Binghamton, NY Nov 10, 2009 #7 I am not common with meter operation, but I might suspect that it needs to ship the switching voltages (13v for odd and 18v for even). And, if you might want to see the other sats it really should send out the 22khz tone. https://dienphucthinh.mystrikingly.com/blog/cap-tin-hieu-rs-485