[Boatanchors] Ranger1 w/ keyer?

[Richard Knoppow]

     FWIW if you look at the schematic for the Ranger 1 you will find 
the keying line goes to the bias rectifier. The schematic is marked -56 
volts at this point so you are correct about the voltage at the keying 
terminal. The voltage goes through a high resistance so not much current 
can be drawn.
    There is a fair amount of information on BAMA about the Ranger (both 
versions) but the only thing I see about keying is to use a filter at 
the key to prevent local key clicks. An external relay is certainly an 
option but make sure your keyer needs it. My ancient Hallicrafters HA-4 
has a built-in relay so would work fine but some newer ones may not take 
the voltage. The instructions for the keyer should tell you. I would 
avoid extra complication (relay and power supply for it) if possible.
    The 75A-2 is a very good receiver.

On 2/11/2024 12:26 PM, corner five wrote:
> Hello group,
> A question about the Viking-Ranger-I with timed sequence keying. Mine is 
> coupled to a Collins A75-2 via T/R switch.  I am a beginner learning cw 
> and wish to use this fine transmitter in cw mode.  I know the ranger 
> will work as is with a straight key or bug, but I have been encouraged 
> to learn code with a paddle and electronic keyer (both of which I now 
> have, and I can go to the straight key as needed too).  However I also 
> read that the Ranger uses grid block keying and will apply about -50v to 
> the key contacts @ low mA.  Fine for straight key contacts, but may 
> damage an electronic keyer.
> So... Any relatively inexpensive suggestions to enable use of the 
> keyer?  Kit, ready made, build my own circuit with parts list and 
> schematic, different keyer?  I have see a few kits out there but they 
> seem to now be unavailable.  Ideally this solution would include 
> full-breakin, but I'm fine with semi-breakin if that's an easier and 
> less expensive direction.  Please correct any errors I may have made in 
> my assumptions.
> Thanks in advance for advice.  c5.
>

-- 
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998