UG536B/U N-plug Instructions ?

John:

The body of the UG536B/U looks quite different from the Amphenol catalog picture and their drawing link is broken...how did you cross-reference it ?

Steve

John:

Yup...now the drawing link is working for me and I found that too...rather roundabout....and not listed in the catalog section....but it got me there (and I spent a few minutes poking around that website before posting too !).

Thanks, Steve

============================= Question ; Would it be sensible to use RG58/U for 2.3 GHz sig (obviously depending on length of that type of coax) I thought teflon type coax was almost mandatory for that frequency. Just curious , wishing to learn .

Frank GM0CSZ / KN6WH

Not really, but it is what I have available at present ! Teflon vs polyethylene isn't reallly that important with regard to frequency...it is more a question of quality of the shield, I think. I suppose polyethylene insulation will tend to melt while soldering connectors so it is more likely that an impedance bump will occur due to the centre conductor being off-centre. Non-solid insulation would have less loss but this has to survive being passed through car-door seals.

It is probably a good thing these things have been discontinued, too. I found it impossible to assemble without special jigging to prevent the insulation from melting and swelling up while soldering the pin, blocking the assembly. Teflon insulation would behave better I suppose.

With one end kluged into shape with a hot knife and the other end soldered with the insulation wrapped with aluminum tape, the return loss of the cable and a good load measures around 27 dB or better (probably beyond the accuracy limits of my test setup), so they work OK regardless of the kluges.

Steve (VE3SMA)

================================ Thanks Steve for the above . Unless 50 Ohms coax is absolutely necessary , you might wish to consider 75 Ohms coax as used for domestic satellite receivers (between the rx and the converter,also called LNB=Low Noise Block,located at the dish). That type of coax is double screened with both braid + copper foil and would be superior to RG58/U coax. It is fitted with socalled F-connectors ,without having to solder since the solid copper core serves as centre pin. I have been able to purchase F to N-male adaptors and by using an additional double F-female union ,this would possibly solve your problem as well . Sat receivers normally have an input signal between 950-2150 MHz ,with the dish converter subtracting 10 GHz or about from the actual satellite signal received .

Frank GM0CSZ / KN6WH