: Wednesday, June 02, 2010 10:12 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Antenna separation question
Thansk for the input. That is almost exactly what I'm going to put on
the air as far as cans go. I'll have a Hamtronics exciter and receiver
amped up by
A local tried that years ago. It works, sometimes.
You have to be very careful about passive intermod.
But nothing helps if you don't do the math...
Like 147.03 transmit and 441.075 or 447.100 receive...
Mike WA6ILQ
At 10:12 AM 06/02/10, you wrote:
>Thansk for the input. That is almost exactly w
Thansk for the input. That is almost exactly what I'm going to put on the air
as far as cans go. I'll have a Hamtronics exciter and receiver amped up by a
110 Watt Micor base amplifier. Just about the same heights too. Antennas are
both staion masters. but I like knowing that what I have been th
I would look for some of the 12" VHF pass cans. You want the true pass cavities
that have two connectors. Motorola, GE, DB Products and possibly others made
them. They show up surplus every so often and for a 600 KHz close spaced 2
Meter repeater they really shine.
>From past experience with a
A word of caution - your results may vary from the next guy's installation.
There are a lot of variables. Receiver front end rejection being one of
them.
Chuck
WB2EDV
- Original Message -
>
> Ok, so that calls for a mast of at least 30 feet to put the RX antenna on
> top and the TX
--- In Repeater-Builder@yahoogroups.com, Joe wrote:
>
> Rule of thumb is that you need at least 10 times the distance of
> vertical spacing if you use horizontal spacing. In other words, 15 feet
> of vertical spacing is equal to 150 feet of horizontal spacing.
>
> Joe
>
> agrimm0034 wrote:
>
Rule of thumb is that you need at least 10 times the distance of
vertical spacing if you use horizontal spacing. In other words, 15 feet
of vertical spacing is equal to 150 feet of horizontal spacing.
Joe
agrimm0034 wrote:
> I am currently using the same setup. I have 40 watts output on my GMR
I am currently using the same setup. I have 40 watts output on my GMRS repeater
and I have had them as close as 15 ft vertically separated and have had no
problem. Now if you want to go as far as horizontal separation, you'll be
stretching them apart quite far. I recommend going vertical though.
> "Gary Schafer" <[EMAIL PROTECTED]> wrote:
> I am rather new to this group and maybe shouldn't be critical
> of anything on the site at this stage but here it goes anyway.
Hi Gary, The read deal is what we want (most of the time)... so
pointing out a problem a fly in the soup is "a good thing"
I do not need to talk long distances, only in this one canyon. Thus
the reason for the mobile antenna setup as a base antenna. It looks
like I need to buy a duplexer for 2 meters and be done with it. I am
on a tight budget - like most everyone else - and trying to keep the
cost down. I am not
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