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
A judge in the Massachusetts Land Court has ruled that the Zoning Board of Appeals in the City of Framingham “erred” in revoking a building permit for... Read more
Jim Heath W6LG shows what happened to RG8X that had 1500 applied. Watch the subsequent episodes for more information about coax. Read more
Audio and visual of Cuba jamming 40M, making it to OH Audio and visual of Cuba jamming 40M, making it to OH. #hamradio pic.twitter.com/J4wHLPMGhF — Ha... Read more
July 2021: Brabant Wallon’s Emergency Radio Network volunteers stepped in when the Police building in Wavre, Belgium – including its Tetra anten... Read more
by Matthew Gault The federal government is investigating mysterious signals coming from Havana that are jamming popular frequencies. HAM radio operato... Read more
“ On January 1, 2022 I will be retiring. I’ll be nearly 76 and want to spend more time at other things. EZNEC is and always has been devel... Read more
AMSAT’s Engineering and Operations Teams have announced that AO-109 (RadFxSat-2/AMSAT Fox-1E) is now open for amateur use. AMSAT advises operators to... Read more
Look what arrived at my mailbox! This is the Icom ID-52E, the newest Handheld Ham Radio from Icom, which includes DSTAR. Let’s take a look at th... Read more
International Amateur Radio Union (IARU) Region 1 Emergency Communications Coordinator Greg Mossop, G0DUB, reported over the weekend that amateur radi... Read more
Solar Storm Fake Out & Big Flare Players Near | Read more
Radioddity has a new Mini Mobile DMR Radio about to be released which they are calling the DB-25-D. This is a small dual band DMR radio with 20W power... Read more
“An HP model 3200B VHF Oscillator and ENI model 5100-L NMR RF Broadband Power Amplifier provide a 300 MHz signal to a half-wave dipole antenna.... Read more
“For almost a week straight there has been an abundance of what looks like intentional radio interference on 40 meters HF ham radio. Is this the... Read more
“Here we take a look at the Mini600 Antenna Analyzer with EU1KY Firmware Version 1.04” Main Functions : Panoramic scan Measurement Generat... Read more
The June 2021 activity report of the Volunteer Monitor (VM) Program has been released. The VM Program is a joint initiative between the ARRL and FCC t... Read more
“I’ve had my DX Commander All Band vertical in the air for about 6 months now and I wanted to show how the antenna has faired over the Aus... Read more