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View Full Version : Ordered a couple of thermometers...


Rodney
04-08-2010, 09:19 PM
I got online and ordered my ET-73 wireless smoker thermometer:

http://ecx.images-amazon.com/images/I/41XV8Q7N89L._SL500_AA300_.jpg (http://www.amazon.com/Maverick-RediChek-Remote-Wireless-Thermometer/dp/B0000DIU49)

and my ThermoWorks RT301WA Super-Fast Pocket Digital Thermometer:

http://ecx.images-amazon.com/images/I/4114l85lvcL._SL500_AA300_.jpg (http://www.amazon.com/RT301WA-Super-Fast-Digital-Thermometer-ThermoWorks/dp/B002GE9S8I/ref=sr_1_3?ie=UTF8)

My ET-7 has HORRIBLE range even after doing that antenna mod (~10', fresh batteries), and I'm hoping that Maverick will take my word for it when I tell them that it was crap in the first place, hence my doing the mod, and replace it for me. Having both an ET-7 and an ET-73 around would be VERY nice. Hopefully they've done something about the range issue on the version of the ET-73 that I just ordered!

Anyone have this RT301A thermometer? Impressions? I figure it'll be more than adequate... I can stand waiting another 3 seconds to take a measurement (compared to the Thermapen). If it turns out I can't, my dad will be getting a hand-me-down. :thumb:

-Rodney

Rodney
04-08-2010, 09:21 PM
Wow... I really like the loop on the temp probe by Oregon Scientific:

http://ep.yimg.com/ca/I/yhst-55532753181910_2098_30984238

That'd make it much easier to remove from hot meat!

WabbitSwayer
04-09-2010, 09:27 AM
My ET-7 has HORRIBLE range even after doing that antenna mod (~10', fresh batteries),

Are you sure you did it correctly(proper location, good soldering, proper length of antenna)? Maybe redo it. My ET-7 got 10' range WITHOUT the antenna mod. With the antenna mod, I can go atleast 40' through block and walls. My smoker sits in my shed a good 30' from the house and I can take my receiver into the bedroom on the opposite side of the house and get reception.

BigButzBBQ
04-09-2010, 09:36 AM
Picked up a kenmore remote thermometer on clearance at Sears for $16.00. I have heard people have had issues w/ them but, the packaging says good up to 100ft, thus far mine has done just what it says it will do.

Rodney
04-09-2010, 11:39 AM
Are you sure you did it correctly(proper location, good soldering, proper length of antenna)? Maybe redo it. My ET-7 got 10' range WITHOUT the antenna mod. With the antenna mod, I can go atleast 40' through block and walls. My smoker sits in my shed a good 30' from the house and I can take my receiver into the bedroom on the opposite side of the house and get reception.

Yeah, the solder joint was definitely good, and the wire was the correct length per the instructions discussed in this link:

http://www.instructables.com/id/Increasing-the-Range-of-a-Wireless-BBQ-Thermometer/

I guess I'm assuming that the ET-7 and the ET-73 are the same frequency. Maybe I should check again on that one.

I had also seen this one:
http://www.susanminor.org/forums/showthread.php?t=571
which is based on an older ET-73 with a similar PCB antenna to my ET-7, and they suggest a 6.5" wire. Which how-to did you follow? Where did you solder it? I'll post a photo of my mod in a few minutes, so we can compare. I trimmed my wire to 6.7", +/- .02" or so, but I only did it on the receiver. I'll have to try it on the transmitter too.

FYI, everyone, this was originally discussed on this thread: http://www.bbq-brethren.com/forum/showthread.php?t=80030

EDIT: I soldered my antenna wire where the yellow circle is. Other how-to's out there suggest soldering to a hole (on the old ET-73's) that I *think* corresponds to the one I've circled in blue. Sorry, I didn't get a post-soldering shot, but I assure you the solder flowed like water. I used silver-plated, teflon-insulated, mil-spec, 24-AWG wire and 63/37 rosin-core solder. By the way, an Xacto knife works much better than sandpaper for scraping off the solder mask before soldering.
http://www.bbq-brethren.com/forum/picture.php?albumid=283&pictureid=2194

-Rodney

WabbitSwayer
04-09-2010, 12:51 PM
My receiver pcb looked exactly like the one from the susanminor.org/forums thread. I soldered like they did, across all three points (including the hole), not the horseshoe loop. I am not sure if your blue circle coincides with what they are talking about (maybe check the FCC site with the diagram as mentioned in the instructables). Definitely do your transmitter as well. I did both of mine (took maybe 20 minutes). Make sure you aren't soldering too hot, I have melted pcb connections together before doing that. Before the mod, I would lose reception with the smoker on my deck (right out my back door) if I took the receiver down the hall. Like I stated before, now I put the smoker in my shed a good 30 feet away from the deck, and can take the receiver anywhere in my house and not lose reception.

Rodney
04-13-2010, 03:52 PM
Long story short: I tried modding my ET-7 again, and it didn't work out. I may try talking to Maverick and see what they'll do. I put an antenna on both the transmitter and the receiver, and no dice.

In the meantime, I received my ET-73 and my Thermoworks RT301WA. I love both of 'em. The ET-73 works just fine over about a 40' range, but I've yet to test it any further than that. Should work fine all the way up to my bedside table for those overnight cooks, since my bedroom window is upstairs and overlooks my patio!

-r