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Glomex RA111AIS

Aerial designed and tuned specifically for use on the AIS frequencies at 162mHz .  A flexible and pliable stubby type just 5 cm long, this fantastic little aerial can be mounted low down e.g. on a stern rail and  won’t end up getting bent as a result of being leant over whilst deploying ropes etc.

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The importance of using the right cable

 

RG8X extra quality low loss cable

We don’t supply RG58, the cable normally supplied with these aerials, as it has significant losses over length. We use RG8X which is a good compromise between RG58 and RG213 cables. Whilst RG58 is suitable for short runs of co-axial cable, at 30 metres the losses may be noticeable. This is inevitable as all cables exhibit loss over length so ideally a cable should be chosen with the least losses but here there is a trade off as less loss will mean a cable with a thicker inner core, a thicker dielectric insulation and a more dense outer braid. This all adds up to a cable that becomes very expensive and also unwieldy and inflexible. RG213 is a good example – this is the cable that Radio Hams use – it has significantly lower loss over distance but it is expensive and when installing it is very hard to get around corners and into tight recesses as the cable is so inflexible.  RG8X (or mini8 as it is also known) is a good compromise, a much better cable than RG58, it has a thicker inner core, a thicker dielectric insulate and a much denser outer braid (see image) yet it is very flexible and is only 1.5mm thicker than RG58. (RG58 is 5mm, RG8X 7mm)

If you would like one end left prepared but unterminated for ease of cable installation through a bulkhead etc (needs a 7mm hole) choose your cable length and whether you require both end connectors fitted or just one and the other  end ready for fitting but the end connector still to be attached. We will prepare the cable this way. All you need to do after installing the cable is to screw on the PL259 and solder the tip (very important that it is soldered) – a length of low melting point solder is included in the aerial kit for this purpose.

 

TECHNICAL SPECIFICATIONS

 

FREQUENCY RANGE 161,975 – 162,025 MHz
GAIN AVERAGE 1 dB
IMPEDANCE 50 ohms
POLARIZATION Vertical
SWR ≤ 1,2 at 162 MHz
MAX INPUT POWER 50 W
DC GROUND No
ANTENNA LENGHT 140mm/5”
ANTENNA WEIGHT 220g/7,76oz
TERMINATION SO239 for PL259 male connector

 

 

 

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