Originally posted by Val
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regards,
Funksammler
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No, there is a direct connection to the antenna. The length of the cable seems to be tuned to a full wavelength mid range of the Torn.Fu.d2 assuming a velocity factor of 0.5 (which seems a reasonable assumption given the materials that the Germans used in the construction of the cable).
regards,
Funksammler -
I have some original cable available, drop me a PM.Originally posted by SpookyDad View Post
regards,
FunksammlerComment
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PM sentComment
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This is my repro set up in my back yard. The yard isn't as pretty as Funksammlers.
The antenna is a decorative repro as well.
NeilComment
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How would you set up the counterpoise for this set?Comment
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Hello
i need somme one ! Where is it possible to buy one ?
Originally posted by SpookyDad View PostThank you for the information.
Is there a modern source for this type of cable, or a NOS source?
Here is a picture of the repro. It is almost complete. I need a buckle and a web strap for the middle. I am planning to take a couple of pictures of it out in the yard tomorrow, depending on the weather.
I am going to get an original zelt pole end socket for my restoration, along with an original buckle. I used a piece of 3/4" copper water pipe for the socket as it is the perfect size. I had to guess on the start of the taper on the wood shaft.
I am not sure if the rope is supposed to be white when new, but white cotton rope is all I could find. I used a red whipping thread for the first couple of thimbles, but it nylon or polyester. I like the color but the texture isn't right. The rest of them are woven hemp with a natural die. The sliding blocks are 3mm pertinax but 10 mm seemed a little too narrow with the 1/4" rope. So I made them 12mm wide. The holes could have been a little smaller but seem plenty strong enough.Comment
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75 Ohm Coaxial cable.
If anybody is searching for 75 Ohm coaxial cable, Belden 8281, normally found in TV studios, is would work. The cable diameter is 7.5 mm (Approx .3 Inches) and is double shielded, available in black, or a variety of colours. Not generally sold in short lengths. so try to find a friend at a TV studio engineering department.Comment
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Ground plane antennae.
The antenna is indeed a ground plane type, but I would not like to try to guess its feed impedance on any frequency within the range of the transmitter. In theory the GP antenna offers a 50 Ohms impedance at its resonant frequency. With the antenna system under consideration, the angle of the four radials and the proximity of surrounding objects such as trees not to mention variation of the transmitted frequency could all change the impedance of the system drastically. The tuning and antenna loading arrangements of the transmitter final amplifier are also very simple.
Taking all these factors into account, the impedance of the coaxial feeder, given its relatively short length is of little consequence. A length of twin lamp cord would probably work as effectively. However I understand and agree that to get as close to the original appearance is the most important factor in restoration.
Perhaps the closest coax in size to the 11mm described by Funksammler would be Belden RG11. Seldom used today, it can still be occasionally found in Ham radio fleamarkets.Comment
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Can anyone provide me some more detailed dimension of the Abgesetzte Antenne please?
I would like to complete a D2 set up for my reenactment group
Here a picture of the antenna base i made.
Best,
LucaComment
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