Hi, and welcome to the forum.

To interconnect 2 66045 units is not "doable"...
And certainly not connecting them to the same electrical track circuit...

You can make your own "Delta pilot" easily, but the address 80 limitation is of course still there.

What would be perfect for you, would be an Intellibox (2 throttles), but it is a bit on the expensive side...

I am sure our member Lars will tell us about Daisy as an alternative. In fact, I myself would like to know more about the Uhlenbrock Daisy as alternative to Delta...

Welcome, Sirgawain123

Afaik, one Mobile Station could be slave to a Central, not sure if it can be a slave to another Mobile Station. Anybody can answer?


Motorola and DCC, 256 turnouts, 9999 Loks, but no feedback from still-to-be-seen Mfx Decoders.


Anyway you are limited to 5 addresses that are the same in both systems


Whenever AC current gets into the Digital Central, all of them, the output stage of the unit gets fried. At least one, sometimes both Darlington transistors get damaged. I don't know what method could be used for the isolation segment. In old times, when Märklin= was launched, they recommended a car light bulb in series with the DC fed track section used to resolve the DC-loop problem. The risk of a failed experiment is a couple BDX33/BDX34 transistors put into orbit...
Regards,

in fact, my statement that i could see two mobile stations in the future was led by Dikken post. But this future has not arrived yet, and i want a stop-gap device.
Two electrically isolated circuits is not what i want. i want to drive a loko through the whole layout while my kid drive his own one. The QnD Delta pilot would be a right solution if it wasnt for the adress only nr.80 limitation.
pitty the grey connection on 4f is an analog input only.
thanks n regards
today sunny although windy.

One more reason to wait longer.


Future not yet here, then.[}:)]

Still cant understand how a 4f can talk to a PC, but not to another 4f [:(]

best regards

Hi Perz, a friend of mine wants to use a D4f as a booster and I don't have the knowhow. Could you please tell me how to do? Thank you!

This describes how to use the 6604 as a booster. It should be the same with the 4f.

http://www.marklin.nl/digital/images/schema-6604.gif

Another interesting link I found shows that it is possible to patch an old 6604 to get the equivalent function of a 4f:

http://www.marklin.com/tech/digital1/images/6604+.jpeg

is it possible to download the online manual for the Mobile Station?where?
many thanks

Thanks for your answer. I've installed several Delta 6604 as boosters. 6604 works as an amplifier, taking the input from the red wire. The problem I see with 66045 is that the red wire is missing, thus I don't know where to input the digital signal.

There should be a blue connector marked "D" somewhere that replaces the red wire. But I do not know exactly where, since I have never seen a 66045 in real life.

[url]Sorry that link doesn't work, sending you in circles all the time ... [/url]

The link sends you to another forum topic, that links to the manual. But anyway, here is the direct link:

http://www.maerklin.de/systems/bda-60652.pdf

keeping in mind that regardless of the minDIN connection to the ugly box (connection track), at the end of the day, what we get from the ugly box is still the traditional red and brown to the track:
Shall we assume that 66045 (Delta 4f) is still usable as booster for Mobile station?
(my knowledge of both electronics & model railroad is sooo short......!!!)[}:)]

About having two daisyS, not time for big investment until mfx two way comms compatibility is achieved.

What i (and others) need is a CHEAP (so cheap it doesnt matter if it is not future proof) two throttle, no function, no isolated tracks, solution until the path to the future is clear. Two 66045 4fs would be an answer. pitty it is not. [:(]
¿can the 66045 be opened & manipulated to allow Delta pilot adress to be selectable out of adress 80 to any other of the four delta adresses? finding a feasible way to do that may be a good quest for the summer for those who really know about Marklin electronics.[:p]

Best regards

I don't agree. The booster is inside the Mobile station just as much as the booster is inside the 6021 or the IB. The Mobile station probably uses an H-bridge, but that doesn't stop you from using a 66045 as external booster. It only means you need to use different transformers for the Mobile station and the 66045, and not connect the ground wires of the two transformers together. But you would probably want a separate transformer for your extra booster anyway, wouldn't you ?

There are two cases:

1. Using 66045 as a booster. This is what we are mainly discussing in this topic. For that specific case, your comment about H-bridge or not is definitely invalid. There is no problem. Look at the link I provided in an earlier topic! The control input to the 6604(5) is taken from the "red" track power, and the ground to the 6604(5) is taken from the "brown" track. The signal is there on the track, and it will look the same, whether the Mobile Station has an H-bridge or not doesn't matter.

The drawback with using the 6604(5) as a booster is that there is a delay through it, which means you can get problems when locos cross over between the "normal" and the boostered section. This problem is however exactly the same whether you use a Mobile Station or a 6021. That's why it is usually recommended to use the 6604(5) as an accessory booster and not as a track booster.

Another drawback (or maybe feature ?) with using 6604(5) as a booster is that an over-current situation on the booster will not feed back a stop signal to the system, as will be the case with a real booster.

2. Using a real booster, such as 6017. In this case you use the 5-wire booster interface. The 6017 has a 0 to +5 V signal referenced to track ground. We do not know anything about the booster interface of the Mobile Station yet. We do not even know if there are any plain booster signals in its interface. My guess is that the master and slave Mobile station use some other more intelligent protocol to communicate. Maybe the future "boosters" will do the same and maybe they will not just be simple amplifiers as they are today.

So probably the 6017 can not be used as a booster to the Mobile station without building some kind of interface. If you accept the same limitations as with the 6604(5) such an interface is very simple: it consists of two resistors to take down the voltage from 20 to 5 V, and a diode to short out the negative pulses so that only the positive pulses remain.