[SGVHAK] arduino based 20m/40m morse code radio

[Stan Slonkosky]

This was reviewed favorably in the August 2014 QST. If anyone doesn't have
access to that, I can send the PDF of the review (which includes two other
unrelated items) as an attachment.

A couple of annoying things about this is that you need to change 5 jumpers
to change bands and that there is no display of frequency. When you turn it
on, it comes up on a specific frequency and you have to manually count LED
flashes as you adjust the tuning dial. It already comes with software to
support an LCD frequency display so all you need do connect one up. One of
the user groups has designed a modification to allow the Uno32 to handle
the band switching.

Apparently someone has been able to modify it so it can run JT65 (requires
a modification to the heat sink; it probably needs to dissipate for heat
for this mode). I read also that some are trying to get it to run PSK 31,
which should be possible.

There is a new model coming, the Patriot 507, that will do SSB and has a
switch to do change bands so you don't need to change a bunch of jumpers. A
prototype was shown in May at the Dayton Hamvention. There is no word on
when it will be available. One guy said he pre-ordered it for $400. I'm not
sure why it costs twice as much. There is a brochure about it at
http://www.cq-amateur-radio.com/dayton_new_products/2014_dayton_new_products/transmitters_transceivers_amplifiers/Ten-Tec%20507%20Patriot%20Flyer%20.pdf
.


On Sun, Aug 10, 2014 at 10:00 PM, James McDuffie <mcduffie at pitfall.org>
wrote:

> Full schematics are available. I bet it could be built for less than the
> $200 retail price. Might be a fun project. I wonder why they couldn't just
> include an Atmega or PIC32 on board.
>
> On August 10, 2014 9:22:09 PM PDT, yoshio <ak209 at lafn.org> wrote:
>>
>> I saw this:
>> http://www.tentec.com/rebel-model-506-open-source-qrp-cw-transceiver/
>>
>> The TEN-TEC Rebel model 506 transceiver is designed with the purpose of
>> providing Ham Radio operators a platform for developing and writing
>> code using the open-source Arduino programming environment. It is a
>> factory built CW QRP radio with a Chip Kit Uno 32 Arduino compatible
>> processing unit that holds the operating program. The radio is provided
>> with programming for basic operating functions that allow it to be used
>> immediately as a basic QRP transceiver. Additional operating functions
>> can be programmed by the user, either by writing the code or
>> copying/adapting code developed by members of a growing  number of
>> Arduino special interest groups. It is this sharing of programming
>> routines and ideas for functionality that is the heart of
>> the Arduino
>> open-source concept.
>>
>> Basic features include a 40 & 20 meter QRP transceiver with internal
>> jumpers to change bands.  Full band coverage on both bands.  Typical
>> power output will run 4-5 watts with 13.5 VDC.  A drift free operation
>> is achieved through DDS synthesizer technology.  CW sidetone through
>> headphones. Three filter bandwidth choices and three tuning rate
>> adjustments included with the stock program.
>>
>>


-- 
Stan Slonkosky
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