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Subject:
From:
Ashley Bernard <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Mon, 1 Dec 2014 07:37:04 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (208 lines)
your message cut off for some weird reason. an inexpensive mobile for…?
what about inexpensive mobiles? suggestions? I need a decent level of accessibility, at least for the buttons to make some kind of sound.
73
kc1cps


> On Dec 1, 2014, at 7:33 AM, John Miller <[log in to unmask]> wrote:
> 
> I would just go the mobile route if I were you. No point spending as much on 
> an amplifier as you can get an inexpensive mobile for.
> ----- Original Message ----- 
> From: "Ashley Bernard" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, December 01, 2014 6:20 AM
> Subject: Re: power amplifiers
> 
> 
>> This is great information. I=E2=80=99m starting to wonder with all the =
>> fuss and expense to get this to work if I might just be better off =
>> biting the bullet and putting the money into a mobile haha. After all =
>> that=E2=80=99s essentially what I=E2=80=99m trying to accomplish is =
>> mobile radio-like capabilities.
>>> On Nov 30, 2014, at 6:36 PM, Colin McDonald <[log in to unmask]> =
>> wrote:
>>> =20
>>> Ok.
>>> So, you want to have the least amount of adapters in the signal path =
>> because=20
>>> 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=20
>>> jumper cable, a length of your choosing, with an SMA male on one end, =
>> and a=20
>>> BNC male on the other.  If the Mirage amp has an so239/UHF Female =
>> connecter=20
>>> for the input, you want to have a coax jumper with an SMA male for the =
>> radio=20
>>> 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=20
>>> amp is an so239 connecter, so the pl259 that is on the end of the =
>> antenna=20
>>> 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=20
>>> have it made from RG174 coax.  This coax cable is thin and flexible =
>> and will=20
>>> yield little loss over 3 feet.
>>> Also, a thinner coax cable like rg174 will put allot less strain on =
>> the=20
>>> radios SMA connecter...a well known problem with the SMA connecters on =
>> the=20
>>> TH F6A is that they tend to break inside if allot of strain is put on =
>> them=20
>>> over a period of time...IE a thicker stiffer piece of coax with an =
>> adapter=20
>>> on it...
>>> =20
>>> Hope that helps
>>> =20
>>> 73
>>> Colin, V A6BKX
>>> -----Original Message-----=20
>>> From: Ashley Bernard
>>> Sent: Sunday, November 30, 2014 4:24 PM
>>> To: [log in to unmask]
>>> Subject: Re: power amplifiers
>>> =20
>>> I have an adapter that goes on the end of the cable so it can hook =
>> into =3D
>>> the SMA port.
>>>> On Nov 30, 2014, at 6:21 PM, Colin McDonald <[log in to unmask]> =
>> =3D
>>> wrote:
>>>> =3D20
>>>> so are you using some kind of adapter to go from the SMA female =3D
>>> connecter on=3D20
>>>> the radio itself to the connecter on the end of the coax of the =3D
>>> antenna?
>>>> Or does the antenna coax have an SMA male on it already?  I ask =3D
>>> because you=3D20
>>>> can buy mag mounts with either an SMA male, or a pl259 =3D
>>> connecter...anyway,=3D20
>>>> you'll have to determine what you have and the type of jumper cable =3D=
>> 
>>> you'll=3D20
>>>> need.
>>>> =3D20
>>>> 73
>>>> Colin, V A6BKX
>>>> -----Original Message-----=3D20
>>>> From: Ashley Bernard
>>>> Sent: Sunday, November 30, 2014 11:50 AM
>>>> To: [log in to unmask]
>>>> Subject: Re: power amplifiers
>>>> =3D20
>>>> Thanks. This is good info. that is indeed the amplifier =
>> I=3D3DE2=3D3D80=3D3D99=3D
>>> m =3D3D
>>>> looking at. my primary radio is a kenwood thf6a. My antenna is =
>> mounted =3D
>>> =3D3D
>>>> on a high shelf near the window.
>>>> Thanks.
