I have a Chrony F1 Chronograph , and I want to add a remote jack ? Does anyone here know how to wire in a remote jack ?
TIA
F1 Shooting Chrony
Here's the deal.. You can buy an F1 Shooting Chrony for only $69 on sale but to "access" all the cool features like Hi, Lo, Average Dev, Standard Dev, extreme spread, etc you need to buy a "remote" or printer that plugs into the "FU" jack.. I thought it was funny that they called it an "F-U" jack since it's such a simple device to exponentially increase the usability of the device - FU obviously means "function" .
Anyways to build a remote you will need a 3 pole stereo 1/8 headphone jack plug. Even though only 2 connections are used a 2 pole jack WILL NOT work!!! Trust me on this as I had to go back and exchange parts.
On a 1/8 inch stereo headphone jack there are three poles - the tip, the middle, and the "base". Even though it is a two pole connection, the Chrony uses the middle and base connections on the plug. All you need to do is solder a length of speaker wire to the above mentioned poles of the plug and put a momentary contact switch at the other end!
Please note that the "tip" connection on the jack's plug is NOT used. I'm hoping that sharing this information will nudge few of my fellow loaders into plunking down for a Chrony now that all of the features can be accessed without purchasing expensive "Extras".
Radio Shack parts
SPST 0.5-Amp Momentary Switch (2-Pack)
Model: 275-1571 | Catalog #: 275-1571
http://www.radioshack.com/product/index.jsp?productId=2062546&znt_campaign=Category_CMS&znt_source=CAT&znt_medium=RSCOM&znt_content=CT2032230 (http://www.radioshack.com/product/index.jsp?productId=2062546&znt_campaign=Category_CMS&znt_source=CAT&znt_medium=RSCOM&znt_content=CT2032230)
1/8" / 3.5mm Stereo Phone Plug (2-Pack)
Model: 274-284 | Catalog #: 274-284
http://www.radioshack.com/product/index.jsp?productId=2104061&znt_campaign=Category_CMS&znt_source=CAT&znt_medium=RSCOM&znt_content=CT2032231 (http://www.radioshack.com/product/index.jsp?productId=2104061&znt_campaign=Category_CMS&znt_source=CAT&znt_medium=RSCOM&znt_content=CT2032231)
(http://i1086.photobucket.com/albums/j441/_The_Shadow/IMG_0009.jpg)
(http://i1086.photobucket.com/albums/j441/_The_Shadow/IMG_0011.jpg)
Press Button Release Button
Sn String number
Lo Lowest velocity
Hi Highest velocity
Av Average velocity
ES Extreme Spread or Hi velocity minus Lo velocity
Sd Standard Deviation
To Total number of shots recorded since Chrony was turned on
10 Velocity of 10th shot
9 Velocity of 9th shot
Repeat process to view each subsequent shot
Thank you very much . It looks like a trip to Radio Shack is in order .
Radio Shack? They're still around ??
I was thinking the same thing:) More like a virtual trip to Amazon or eBay or an electronics site, though you can likely get those items on Amazon.
Ah I get it. It's an expression and a good one. There's no misunderstanding that one. 8)