I notice that Toober has a pretty uncommon J-28/ARC-5 junction box on ebay, used in conjunction with the C-30 or C-30-A/ARC-5 control boxes to add the VHF transmitter to an HF set. Yes, you can do it in cabling, but this is more elegant. :-) http://www.ebay.com/itm/390880977453 is the link for those interested. 73, - Mike KC4TOS