Cables Messi & Paoloni
Modern manufacturing makes it possible to produce technically better and better coaxial cables. Messi & Paoloni celebrates its 70th anniversary in 2016, and has been producing high-quality coaxial cables for ages. Cables from Messi & Paoloni have low attenuation, low weight, excellent environment resistance and attractive prices.
By the way, you will learn that coaxial cables do not only have the three parameters "diameter, attenuation, price", when listening to managing director Stefano Messi for a while...
For instance, the braid is produced by using a braiding machine with 24 spools, while others have 16 spools only. This guarantees excellent screening efficiency, very good mechanic stability and great flexibility.
The inserted copper foil (M&P-AIRBORNE 5: aluminium foil) is laminated with a though plastic foil for additional tensile strength and to prevent the metal foil from tearing when there is a small bend radius or misuse. The screening efficiency with a range of 100-2000 MHz is thus better than 105dB! Both absorption of interferences (man-made noise or the signal of neighbour stations when cables are laid parallel) and emission of HF from the cable is reduced vastly.
The air-foamed dielectric is composed of a triple layer: high density/shut surface inside and outside and inside hollow spaces.
This way wetness inside the cable can be reduced a lot, even if the outer isolation has been damaged.
The inner conductor consists of 99,99% pure copper, which is soft annealed to improve mechanic properties.
Depending on the cable the jacket consists of either black PVC with an extra UV resistant coating, or of watertight polyethylene.
With all these measurements the cables from M&P have a very stable SWR and constant impedance even over a long period of time.
When it comes to performance specifications, the manufacturer's approach is very conservative.
Power ratings are calculated in a very cautious manner and are valid for 'key down' operation like FM or RTTY. In SSB operation a 5-6 seconds transmission time followed by the same reception interval allows to almost double the power handling mentioned. However, the specified 'max. peak power' must not be exceeded!