Today's Message Index:
----------------------
1. 05:56 AM - Re: Re: Relays (rayj)
2. 09:17 AM - Re: Re: Handheld transceiver alternate antenna (Robert L. Nuckolls, III)
3. 10:47 AM - BMA Powerboard with Z19RB (Hariharan Gopalan)
4. 12:40 PM - Re: Re: Relays (Robert L. Nuckolls, III)
5. 02:10 PM - Re: BMA Powerboard with Z19RB (Robert L. Nuckolls, III)
6. 05:50 PM - Re: BMA Powerboard with Z19RB (Kelly McMullen)
7. 08:26 PM - Re: BMA Powerboard with Z19RB (Hariharan Gopalan)
Message 1
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Larry,
FWIW, I have had the same problem in the past, and found it was
associated with sending or replying to emails with images
embedded/attached to them. Didn't spend the time to find a solution
other than to avoid images, so I can't offer any real solution to the
problem.
do not archive
Raymond Julian
Kettle River, MN
The things we admire in men, kindness and generosity, openness, honesty,
understanding and feeling are the concomitants of failure in our system.
And those traits we detest, sharpness, greed, acquisitiveness, meanness,
egotism and self-interest are the traits of success. And while men
admire the quality of the first they love the produce of the second.
-John Steinbeck, novelist, Nobel laureate (1902-1968)
On 03/30/2015 10:28 PM, LarryRosen wrote:
>
> I will try one more time. Not sure why my message got through without any text.
>
> Putting the signal relay into a backshell seems like an interesting project I
would like to try.
>
>
> Are there any d-sub backshells that are better suited to stuffing the relay into?
> I have looked some electrical catalogs for a mounting bracket like you describe.
I take it it is a roll your own.
> And finally would you solder wire to the relay and use pins into the d-sub?
>
> I will post pictures when I get it done.
> Larry
>
> --------
> Larry Rosen
> #40356
> N205EN (reserved)
> <http>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=440053#440053
>
>
Message 2
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Subject: | Re: Handheld transceiver alternate antenna |
At 11:22 2015-03-30, you wrote:
Found this article in kitplanes archive which describes a $2 antenna diplexer.
http://tinyurl.com/nz6q8qb
This would more properly be called a 'switch', a
system whereby a single antenna may be routed to
any one of two or more transceivers. A 'diplexer'
is a device that allows two activities to share a
single resource. WAyyyy back when, television receivers
had both UHF and VHF antenna terminals on the back.
One was expected to have both UHF and VHF antennas
on the roof with separate feed lines brought into
the house. A 'diplexer' would combine two signals from
separate antennas for transport into the house on one
feed line. A similar device was hooked up in reverse
at the receiver to feed UHF and VHF signals to their
respective inputs.
Sony EAC-DD1 SAT/VHF/UHF Diplexer
MT-1006 300-Ohm Input to 75 & 300-Ohm Output VHF/UHF/FM An
Later on, wide band tuners would accept UHF and VHF
signals into a single antenna jack . . .but a diplexer
was still a useful thing to use for combining the
two spectrums into one feed line on the roof.
A duplexer is a bit more sophisticated. It's generally
used to allow simultaneous use of a single feed line
for both receive and transmit. Repeaters of
all stripe will make good use of a duplexer to
watch a single antenna and feed line for
sub-microvolt signals coming down then separating
that signal out to a receiver while simultaneously
allowing a 100 watt transmitter to squirt a signal
up the same feed line to the same antenna.
TX RX VARI-NOTCH VHF DUPLEXER 144-174 MHz Model 28-37-06C HAM R
Real magic stuff. I've tuned dozens of such devices
and built a few for both commercial and amateur
radio applications. They save you a lot of money
for feed lines and antennas when your antenna
site is hundreds to perhaps a thousand feet
up the side of a tower. But they can be a 'horsy'
beast. The legacy duplexer for 146Mhz was 4 to
8 "stove pipes" about 20" tall.
UHF duplexers are proportionately smaller but still
substantial pieces of equipment.
There is good application for a diplexer/spltter in aircraft
where a single VHF VOR antenna can be pressed into
service to drive either multiple VOR receivers or
even multiple GlideSlope receivers.
Avionics Antenna Comant Dual VOR / Glide Slope Splitter, P/N CI
What good man Jim has described in his article
is a clone (along with evaluation of performance)
of the Icom hand-held antenna jack and SWITCH
that we discussed earlier in this thread and
at some length years ago.
Emacs!
^^^^ Icom Product ^^^^
Emacs!
^^^^ AEC DIY project ^^^^
Bob . . .
