Hello Trappers,
I have been building and using callers now for several years. I have a several of Tom's Wasatch callers, which are awesome in and of themselves. I asked him to build some custom stuff a year or so ago, but he is usually beyond his capacity with his bread and butter model. I came up with this fully customizable design.
I wanted a louder more clear caller, the caller in the video is a simple version. It has a 3" all weather speaker, Photocell, adjustable delay in call sequence(call sequence can be adjusted from 1 minute to 16 hours), and adjustable volume. I have built several with 7day timers instead of photocell and some that you can use either way. I usually load a custom call sequence instead of one call playing over and over.
Full disclosure the downside to these callers is the power consumption. Because of the large speaker and amp, I run these off of motorcycle battery. I have been getting 5 to 15 days depending on volume and call sequence delay. I have had pretty good success adding small solar panel as well.
I have some time on my hands now will be building these for sale, if your interested please email me.
Happy to answer questions here but not going to engage in debates of tech vs traditional, or negative comments.

simplyhoney@hotmail.com

https://youtube.com/shorts/Wq4dPNTkGL0?feature=share