Today's Message Index:
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1. 07:14 AM - unsuscribe (Gustavo Sessarego)
2. 10:21 AM - europa wooden fuselage dolly spare (Rowland Carson)
3. 11:26 AM - Re: RG393 coax (Greg Fuchs)
4. 02:38 PM - Re: RG393 coax (Fred Klein)
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Message 2
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| Subject: | europa wooden fuselage dolly spare |
I have today fitted my Europa fuselage to the steel dolly that came as part of
the one-man-rigging kit with my trailer from Roger Huttlestone.
That means the wooden dolly Ive been using for some time to support the fuselage
is now surplus to requirements. Its made from an old door, with some wedges
fitted to each end that very roughly conform to the fuselage shape, and 4 castors
underneath. I was about to take the castors off and toss the rest in the timber
recycling skip, but it occurs to me that maybe someone else might have a
use for it.
If anyone within hailing distance of Gloucestershire (thats in England!) has a
need for such a dolly, and the means to take it home, please contact me ASAP to
make arrangements for collection.
You can see it in use on my website journal at (among other places):
http://www.rowlandcarson.org.uk/aviation/europa_435/top_bonding.php
and it appears in the background here:
http://www.rowlandcarson.org.uk/aviation/europa_435/upside_down.php
The 2 holes in the door are to clear, and provide access to, the water drains fitted
to the tank outlets, which just protrude below the fuselage surface.
If I dont get a request in the next week or so, Ill revert to plan A (recycling).
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
| Skype, Twitter: rowland_carson Facebook: Rowland Carson
| pictures: http://picasaweb.google.com/rowlandcarson
Message 3
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Fred,
FWIW, I am using RG58 for all com purposes. Should be perfectly adequate as
long as its kept in good shape. Its light and cheap, so it can be easily
replaced someday.
The XPNDR will have a better quality cable, but haven't got it yet. Maybe
there is a avionics shop around that you can find to be able to buy the
better stuff by the foot without going the $689.00 route? Thats ridiculus!
I've had food that's hard to swallow, that stuff makes one want to choke. I
would try to keep the RG400 to less than 8' 4" just to save the expense.
There is a avionics shop not too far from me, if you'd like I can check on
the cable cost/availability of RG400 or RG393 if you'd like. I am pretty
sure they sell by the foot, as I've already bought a bunch of RG58 bulk from
them that way. I could ship it to you, if the numbers come out.
Regards,
Greg
_____
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Fred Klein
Sent: Wednesday, October 15, 2014 4:47 PM
Subject: Europa-List: RG393 coax
All,
In my as-yet-non-airworthy Europa, I'm about to replace the RG58 coax
originally installed for COM and XPNDR antennas. Both my newly purchased COM
and (mode "S") XPNDR are part of the Dynon SkyView suite. Dynon sez the
RG58.though perhaps adequate for the COM...will be very unsatisfactory for
the XPNDR, and the folks there refer me to "Antenna Cable", p. 230, (chap
11-p.12) in the SkyView installation guide where various coax cables are
considered.
(I cannot seem to include a link to the SkyView Installation Guide)
On p. 231, (chap.11-p.13) there is a chart which appears to state that RG400
(M17/128) is fine IF its length is less than 8'-4". I find that this M17/128
is the spec. for the RG400 sold by suppliers like Aircraft Spruce, SteinAir,
and B & C.
The chart also lists an RG304 for lengths up to 12'6", and RG393 for lengths
up to 17'-3".
There is also a link below the chart to manufacturer's data which is more
specific.there is clearly a special realm reserved for coax cables.
I've located a source for the RG393 where I can buy a minimum of 100 feet at
$6.89/ft.and I'm having trouble swallowing.
I'm skeptical of the notion that SkyView customers are using coax other than
the widely available RG400 (M17-128), and I'm VERY reluctant to spring for
this RG393. I do intend to replace ALL of my RG58.
Can someone who has some keen knowledge on this subject give me some
guidance?
.with appreciation,
Fred
Message 4
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On Oct 16, 2014, at 11:24 AM, Greg Fuchs <gregoryf.flyboy@comcast.net>
wrote:
> Fred,
> FWIW, I am using RG58 for all com purposes. Should be perfectly
adequate as long as its kept in good shape. Its light and cheap, so it
can be easily replaced someday.
> The XPNDR will have a better quality cable, but haven't got it yet.
Maybe there is a avionics shop around that you can find to be able to
buy the better stuff by the foot without going the $689.00 route? Thats
ridiculus! I've had food that's hard to swallow, that stuff makes one
want to choke. I would try to keep the RG400 to less than 8' 4" just to
save the expense.
Thanks Greg=85as for the RG393, Bob Nuckolls @ AeroElectric had this to
say:
> Who ever called out RG-393 for a general aviation
> antenna installation should be banished for 30 days
> to eat lunch at McDonalds. This stuff has a 10AWG
> center conductor and an outside diameter of 0.4"
>
> If the coax was FREE, you'd still have to find connectors
> and tools to install them . . . lots of $thrashing$ around
> just to get 1db of loss in a 10' run at GPS frequencies.
I=92m going to order some RG400 (M17/128) for my XPNDR=85and
keep it in the raceway alongside the 4AWG feeders to keep the run as
short as possible. In doing so, I am relying on my memory of an older
post of Bob=92s which stated, if I recall correctly, that there is NO
EVIDENCE of coax performance being compromised by adjacency to 12v power
feeders. (Nuckolls has confirmed that this is correct.)
And since my set up allows for swapping out the RG58 for my COM
antenna anytime, I think I may just leave it in for now and replace it
w/ RG400 only if problems show up.
I=92m having one of those days where I say, =93=85screw it=85I
want to get this puppy airborne=85=94
Fred
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