You can add an antenna to both the receiver and transmitter of the ET-73. I bought the parts for a couple bucks at a RC Store, but the New ET-732 came out and and lost interest in the mod. I sent my parts to jjwdiver so he could convert his ET-732.
I sell both the ET-73's & ET-732's. The ET-73 is good, but the ET-732 is AWESOME. Maverick took all the shortcomings of the ET-73 and incorporated the improvements into the New ET-732.
Better Range
Backlight
High/Low Temp Alarms
High Temp Probes
Out-Of Range Alarm!!!
If the ET-73 loses it's signal, it can display an old reading, and not receive the updated temp. Your smoker or food temp could change, and the receiver may not display the updated reading. The NEW ET-732 will flash and sound an alarm if the signal is lost or out of range.
Lots of guys till using the ET-73 with great success!!
I've sold over 150 of the new ET-732's and only had one issue. Turns out the ends of the probe were not pushed in all the way, so I chalk that up to "Operator Error"
If you order on my site, don't forget the coupon code for "Free Shipping" = ET732SHIP
Todd