Re: VHF Remote Radio Questions
- From: Kitchen Man <nannerbac@xxxxxxxxx>
- Date: Sun, 31 Jul 2005 20:09:16 -0700
On Sat, 30 Jul 2005 18:51:54 +0100, Fred Abse
<excretatauris@xxxxxxxxxxxxxxxxx> wrote:
>On Fri, 29 Jul 2005 19:07:00 -0700, Kitchen Man wrote:
>
>> I want to move a base station of a mobile radio system to a remote
>> location where I hope to get better coverage, but I want to keep the
>> mic and channel control in the present location. I have access to
>> either an RS-232 or a DS0 line, whichever I wish to use, and the line
>> length is less than 10 miles. The frequencies are currently allocated
>> and on the air, so there are no problems with the bureaucracy.
>
>I think you'll find that the base station location is specified on the
>license. I don't think there's a jurisdiction in the world that will let
>you relocate without proper authorization. It's all part of frequency
>use planning. They might well want a frequency change for the new location.
Thanks for your concern, but I believe I mentioned that any
bureaucratic hurdles should not be a problem.
> I have
>> been researching VHF modems, but am unclear about design applications.
>> Our present transmitter is operating at 50W. I was hoping for a
>> little insight about how to go about setting up this system, and
>> possibly some recommendations about what equipment offers the best
>> option for implementing this type of a setup. I need to implement a
>> selectable two-channel system. Thanks for your time and suggestions.
>
>You need a leased voice frequency line, a proper controller at the office
>end, and proper remote interface equipment at the base station end.
>Alternatively, you might use a UHF or microwave link. This all needs
>approved equipment and is pretty damn' expensive.
As I mentioned, I can use either a DS0 or an RS-232 line, both of
which exist and are available for the project. Microwave and UHF are
out, as there is no line of sight. This is why I did not mention
those alternatives. "Proper" equipment is the reason I made the post;
I was hoping someone with specific knowledge could point me to same.
>If you need to ask these questions, it suggests to me that you don't know
>enough about what you're trying to do to be competent, or legally
>authorized.
Your answers suggest to me that you would rather preach than offer
assistance. Have you never met an engineer who needed help with a
technical task? The fact that I need to ask these questions only
points out a lack of specific familiarity with specific equipment.
>Consult a properly licensed engineer with the proper knowledge and test
>equipment.
All's well. I believe that I have dreamed up a solution while camping
out this weekend. Kind of how a properly licensed engineer might
solve a problem - throw out feelers for suggestions, then ponder the
problem while relaxing a bit on holiday. The fending off of
unconstructive criticisms is all part of the day's work, I suppose.
Thanks anyway. Oh, and I do have a bit of TE lying about. No
worries, mate.
.
- Follow-Ups:
- Re: VHF Remote Radio Questions
- From: Don Bowey
- Re: VHF Remote Radio Questions
- Prev by Date: Re: switching circuit with multiple power sources
- Next by Date: Re: switching circuit with multiple power sources
- Previous by thread: Air conditioner contactor snubber.
- Next by thread: Re: VHF Remote Radio Questions
- Index(es):
Relevant Pages
|
