the VFO and ‘was also implemented a USB port x interface the radio to the PC using an emulation YAESU CAT compatible with the standard, so use hamradio deluxe or similar programs.
73 ‘ Antonio IZ7LDG
Photos – Click to enlarge
Devin, KM4ENW, asks how to ground his 2m/70cm radio in his RV. I show how to use the frame of the RV as a good counterpoise. Read more
A 5-year, $9.3 million National Science Foundation (NSF) grant will allow the University of Alaska Fairbanks (UAF) Geophysical Institute to establish... Read more
https://youtu.be/Tti4AZUa458 Read more
Donald de Riggs, J88CD, on the Caribbean island of St. Vincent, says that on April 13, the 42nd anniversary of the 1979 eruption of the La Soufriere v... Read more
The FCC has announced that rule changes detailed in a lengthy 2019 Report and Order governing RF exposure standards go into effect on May 3, 2021. The... Read more
Here we take a look at the brand new L-Band Patch antenna from RTL-SDR Blog. This antenna is designed to work with Inmarsat, Iridium and GPS signals. Read more
Comparing the Elecraft KX2 and the Icom IC-705. Which should I buy? Read more
Frank Howell, K4FMH, followed up his two-part National Contest Journal (NCJ) series, “The Demographics of Contesting,” with a post to his Social Circu... Read more
Nick, KC3PWJ, has a flagpole and also a pole that holds up his VHF/UHF discone. He’d like to string a 20m dipole between the two poles, but is w... Read more
Radio amateurs are invited to take part in the MARS exercise now under way until April 10 in support of the US Department of Defense. The five USB cha... Read more
New from Yaesu, the FTDX-10 HF Transceiver – today I’ve invited Sean, W9FFF, from the Ham Radio Dude channel to go though all of the menu... Read more
Renewing Your Amateur Radio License thru FCC Universal Licensing System Read more
A New Sunspot & More Aurora while A Mars Helicopter Preps for Flight | Space Weather News 04.05.2021
A New Sunspot & More Aurora while A Mars Helicopter Preps for Flight | Space Weather News 04.05.2021 Read more
Today we are checking out the NanoVNA-H4 analyzer. This little gem does a lot more than just SWR, so check out this video and other videos on YouTube... Read more
Roger Nielsen, K7PUG, is having trouble with his Elecraft K3 after a factory reset. Everything sounds garbled and won’t tune in. Let’s tro... Read more
Here we take a look and test the KN-990 SDR All mode HF Transceiver. This radio is well built and includes an IF DSP for great sounding audio. KN-990... Read more
How to use an automatic antenna tuner with the Yaesu FT-891. In this video I show you the steps to set up and configure the LDG Z11 Pro II auto tuner... Read more