Although a bit off topic to the reverse engineering project, I recently went on a detour on my way up to a graduation party. One of my stops being in Elm Creek, Nebraska – the former home of CD&F. In the first picture, you can see one of the former CD&F buildings located on 202 East Front S...

Although a bit off topic to the reverse engineering project, I recently went on a detour on my way up to a graduation party. One of my stops being in Elm Creek, Nebraska – the former home of CD&F. In the first picture, you can see one of the former CD&F buildings located on 202 East Front St...

I'm not having much luck with mine. So far I only have three tone filters working, and one of them only works at 10Hz below the specified tone frequency. 688.3 (replaced chip and reflowed joints; works but only at 678 and lower for whatever reason) 726.8 (works) 767.4 (used to not work, now randoml...

I'm not having much luck with mine. So far I only have three tone filters working, and one of them only works at 10Hz below the specified tone frequency. 688.3 (replaced chip and reflowed joints; works but only at 678 and lower for whatever reason) 726.8 (works) 767.4 (used to not work, now randomly...

Just got the control board all the way wired up and done last night. Still have yet to test it, which I'm hoping to do sometime soon. In other news, I finally got all 16 drivers after encountering an issue with the supplier, who originally only sent me 11 of the drivers. I also applied the two Civil...

Would it be possible for you to measure the dimensions of your own AL-4000? And is there a link to the manual, because I would love to have a read through of it. I don't mean to bother you or rush you, so don't bother forcing yourself to do this if you don't have any free time in the near future. A...

Hey all. I've been trying to find a manual for the ACA alertronic line to look at the specs of the AL-4000 but I cannot find one. Does anybody have one, or can anybody just tell me the length, width, and height of the AL-4000? Thanks. I've got the manual saved, but it lists no dimensions. I do, how...

Oh nice! Is it like this one I saw on ebay? I tried contacting the guy to ask for a large one and offer to pay extra to ensure that/for the hassle but no response. The ones with maxon radios seem luke a much better solution, there were some earlier variants of this kinda that are all analog in the ...

I've been waiting for someone to do something like this! Best of luck on it! I've got a large CD&F if you're interested in tackling that. I've got a 1991 Plectron / Federal Signal SC controller I'm trying to get working; I might be interested in some help with reverse engineering the tone filte...

I've been waiting for someone to do something like this! Best of luck on it! I've got a large CD&F if you're interested in tackling that. I've got a 1991 Plectron / Federal Signal SC controller I'm trying to get working; I might be interested in some help with reverse engineering the tone filter...