At some point in their production Vivitar redesigned the flashes so they had low voltage across the sync terminals. The newer ones have less than 12V the older ones about 200V. However that happened in the 80's, so older and newer is a relative term.
There are three ways to tell: 1-- supposedly, the low voltage models have a red dot inside the battery cover (note that it might have been changed at some time in the past). 2-- Send the serial number to Vivitar and they will tell you which you have. 3-- Check it with a digital multimeter. #3 says my 283 is an old one. Graywolf Website: http://www.graywolfphoto.com Blog: http://www.graywolfphoto.com/journal/ ----------------------------------------------------------------------- David J Brooks wrote: > I have the 285HV, so my guess is the older model they speak of is just > numbered as 285, with no HV. > > So it "should" work with a 360 and 285 Hv then. > > Dave > > On Dec 6, 2007 11:04 AM, Charles Robinson <[EMAIL PROTECTED]> wrote: >> On Dec 6, 2007, at 8:15, David Savage wrote: >> >>> I don't have those, but I do have a set of these: >>> >>> <http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEBX:IT&item=170157727097&_trksid=p3984.cALLBUY.m311.lVI >>> I have 1 trigger & 2 receivers that I use with my AF-540 FGZ & AF-550 >>> FTZ flash units. >>> >> I have those too, and as cheap and flimsy as they are, they do work! >> >> -Charles >> >> -- >> Charles Robinson - [EMAIL PROTECTED] >> Minneapolis, MN >> http://charles.robinsontwins.org >> >> >> >> -- >> >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. >> > > > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