>>>> Ashley
>>>> =3D20
>>>> =3D20
>>>>> On Nov 30, 2014, at 1:45 PM, Colin McDonald <[log in to unmask]> =
>> =3D
>>> =3D3D
>>>> wrote:
>>>>> =3D3D20
>>>>> 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 =
>> =3D3D=3D
>>> =20
>>>> the amp.=3D3D20
>>>>> Also, check out what kind of connecters are on the amp so you can =
>> =3D3D
>>>> order the=3D3D20
>>>>> correct ends on the jumper cable for your HT and the amp's =
>> input=3D3D20
>>>>> connecter...as well as to connect your antenna.
>>>>> It doesn't indicate on the Mirage sight, at least not in the =
>> brief=3D3D20=3D
>>> =20
>>>>> description, what type of connecters are used for the input and =3D3D
>>>> outputs on=3D3D20
>>>>> 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 =3D3D
>>>> perhaps let=3D3D20
>>>>> us know and then me or someone can let you know exactly what coax =
>> =3D3D
>>>> jumper,=3D3D20
>>>>> and cable ends you will need to hook everything up.
>>>>> I agree though, that if you are using a magnetic mount antenna =3D3D
>>>> indoors, that=3D3D20
>>>>> 45 watts output may be asking for trouble with both RFI issues, as =
>> =3D3D
>>>> well as=3D3D20
>>>>> safety issues being in close proximity to the radiating element.
>>>>> Though, that said, many people use 45 or 50 watts in a mobile with =3D=
>> 
>>> the=3D3D20=3D3D
>>>> =3D20
>>>>> antenna sitting on the roof of their vehicle 6 inches from their =3D
>>> head, =3D3D
>>>> so=3D3D20
>>>>> it's probably not that big a deal.
>>>>> Also, if you are using an indoor antenna, jumping to 45 watts may =
>> not =3D
>>> =3D3D
>>>> yield=3D3D20
>>>>> the results you want, IE, getting into more distant repeaters or =3D3D=
>> 
>>>> getting a=3D3D20
>>>>> significantly better signal into the repeaters you already get into.
>>>>> You are dealing with allot of RF blockage inside a dorm building =3D
>>> and=3D3D20=3D3D
>>>> =3D20
>>>>> sometimes increasing power doesn't fix the problem of poor signals =
>> =3D3D
>>>> into the=3D3D20
>>>>> repeater.
>>>>> It may help a little, and if your antenna is near a window that =
>> faces =3D
>>> =3D3D
>>>> the=3D3D20
>>>>> repeater you wish to get into more strongly, then the jump in power =
>> =3D3D=3D
>>> =20
>>>> will=3D3D20
>>>>> help.
>>>>> Just a couple things to consider is all.
>>>>> =3D3D20
>>>>> 73
>>>>> Colin, V A6BKX
>>>>> -----Original Message-----=3D3D20
>>>>> From: Ashley Bernard
>>>>> Sent: Sunday, November 30, 2014 5:41 AM
>>>>> To: [log in to unmask]
>>>>> Subject: power amplifiers
>>>>> =3D3D20
>>>>> so, midst the chaos of after thanksgiving shopping, =3D
>>> I=3D3D3DE2=3D3D3D80=3D3D3D99ve =3D3D
>>>> =3D3D3D
>>>>> stumbled upon a power amplifier online. My only question is do I =
>> need =3D
>>> =3D3D
>>>> =3D3D3D
>>>>> other devices to make this work? Of course I =
>> can=3D3D3DE2=3D3D3D80=3D3D3D99t =3D
>>> =3D3D
>>>> exactly look =3D3D3D
>>>>> at the setup figure to understand what I need to connect to =
>> what.=3D3D20
>>>>> I=3D3D3DE2=3D3D3D80=3D3D3D99=3D3D3D
>>>>> m guessing I need a power supply and a second line of coax besides =
>> =3D3D
>>>> that =3D3D3D
>>>>> from the antenna to the radio?
>>>>> The power amplifier I=3D3D3DE2=3D3D3D80=3D3D3D99m looking into is =
>> the =3D
>>> mirage b35.
>>>>> Thanks.
>>>>> Ashley KC1CPS=3D3D3D=3D3D20=3D20=20 

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