Mat50

[A71AN]

Look at this piece for the improvment of your mobile system, for sure the noise level went down to non apperance on th scale, mind you need to of these for the 3.5MHZ, I only got one here with the dealer, it was just for show and I managed to buy it from him.

Here is the link

http://www.diamond-ant.jp/ama2/eng_ama_2_13_1option.asp

[KI6NNO]

Hi Rasheed,

I think that it's not so simple, my friend.
Did the noise floor go down while the signal stayed the same, or did the antenna just get quieter? Also, did you try the grounding mat on your vehicle? Does the antenna transmit better? Usually, when an antenna receives better, the noise floor goes up (but so does the received signal strength) - at least in my experience, and all other things being reasonably equal.

There are several antennas out there on the market that are very quiet, but they are also very deaf.

Unless you have a fibreglass vehicle like a Corvette or a composite bed like a Tacoma, it seems to me that the appropriate way (imo) to correct a poor antenna-to-vehicle body ground is to install grounding straps as needed. For non-metal vehicles that need some metal for the antenna to "push against", metal (adhesive copper) sheeting that's grounded to the antenna and chassis seems to me like it would be the way to go, and the more the better.

I'm confused as to why you can't use more than one ground mat for 6M. It seems counter-intuitive that more ground is less better unless it's a tuning issue and these things are acting like radials.

73, Dave

[A71AN]

Hi Rasheed,

I think that it's not so simple, my friend.
Did the noise floor go down while the signal stayed the same, or did the antenna just get quieter? Also, did you try the grounding mat on your vehicle? Does the antenna transmit better? Usually, when an antenna receives better, the noise floor goes up (but so does the received signal strength) - at least in my experience, and all other things being reasonably equal.

There are several antennas out there on the market that are very quiet, but they are also very deaf.

Unless you have a fibreglass vehicle like a Corvette or a composite bed like a Tacoma, it seems to me that the appropriate way (imo) to correct a poor antenna-to-vehicle body ground is to install grounding straps as needed. For non-metal vehicles that need some metal to "push against", metal (adhesive copper) sheeting that's grounded to the antenna and chassis seems to me like it would be the way to go, and the more the better.

I'm confused as to why you can't use more than one ground mat for 6M. It seems counter-intuitive that more ground is less better unless it's a tuning issue and these things are acting like radials.

73, Dave

Good Evening you my friend.

In a matter of fact, it was only this week where I discovered that my Mobile IC-706 is not been earthed, yestrday afternoon I went back to the dealer here and I told him about it as they have done all of the instalations in my car.

This piece act like earthing the whole car and also as a redials.

This is on my big 4 wheel drive car, In my small 911 which I bought only 3 months back never had a problem with the sort of noise I am getting in this car, in the 911 I use the GT-975D and it is all ok.


Please check on this piece my friend

My best regards to you

[KC2TAU]

Good Evening you my friend.

In a matter of fact, it was only this week where I discovered that my Mobile IC-706 is not been earthed, yestrday afternoon I went back to the dealer here and I told him about it as they have done all of the instalations in my car.

This piece act like earthing the whole car and also as a redials.

This is on my big 4 wheel drive car, In my small 911 which I bought only 3 months back never had a problem with the sort of noise I am getting in this car, in the 911 I use the GT-975D and it is all ok.


Please check on this piece my friend

My best regards to you

....This is totally off topic but what 911 did you buy? I'm a huge Porsche fanatic and my father owns three, a 1979 911SC, a 1983 928S and a 1985 928S and all 3 are fantastic.

[KI6NNO]

Thank you for that, Rasheed.

It makes sense then that since the MAT50 is acting like a radial that it would need to be "tuned" for 6M (although I still don't understand why two of them can't be used - maybe it's a capacitance thing... just a guess).

I owned a 911 (996) myself for a number of years and the only thing the paint saw was the washing, wax, a terry cloth, and the occasional buffer. hihi

It was by far the best car I have owned and I couldn't imagine putting an antenna on it.

It's a different story for my truck - the F150 has two antennas.
In any case, if I have a vehicle grounding problem that can't be solved the usual way, knowing that the MAT50 is out there to consider would be very useful to me. Thank you for sharing this.

73, Dave

[A71AN]

....This is totally off topic but what 911 did you buy? I'm a huge Porsche fanatic and my father owns three, a 1979 911SC, a 1983 928S and a 1985 928S and all 3 are fantastic.

Thanks my friend, mine is 911 Carrera S 2008.
I been attached to mobile for ages now and I used HF radios in all of my cars.


Thank you and 73 my friend

[A71AN]

Thank you for that, Rasheed.

It makes sense then that since the MAT50 is acting like a radial that it would need to be "tuned" for 6M (although I still don't understand why two of them can't be used - maybe it's a capacitance thing... just a guess).

I owned a 911 (996) myself for a number of years and the only thing the paint saw was the washing, wax, a terry cloth, and the occasional buffer. hihi

It was by far the best car I have owned and I couldn't imagine putting an antenna on it.

It's a different story for my truck - the F150 has two antennas.
In any case, if I have a vehicle grounding problem that can't be solved the usual way, knowing that the MAT50 is out there to consider would be very useful to me. Thank you for sharing this.

73, Dave

I always loved VXR 4 wheel drive, I have one now and it is a real good one on the sand, but because now a days I go out up north with all of the A7 group and they drive GMC pickups, I had to order one in order to have more place for my electrical generator, ice box and my bed, that why I have order the high siera antenna to attach to this car.

This piece is ok yo to 7mhz, but for 3.5mhz you need 2 of them, this is whats written on the site if you could check out, I will give more try tomorrow as all of the A7 driving up north and staying for the week end, operating mobile and portable.


Thank you again my friend and 73 from Qatar