Ok.
So, you want to have the least amount of adapters in the signal path because
each time you introduce an adapter, you lose RF power.
If the Mirage bd-35 has a BNC connecter on the input, you want to get a coax
jumper cable, a length of your choosing, with an SMA male on one end, and a
BNC male on the other. If the Mirage amp has an so239/UHF Female connecter
for the input, you want to have a coax jumper with an SMA male for the radio
end, and a PL259 or UHF male on the other end.
I am going to make an educated guess and say that the antenna jack on the
amp is an so239 connecter, so the pl259 that is on the end of the antenna
coax will fit without any adapter.
If I were you, I'd try to find a piece of jumper coax, about 3 feet long and
have it made from RG174 coax. This coax cable is thin and flexible and will
yield little loss over 3 feet.
Also, a thinner coax cable like rg174 will put allot less strain on the
radios SMA connecter...a well known problem with the SMA connecters on the
TH F6A is that they tend to break inside if allot of strain is put on them
over a period of time...IE a thicker stiffer piece of coax with an adapter
on it...
Hope that helps
73
Colin, V A6BKX
-----Original Message-----
From: Ashley Bernard
Sent: Sunday, November 30, 2014 4:24 PM
To: [log in to unmask]
Subject: Re: power amplifiers
I have an adapter that goes on the end of the cable so it can hook into =
the SMA port.
> On Nov 30, 2014, at 6:21 PM, Colin McDonald <[log in to unmask]> =
wrote:
>=20
> so are you using some kind of adapter to go from the SMA female =
connecter on=20
> the radio itself to the connecter on the end of the coax of the =
antenna?
> Or does the antenna coax have an SMA male on it already? I ask =
because you=20
> can buy mag mounts with either an SMA male, or a pl259 =
connecter...anyway,=20
> you'll have to determine what you have and the type of jumper cable =
you'll=20
> need.
>=20
> 73
> Colin, V A6BKX
> -----Original Message-----=20
> From: Ashley Bernard
> Sent: Sunday, November 30, 2014 11:50 AM
> To: [log in to unmask]
> Subject: Re: power amplifiers
>=20
> Thanks. This is good info. that is indeed the amplifier I=3DE2=3D80=3D99=
m =3D
> looking at. my primary radio is a kenwood thf6a. My antenna is mounted =
=3D
> on a high shelf near the window.
> Thanks.
> Ashley
>=20
>=20
>> On Nov 30, 2014, at 1:45 PM, Colin McDonald <[log in to unmask]> =
=3D
> wrote:
>> =3D20
>> is this the mirage BD-35 dual band amp listed for $199?
>> You need a power supply and a jumper cable to go from your radio to =3D=
> the amp.=3D20
>> Also, check out what kind of connecters are on the amp so you can =3D
> order the=3D20
>> correct ends on the jumper cable for your HT and the amp's input=3D20
>> connecter...as well as to connect your antenna.
>> It doesn't indicate on the Mirage sight, at least not in the brief=3D20=
>> description, what type of connecters are used for the input and =3D
> outputs on=3D20
>> the amp itself.
>> They are either BNC or so239 also known as UHF female connecters.
>> I don't recall exactly what antenna and radio you are using, so =3D
> perhaps let=3D20
>> us know and then me or someone can let you know exactly what coax =3D
> jumper,=3D20
>> and cable ends you will need to hook everything up.
>> I agree though, that if you are using a magnetic mount antenna =3D
> indoors, that=3D20
>> 45 watts output may be asking for trouble with both RFI issues, as =3D
> well as=3D20
>> safety issues being in close proximity to the radiating element.
>> Though, that said, many people use 45 or 50 watts in a mobile with =
the=3D20=3D
>=20
>> antenna sitting on the roof of their vehicle 6 inches from their =
head, =3D
> so=3D20
>> it's probably not that big a deal.
>> Also, if you are using an indoor antenna, jumping to 45 watts may not =
=3D
> yield=3D20
>> the results you want, IE, getting into more distant repeaters or =3D
> getting a=3D20
>> significantly better signal into the repeaters you already get into.
>> You are dealing with allot of RF blockage inside a dorm building =
and=3D20=3D
>=20
>> sometimes increasing power doesn't fix the problem of poor signals =3D
> into the=3D20
>> repeater.
>> It may help a little, and if your antenna is near a window that faces =
=3D
> the=3D20
>> repeater you wish to get into more strongly, then the jump in power =3D=
> will=3D20
>> help.
>> Just a couple things to consider is all.
>> =3D20
>> 73
>> Colin, V A6BKX
>> -----Original Message-----=3D20
>> From: Ashley Bernard
>> Sent: Sunday, November 30, 2014 5:41 AM
>> To: [log in to unmask]
>> Subject: power amplifiers
>> =3D20
>> so, midst the chaos of after thanksgiving shopping, =
I=3D3DE2=3D3D80=3D3D99ve =3D
> =3D3D
>> stumbled upon a power amplifier online. My only question is do I need =
=3D
> =3D3D
>> other devices to make this work? Of course I can=3D3DE2=3D3D80=3D3D99t =
=3D
> exactly look =3D3D
>> at the setup figure to understand what I need to connect to what.=3D20
>> I=3D3DE2=3D3D80=3D3D99=3D3D
>> m guessing I need a power supply and a second line of coax besides =3D
> that =3D3D
>> from the antenna to the radio?
>> The power amplifier I=3D3DE2=3D3D80=3D3D99m looking into is the =
mirage b35.
>> Thanks.
>> Ashley KC1CPS=3D3D=3D20=20
|
