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
The Enhanced Polar Outflow Probe (e-POP) onboard the Canadian CAScade Smallsat and Ionospheric Polar Explorer (CASSIOPE) satellite will again s... Read more
For years InnovAntennas co-owner Bill AA7XT pestered his InnovAntennas business partner Justin G0KSC to design an antenna that would cover 20 t... Read more
Tim Allen – Ham Radio “Last Man Standing” debuted its seventh season on Fox Friday night, with the Tim Allen-led sitcom rocketing past its... Read more
The Maui Amateur Radio Club recently honored Mel Fukunaga, KH6Y, for his long-term dedication to amateur radio licensing on Maui. The Federal Communic... Read more
The MK-4 Series of masts are, by far, our most portable masts for many reasons. The masts are light weight and short enough, when fully collapsed, to... Read more
Most encyclopedias say that the first transatlantic television transmissions took place via the Telstar I satellite in 1962, but TV images actu... Read more
Batteries with Bioenno Power, ethics in contesting, show us your Radio Shack receipts, the Pine Board High Voltage Power Supply, and Amanda interviews... Read more
ANTENNA ANALYZER MetroVna Pro Touch 55/180/250 MHz The idea of creating an all-Italian version of an Antenna Analyser was born as a challenge.After co... Read more
Amateur Radio volunteers are urgently needed to assist with communications during the National Alliance on Mental Illness (NAMI) Walkon Saturday, May... Read more