Position of Antenna?

[Channel Ribs]

Originally Posted by actions

The beauty with the pacific areial is it unscrews after use and allows the boat to slide into the garage with about 2mm to spare.

The Witch says "more luck than judgement", yet again proving that she has no soul.

[Channel Ribs]

Originally Posted by spartacus

Please PM me.

Will do

[Duck Witch]

Originally Posted by Channel Ribs

The Witch says "more luck than judgement", yet again proving that she has no soul.

A little harsh i think

[actions]

Originally Posted by Channel Ribs

The Witch says "more luck than judgement", yet again proving that she has no soul.

It was all planned and measured to the finest of detail. Well actually got the wife to hold it whilst i shut the garage door, it worked, so i made some holes, no turning back. Little did she tell me it might have moved slightly when i went to mark it

Still if it didnt fit i'd have blammed the provider

[Channel Ribs]

Originally Posted by actions

It was all planned and measured to the finest of detail.

Just don't top up the air in the trailer wheels.

[actions]

Originally Posted by Channel Ribs

Just don't top up the air in the trailer wheels.

. I could always dig down the garage floor, that would be an easy quick fix.


Seriously though, if i raise the jockey wheel i get a lot more room.

[Salty John]

Originally Posted by spartacus

Could be the antenna is too close to the receiver?

You should try to keep the distance between radio and antenna to no less than 1m or so.
I'd look carefully at your connectors, it's very easy to snag a strand of the conductor as you pass it into the PL259 causing a short. With the antenna and the radio end disconnected there should be no continuity between centre pin and the PL259 body on a multimeter.

[Erin]

Originally Posted by Channel Ribs

The Witch says "more luck than judgement", yet again proving that she has no soul.

She has a soul, but the real question must be who did she sell it too?

[spartacus]

Originally Posted by Salty John

You should try to keep the distance between radio and antenna to no less than 1m or so.
I'd look carefully at your connectors, it's very easy to snag a strand of the conductor as you pass it into the PL259 causing a short. With the antenna and the radio end disconnected there should be no continuity between centre pin and the PL259 body on a multimeter.

I resoldered the connectors as I thought it might be a stray strand but there's nothing that I can see. I'm going to move the antenna temporarily to the back of the double jockey seat (at least 1m away from receiver). I need to order some more co-ax (more than I need), as the final destination with be on a transom pole, then routed through the under-deck trunking.

I do have a multimeter, so checked the resistance tonight. No resistance at all, reading was 0 ohms. I'll try moving it. If that doesn't work, then I may have to send the receiver back to ICOM, although I'd rather not... considering I put a bead of sikaflex around it when it was installed.

[captnjack]

Originally Posted by spartacus

I do have a multimeter, so checked the resistance tonight. No resistance at all, reading was 0 ohms.

On my multimeter this would be a full short then. When there is no continuity the screen reads "---" or something like that. Basically you want infinite ohms of resistance between the center pin/connector and the outer body of the connection/sheath of the coax.

[ashbypower]

Was the antenna conected to the feed? because a short is perfectly acceptable with an inductivley coupled antenna

[Salty John]

The antenna will show a short. That's why to check the cable you need to disconnect it at the antenna and at the radio. Then you should see infinate ohms on a multimeter across the centre pin and the body of the PL259.

The multimeter screen should read the same as when the meter is on and the probes are not touching anything. Touch the two probes together - that's what you'll see for a short.

[Salty John]

Originally Posted by captnjack

On my multimeter this would be a full short then. When there is no continuity the screen reads "---" or something like that. Basically you want infinite ohms of resistance between the center pin/connector and the outer body of the connection/sheath of the coax.

Agree. On my multimeter 0 is a short and 1 is infinity.

[jwalker]

Many vhf antennas are a J aerial or a version of that configuration. In this case the screen and feeder are connected, one each, to the legs of the J at the bottom of the J so when checking the continuity using a multimeter a full short will be recorded. Therefore this test is not a valid way of checking since a cable short fault will give a similar reading on the meter.

[Salty John]

The Metz is internally grounded and will, in common with most antennas of this type, look like a short to a multimeter. Thus, you must disconnect the cable in order to test it with a multimeter as described.