Okay, Kinda on the fence post about the AGC mod. Did that one to a talking house for and the results were just okay. Modulation was not any better (louder) been going through the AGC circuit but the audio didn't sound quite as smooth. That's a pretty cheap AGC – IC that they have been there but it doesn't seem to be messing up the frequency response very much. since this was a talking house for that I had a part I did make that capacitor change that was mentioned a few posts back and bumped up the bass just tax and sounds pretty good. I'm not gonna make any modifications to the talking house five; that unit sounds good just the way it is. Now on the ATU, has anyone tried to come up with a servo or something to help fine tune the unit. I could even that meter out or wire another meter in parallel lines running down the pole. I'd just like a little easier way to tweak these things while they're up in the air.
Dictated into my iPhone hopefully what I said is what you got
Hobby Engineering has exactly what you would need to add a remote motorized control for the tuning of the ATU. However you may want to put the ATU in a larger outdoor box as there is not enough room within the stock ATU box to fit anything such as a remote servo or motorized tuning control.
RFB
Cool. I'll let you know how that works out. The ATU arrived today and I just ordered the kits from the hobby site. it will probably be a couple weeks before I'm able to spend any time on it and yes, I will have to get a new enclosure for everything. Just need to see how much space I need after that little motor arrives. Thanks for your help. Good suggestion!
Also get one of their large pulley wheels with the rubber track on the outer edge. Then use two metal tin can lids to form a guide for a belt. The pulley wheel is the same size as the wheel put onto the ATU tuning shaft. With the gear reduction motor and identical sized wheels on both the ATU tuning shaft and the geared down motor, it allows for slow and smooth tuning through the DC motor controller board.
Feeding the detected RF voltage from the ATU's own RF sensing circuit, fed that low DC voltage into an OP amp for sending the voltage down the control cable into the house and connected to a meter inside the control box with the DC motor controller.
Works great..especially during those -15* winter wonderland chill to the bone days....and nights!
RFB