Hello all,
I'm wiring up an interface to replicate the 1544 adapter, per the diagram on http://www.dproducts.be/DRAKE_MUSEUM/images/conR7TR7.JPG and have a question. If I am not modifying the R7 per the 1544 instructions (utilizing the Jumper Uncut switch position as shown), I'd like to know if I really need the external 13V input from the rear of the R7, since the interface cable has 13V available on pin #10 (also from the rcvr.). It appears that the external 13V is only needed if the Jumper Cut position is used, which removes the shunt from the emitter to the collector on the 2N4402 transistor. Am I correct in this assumption? (ps. I have the unit wired in now without utilizing the 13V external DC jack of the R7 and it appears to be working fine!)
Thank you advance!
73,
Dave - NO3K

