FYI - I used the same approach when designing the Heath SB103
transceiver chassis back in the early 1970's.? With vertical solid
metal separators, we were able to achieve some impressive
isolation between modules.? The only wires were to the rear panel
connectors and front panel controls.? When we were forced into
using tube finals, those had to be wired, of course (we originally
did a totally solid-state final).? Everything else was handled by
the motherboard.? The vertical separators also gave the chassis
rigidity and you could literally jump up and down on the radio
without affecting anything.? It also facilitated the design
process, since we could swap boards in and out, even using an
extender to bring it up above the chassis.? We had a reference
oscillator with 1 ppm/year drift (measured) without using an oven,
also (my design).?
Ron W7HD
On 06/19/2018 06:35 PM, VK3HN wrote:
Several have
explored modules for BiTX/uBiTx.? Paul M0XPD is one:??
ON6RF developed a very nice PCB with all the modules able to be
snapped off, thy had their board on Oshpark or similar, ?
I think modules are a great idea, because I like to swap
variants.? Separate point to point wiring between them should be
avoided because it defeats swappabiilty.? The idea really makes
sense when you think of with a backplane/motherboard? with all
signal and power connections, and pluggable modules separated by
screens where necessary.? 0.1" headers work at HF.? The module
boards can then be vertical.? Surface mount allows them to be
tiny.??
Regarding scratch building Raduinos, I have built 4 or 5, using a
Nano, veroboard or hand drawn PCB, and the Adafruit si5351
breakout.? All of mine are implementations of the Raduino circuit
so I can run any of the community's software.
You might get some ideas here and here :
??
73 Paul VK3HN.?
--
Ron W7HD - NAQCC#7587 OMISS#9898 KX3#6966 LinuxUser#415320
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