Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Multi Elmac
#1

Ok i have the following AF-67,AF-68,PMR-7A,

Power Supplies M-1070, PS-2v

Question Does anyone have a working system? I am confused with the filament supply it has 6 volt and 12 volt.. I want to connect the af 67 and pmr-7a together ..

Any help ??

Skip
#2

Do you have the interconnecting cables with the cinch jones connectors on the ends?

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
#3

yes . on the m-1070 their is a 8 pin octal socket I do have a cable from the 8 pin to a 15 pin.. with a relay also for tx to rx..

also have the 10 pin connector on a different power supply looks like homebrew i assume for the receiver..

the ps-2v has a 15 pin connector on it

Skip
#4

Ok good. If you are powering them from the AC side of the p/s the heater voltage shouldn't be an issue with the proper cable. The manuals can be found here:  https://bama.edebris.com/manuals/elmac/ 

Plan A. Read the schematic and sort all of the heater/plug connectors.
Plan B. Grab a variac and use that to regulate the ac input to the power supply while watching the heaters.
Plan C. Abandon all cares and plug it in. Flip it on and if you so a bright flash like Hiroshima it's wired wired wrong.

I've had/have the AF-68 & PMR-7. The '68 is a  good little AM transmitter and the 22 1/2 v battery was still good from '60. Sold that one and bought another 4 or 5 yrs ago. Didn't have the p/s so I powered it w/a Harvey-Wells APS-50. Used a hand full of automotive push on connectors to connect to the jones plug.

The PMR-7 I don't remember too well other than it gets hot as a blast furnace and the selectivity is broad as barn door. It's fine for AM but listening to cw or ssb is a challenge.

For those of you that are following at home this is what the AF-68 looks like is the raw. 6146 modulated with a pair of 5881's or 6L6GC's

GLOM


Attached Files Image(s)
   

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 91 Speaker Replacement
The spider is glued on the cone and so is the voice coil. I think you can use a cotton swab dipped in acetone and carefu...RodB — 02:42 PM
Restoring Philco 37-604C
Yes I saw that. If I knew, I'd probably try to arrange for getting it myself. But I have just got one. Which does not m...morzh — 01:44 PM
Philco 38-2 Automatic Tuning
When you push the lever, you are supposed to rotate the disk to the desired station. Then the magnetic tuning will acqu...morzh — 01:42 PM
Philco 38-2 Automatic Tuning
I figure out the muting from another picture that helped. Now I need to know how the automatic tuning works. When I push...dconant — 12:11 PM
Philco 91 Speaker Replacement
How would I go about removing the spider from the cone?dconant — 12:04 PM
Philco 38-2 Automatic Tuning
Hello, I am having trouble getting my automatic tuning to stay unmuted. If I play with the tuning handle I can get it to...dconant — 10:51 AM
Does anyone make photofinish replacements?
Here’s the link to the DIY photofinish section of our site: klondike98 — 09:46 AM
Delco car radio Peko vibrator converstion issues
Hi Richard, Thx for posting the schematic.  As I remember as a kid, these were great performers for the time, likely...MrFixr55 — 08:56 AM
Delco car radio Peko vibrator converstion issues
hello mr Fixr, The Electro  Powersupply that I am powering the radio with has a huge choke plus a 10,000ufd electrolyti...radiorich — 10:58 PM
Delco car radio Peko vibrator converstion issues
How about putting a choke in the power supply? The big cap was likely an attempt to stabilize the DC. Kids who cre...MrFixr55 — 09:19 PM

[-]
Who's Online
There are currently no members online.

>