[1000mp] Sticking relays revisited.

graeme.g4ckh [email protected]
Fri, 26 Mar 2004 20:39:16 -0000


Hi everyone on the reflector, i'd like to chip in with my two penn'eth.
I own a ft1000mpdc which is about 8 years old, and I purchased some two =
years ago now.
I have never experienced any problems regarding sticking relays in the =
front end, although i have made an allowance in the menu system to =
protect the switching relays going from receive to transmit (according =
to my understanding of how the rig works ?????)
If you look at menu 7-4 the default is 5 ms, my understanding of this is =
that when you press the key the carrier is delayed by the value in 7-4 =
but the switching relays in the rig (rx to tx) are not delayed, as if =
using an old style linear amp.  Now its my guess that the switching =
relays operate in around 6 ms, therefore it is possible that with the =
small default setting of 7-4 (5 milliseconds) the relays are hot =
switching.
I have always operated the rig with 7-4 set to 10ms to give some degree =
of prot'n to the relays.
Can anyone confirm the above ?????
All the best ---- de  Graeme,   G4CKH.


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