Hello the community.

On a 2nd hand site, someone is selling Marklin 7339 as traffic signals.
On one of the photo, I only see two yellow cables coming out of the signal body.
Moreover, it is sold with an interruption M section.

So I guess, it is a kind of warning signal (or repetition signal) that, ok, stops the traction but if driven by another device, like another traffic signal.

Q1: am i right ?

Q2: can i use such kind of signal to allow traffic to/from a parking area (like a locomotive shed) by just driven it by a control console, like a 7072 one ?
In a classical traffic signal, the signal gives/cuts the traction power (red cables) on both sides of an isolated couple of tracks.
But here, is it a simple on/off switch ?

Thx
Phil

There is a Marklin Signa Booklet that explains all of these things. Look in there, please. I believe it is a signal that sits before the actual signal to tell the driver what the actual signal is se to.

As I understand it, the 7339 is finger-operated without solenoid. So "remote control" is limited by the length of your arm.

Hi Phil,
When it was introduced in 1971 the catalog said it was controlled "by manual operation and control the current to the center stud of the piece of track connected to the signal" and "sold with the "additional piece of track 3-1/2" long, with interupted (sic) center studs". So to have a block section at the signal one needs to use both pieces of the track shown in your image; additional tracks can be placed in between I suppose for a longer block. I hope that helps some.
Brian

Try using google translate before you shoot from the hip!