[Boatanchors] T/R switch question _ 221122

[corner5]

hi all,
.
I am new this group as well as new to the world of BA.  I am starting to 
collect pieces for my new (to me) BA station and have a couple of 
questions about T/R switches.  I currently have two of them and seek 
advice how best to use them.
.
Switch-1 == B&W model 377B.  The coil tests good (800 ohm per spec), but 
I am unable to confirm what voltage to apply to the coil to toggle it 
(AC, DC, value?).  The coil is labeled as follows: "C.P. Clare & Co E.C. 
Coil Relay Turns 11800 ohms 800 ohm 37E.C., 462-1391-2".  This may need 
115VAC, but I wanted to check so as not to fry the coil.  What voltage 
to use or how to determine same?
.
Switch-2 == Not labeled as to model but clearly resembles the classic 
line of Dowkey units.  This unit's coil is nicely labeled as wanting 
115VAC and it works fine.  I have studied up about best practices 
relating to toggling between a BA transmitter and separate receiver, and 
have noted that it is recommend to utilize the secondary relay set (not 
the primary RF one) to mute the receiver ideally just before switching 
to the transmitter.  But... this particular Dowkey (no model ID) does 
not have the secondary relay contacts.  My question here is if it is 
still safe to use this T/R switch for this purpose?  If the muting is a 
must, can I run a secondary relay for this need.  This last has me a bit 
unsure due to exactly how to simultaneously toggle both relays.
.
I don't want to over complicate this, but I am trying to build on little 
funding yet still want to do it correctly.
.
thanks for any advice.
.paul.
.