[Boatanchors] Elmac stuff
Lawrence Godek
lawrenceg94 at gmail.com
Mon Oct 17 14:59:52 EDT 2022
I'm slowly learning about the two transmitters i have, one is an AF-67
and the other is an AF-68. the only power supply i have though is the
PS-2V which while it is complete and operative only has an on-off
switch. The thing that bothers me is that when you go to use the
transmitter in CW you have no way to turn off the B+ like with a Send
receive switch that you saw on other radios of that vitntage. When you
turn on the power supply all you have to do is press the key to
transmitt. No way to put it into standby while receiving. UNLESS! If
you don't have receiver B+ hooked up thru the power supply you can
simply flip the VFO switch on the transmitter to the spot position or
down and then you can't or won't key the transmitter if you press the
key. The purpose of having receiver B+ come into the transmitter thru
the power plug is for spotting purposes via SW_101.
However there is another problem. There is no way using the PS-2V power
supply, which i have that allows for any means of antenna switching and
there is no provision to incorporate such that i can see so how did they
do it? Where did they get a control to activate the ant relay (user
provided) or did they count on using an old fashioned knife switch?
Certainly not feasible with a mobile installation.
I can see the turning on and off of B+ for the transmitter when using AM
or NBFM as there is a relay mod that can be made which gives PTT
capability in the power supply but in CW mode there is no provision to
turn B+ on or off nor to switch an antenna relay.
So what have op's done to make the radio useable to the mass's? What if
any differences other than power supply switching voltage capability
does the M-1070 supply offer?
If you have M-1070 power supply info i'd like to get a copy of it along
with operating suggestions and work arounds for the above situations. I
get about 40-50W out of the AF-67 on CW and about 25-30W with AM carrier.
One other thing, you gotta know what those meter positions are supposed
to read when playing with the transmitter. Having the manual makes a
difference. One of the P readings appears to be with CW and the other
for fone when looking for a dip in plate current.
Larry W0OGH
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