Firmware upgrade chips for the Ultimate-series kits. You can read the version history in the product detail page for each chip.

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1.00e QCX upgrade
Chip for the QCX CW Transceiver kit, version 1.00e. This is an ATmega328 chip. Version history: p..
c1.01 upgrade
Chip for the Clock kit, c1.01. This is the ATmega328 chip. Version history: please see http://www..
ProgRock chip
ProgRock upgrade chip for the ProgRock kit. Firmware version pr1.01a. See ProgRock kit page for furt..
RC1 Raised Cosine Keyer chip
Raised Cosine Key Shaper chip that can be used with the 5W HF PA kit to make a standalone PA with ra..
s1.04 upgrade
Chip for the VFO/SigGen kit, firmware version s1.04. This is a programmed ATmega328 chip. Ve..
v1.09 upgrade
Chip for the Ultimate QRSS kit, v1.09. Note that the Ultimate QRSS kit is now retired and replace..
v2.07 upgrade
Chip for the Ultimate2 QRSS kit, v2.07. (Note: now includes the functionality of the v2.03k version)..
v3.09f upgrade
Chip for the Ultimate3/3S QRSS kit, v3.09f. This is the ATmega328 chip. Note that this is the chi..
v3.12a upgrade
Chip for the Ultimate3S QRSS/WSPR kit, v3.12a. This is the ATmega328 chip. Note that this is the ..
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