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+---- Thread: RF Modulator, L-R header and VI-II shield (/showthread.php?tid=901)
RF Modulator, L-R header and VI-II shield - msharman - 05-04-2022
These few questions may sound obvious, and I apologise if they but I'd appreciate answers.
* The RF modulator. Is it needed, should I fit a de-soldered commodore item removed from a 64 and does it output ~ channel 35 like original commodore 64s?
* The R-L header. Is it intended to connect to a stereo audio jack, should I fit a plug and cable relieving a hole in the RF Modulator shield to get from the header to the case?
* The VIC-II shield. Should I fit it?
I'm waiting on a couple of zenner diodes to drop through my letterbox and I will have finished. I found the ICS64 documentation, build guide and BOMs invaluable and a pleasure to use. They were half the fun of the project.
RE: RF Modulator, L-R header and VI-II shield - admin - 05-05-2022
The RF modulator is not needed - in fact, it won't even fit because the surface mount parts in the way. The only way to use a modulator would be to remove the surface mounted parts. That would be a bit foolish because the ICS64's video output is quite amazing due to the RF modulator replacement circuitry (the surface mounted parts).
The R-L plug is designed for a 3 pin JST plug to a 3.5mm (or similar) stereo jack cable. That can be either mounted to the C64 case or just passed through an opening. You need a stereo SID chip setup, with the extra SID output connected to the extra "L" pad.
You can use the shield or not. Most people don't.
Nice build - it looks great!
RE: RF Modulator, L-R header and VI-II shield - Julius Goodwin - 05-16-2022
Thanks for sharing
RE: RF Modulator, L-R header and VI-II shield - msharman - 09-27-2022
(05-05-2022, 01:08 PM)admin Wrote: The RF modulator is not needed - in fact, it won't even fit because the surface mount parts in the way. The only way to use a modulator would be to remove the surface mounted parts. That would be a bit foolish because the ICS64's video output is quite amazing due to the RF modulator replacement circuitry (the surface mounted parts).
The R-L plug is designed for a 3 pin JST plug to a 3.5mm (or similar) stereo jack cable. That can be either mounted to the C64 case or just passed through an opening. You need a stereo SID chip setup, with the extra SID output connected to the extra "L" pad.
You can use the shield or not. Most people don't.
Nice build - it looks great!
Thank you so much for the advice. I have another question; do you know if there is a cool running VR2? Mine gets hot enough to need a heatsink which prevents me from using a C64C case.
RE: RF Modulator, L-R header and VI-II shield - admin - 09-27-2022
This is normal, just like a stock C64! I would recommend one of these switching 5V regulator replacements:
XP POWER TR10S05: https://www.digikey.com/en/products/detail/xp-power/TR10S05/6707495
CUI VX7805-1000: https://www.digikey.com/en/products/detail/cui-inc/VX7805-1000/7350292
CUI V7805-1000: https://www.digikey.com/en/products/detail/cui-inc/V7805-1000/1828608
Recom R-78C5.0-1.0: https://www.digikey.com/en/products/detail/recom-power/R-78C5.0-1.0/2652148
ALL of these run cool because they are switching - so no heat or heat sink.