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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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 Posted: Sun Apr 06, 2014 6:24 pm Post subject: radios |
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In the real world with a good, properly installed antenna, you and ATC
will not notice the difference between 6 watts and 10 watts.
Most of the old KX 170 and 155 series radios as well as the Narco Mk 12
series were in the 7-8 watt range.
To really see a performance difference you need to step up to the 16-20
watt output, and unless you fly in the flight levels is pretty hard to
justify the cost.
On 4/6/2014 6:28 PM, Gary Bennett wrote:
| Quote: |
The unit in question is the Garmin GPS 400W (at) $ 3,995. It does NOT include
NAV/COM. So add another $4,495 to that for a NAV/COM unit and now you are in
GTN 650 territory. Yes, Dynon offers a COM unit (as does AFS and others) but
they tend to be 6 WATT transmitters compared to the 10 WATT (16 optional)
Garmin offering. Adding a NAV radio means sticking with the big-name brands
and price-tag.
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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD |
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stein(at)steinair.com
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| Posted: Sun Apr 06, 2014 7:30 pm Post subject: radios |
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That is definatley true. At the frequncies and levels we are talking about, the differences aren't exactly linear...meaning that a 40% increase in wattage doesn't necessarily and automatically equate to a 40% increase in perceived or real performance. That said, the higher power radio will often "step on" the lower powered one in some instances. There are a lot more variables that affect radio quality than pure wattage. I've seen some panel mounted 5W handhelds with and exceptionally good installation outperform a poorly installed 10W radio. Again, just a lot of variables that don't make things an absolute!
Cheers,
Stein
On Sunday, April 6, 2014, Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)> wrote:
[quote] --> RV10-List message posted by: Kelly McMullen <kellym(at)aviating.com>
In the real world with a good, properly installed antenna, you and ATC will not notice the difference between 6 watts and 10 watts.
Most of the old KX 170 and 155 series radios as well as the Narco Mk 12 series were in the 7-8 watt range.
To really see a performance difference you need to step up to the 16-20 watt output, and unless you fly in the flight levels is pretty hard to justify the cost.
On 4/6/2014 6:28 PM, Gary Bennett wrote:
| Quote: | --> RV10-List message posted by: "Gary Bennett" <gary(at)bendun.net>
The unit in question is the Garmin GPS 400W (at) $ 3,995. It does NOT include
NAV/COM. So add another $4,495 to that for a NAV/COM unit and now you are in
GTN 650 territory. Yes, Dynon offers a COM unit (as does AFS and others) but
they tend to be 6 WATT transmitters compared to the 10 WATT (16 optional)
Garmin offering. Adding a NAV radio means sticking with the big-name brands
and price-tag.
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