Hey guys. Been looking into ways to effectively boost range a bit. Not looking to go 8 miles away, just want a stronger signal. But I'm looking to avoid adding batteries and spending hundreds of dollars or soldiering up my controller board. Anyone try these out before? Seen a bunch all bragging of 4x range. Impressive if true, for not needing an amp. https://www.amazon.com/dp/B01C2KOU5G/ref=cm_sw_r_sms_awd_u.10wbCE4Y9CT I'm open to ideas and options. Thanks!