powering hosa from a 9V battery

[JNT]

Does anyone power a hosa from a 9V battery?  I just bought a ODL-276 and I'm thinking about modifying it for when I run stealth or FOB

Joe

[John R]

radio shack  a litlle more reliable and longer lasting

[JNT]

Thanks John, Yeah I already have a 12v to 9v setup so i can run it off the same 12v battery I'm using to power my JB3 for Bonnaroo.  For regular (non festival) shows I will not need the 12v battery for the Nomad since I will be using the 2 internals.  I would like to power it from a 9V, possibly 2 in parallel so I don't need a large external battery pack.

I guess that radio shack battery isn't too big though, but I'd like to keep things smaller if possible.

I'll try this when I get back from Bonnaroo.

Joe 

[F.O.Bean]

actually, the size of that rc batt is about the size of 3 9v's, so if you plan on putting 2 9v's in parallel or whatever, whats an extra battery size for the reliability and simple hack of the rc battery!

[philR]

plus, the hosa odl-276 that i just got doesn't even have a place to hook up a 9v, all it has is a wall wart plug.

[F.O.Bean]

plus, the hosa odl-276 that i just got doesn't even have a place to hook up a 9v, all it has is a wall wart plug.

youid just have to hack the cable.....

[J.Maye]

Ok. I read the posts about hacking the cable to remote power the hosa odl 276. Right now I have just the ac power supply, which Im going to hack to hook to the connectors that wil go to the 9v rc batt. Before I do this, is there any reason I need to keep the ac part that goes into the wall? If I kept it and hooked up the end like the rc batt, would I still be able to safely run it on the regular plug in power at home, or would that lead to posible disaster? Also, I know I need 9 volts, but is there any limit on the other # (amps I believe)? It looks like the more I get the longer it will stay powered for, but I dont know if I can go TOO high-powered and fry the thing.

Thanks

[johnw]

I wouldn't hack the included power supply simply for the sake that if you decide to resell it later or use it for something else, you may want that wall wart. Plus the adaptaplug cable and tip only costs around $8 and is nice and easy to do - no soldering or crimping. Also, RS sells an adaptaplug cord that has a connector attached for a 9V battery. I keep one of these in my bag in case of emergency, but I normally have a Walmart battery powering the hosa via an adaplug cord.

EDIT:
I don't think that you can go overboard on current since that is what the device is drawing, so a 1000mAH battery should power the Hosa for 20 hours at 50 m-amps. I believe your average duracell coppertop is about 450mAH, so a 9V should work fine for at least one 3 hour show.

I couldn't find the part # for my back up cord on the RS site, but here is a picture of the adaptaplug with the 9V end. It's about 6" long

[J.Maye]

Ok, so keep regular ac/wall adaptor. Then I can just pick up another ac/wall wart adaptor to hack, right? It'll obviously have to be the same size for the input in to the hosa, but does the wall wart adaptor I buy to hack need to be the same voltage and such as the one I currently have?

Thanks

[johnw]

Ok, so keep regular ac/wall adaptor. Then I can just pick up another ac/wall wart adaptor to hack, right? It'll obviously have to be the same size for the input in to the hosa, but does the wall wart adaptor I buy to hack need to be the same voltage and such as the one I currently have?
Thanks

Don't buy another walwart - you don't need to hack anything.
If you want small size, find the plug I posted the picture of, a C tip adaptaplug and a couple of rechargable 9V batteries. If you want power for festivals, buy something like the 9V 5400 aH Walmart DVD battery on Ebay (search for "memorex dvd battery"), a female-female adaptaplug cable, a C tip and an M tip. I think I have the part numbers right, but bring battery and hosa into radioshack to make sure things connect ok.

The 9V battery solution would be about $8 for the cable/tip plus whatever price batteries & charger go for.
The 9V DVD battery would be about $5 for the battery, $15 for the cable and tips.

I would have copy/pasted some of this stuff, but my copy/paste abilities now seem to be malfunctioning again. 

[hzgone]

There was a post about this with all the parts from radio shack.  It worked awesome and i'm currently using it now.  it might be in the archive.

No need to hack anything.  was built and running the 276 in less than 5 min.