Message 3
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Subject: | BMA Powerboard with Z19RB |
Hello Group
I happen to acquire a Blue Mountain Avionics Powerboard along with an EFIS
purchase and contemplating incorporating this in the Z19RB on my Bearhawk.
The Powerboard came with lighted switches and seems to make the wiring
process simpler, hence the inclination to use it. Wondering if the
powerboard adds any value, other than the lighted switch, which I guess I
can add other wise as well, to the electrical system or should I just dump
it and keep it simple with the Z19RB?
Thanks
Hari
Message 4
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At 22:28 2015-03-30, you wrote:
I will try one more time. Not sure why my message got through
without any text.
Putting the signal relay into a backshell seems like an interesting
project I would like to try.
Are there any d-sub backshells that are better suited to stuffing the
relay into?
I have looked some electrical catalogs for a mounting bracket like
you describe.
I take it it is a roll your own. And finally would you solder wire to the relay
and use pins into the d-sub?
Good for you . . .
The legacy DSub shells have internal dimensions
that closely mimic connectors themselves. The D15
backshells I use have internal 'thickness' heights
on the order of 0.45"
The relay you choose must have at least one dimension
equal to or less than the internal height of the shell.
If you like, I can mail you a shell and bracket. The
connectors and hardware are prolific.
Relays too. . . there's probalby 100 parts
in the Digikey catalog suited you task. First
crack at a search
Emacs!
http://tinyurl.com/p3f3cbh
A surface mount version is good . . . you might
have to cut pins off anyhow. Neat doesn't count
Use solder cup connector and 24 or 26 awg wire.
Solid wire is okay . . . after you've check it
for functionality, you'll pot it with hot-glue.
Let me know if you want the parts.
Bob . . .
Message 5
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Subject: | Re: BMA Powerboard with Z19RB |
At 12:46 2015-03-31, you wrote:
Hello Group
I happen to acquire a Blue Mountain Avionics
Powerboard along with an EFIS purchase and
contemplating incorporating this in the Z19RB on
my Bearhawk. The Powerboard came with lighted
switches and seems to make the wiring process
simpler, hence the inclination to use
it. Wondering if the powerboard adds any value,
other than the lighted switch, which I guess I
can add other wise as well, to the electrical
system or should I just dump it and keep it simple with the Z19RB?
Thanks
Hari
Thanks a long story my friend. But first, indulge us a
bit . . . what kind of EFIS system came with the Power
Board? Tell us more about your project:
Engine, fuel system, ignition system, number and sizes
of proposed alternators and how do you plan to use this
airplane? Finally, why Z-19?
Bob . . .
Message 6
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Subject: | Re: BMA Powerboard with Z19RB |
Also be aware that Blue Mountain is long out of business after a number
of very shakey years prior to the collapse.
So anything that is Blue Mountain design will be limited to generic
electronic parts for repair.
On 3/31/2015 2:09 PM, Robert L. Nuckolls, III wrote:
> <nuckolls.bob@aeroelectric.com>
>
> At 12:46 2015-03-31, you wrote:
> Hello Group
>
> I happen to acquire a Blue Mountain Avionics Powerboard along with an
> EFIS purchase and contemplating incorporating this in the Z19RB on my
> Bearhawk. The Powerboard came with lighted switches and seems to make
> the wiring process simpler, hence the inclination to use it.
> Wondering if the powerboard adds any value, other than the lighted
> switch, which I guess I can add other wise as well, to the electrical
> system or should I just dump it and keep it simple with the Z19RB?
>
> Thanks
> Hari
>
> Thanks a long story my friend. But first, indulge us a
> bit . . . what kind of EFIS system came with the Power
> Board? Tell us more about your project:
>
> Engine, fuel system, ignition system, number and sizes
> of proposed alternators and how do you plan to use this
> airplane? Finally, why Z-19?
>
>
> Bob . . .
>
>
Message 7
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Subject: | Re: BMA Powerboard with Z19RB |
Thanks Bob, ever so grateful for such an amazing resource of knowledge and
experience, humbly bow down :)
The project is a 4 place bearhawk with an Eggenfellner 3.0 L Subaru EZ30
fuel injected engine. It has an SDS EFI and one 60A alternator. Since the
engine is an electrically dependent engine, Z19 seemed to be the best.
Though I am not IFR certified, eventually plan to fly IFR.
I am aware that BMA is out of business, but considering the price at which
I bought the package consisting of an 8" EFIS, 5" EFIS, the power board,
auto pilot servos and the engine pod, it made sense in dollar terms to take
a risk. The EFIS was practically new and I bench tested everything. Also,
know of a few people who are happily using the same without any problems
for several years.
Other than the EFIS, I have acquired the following avionics:
1. GTX 330
2. SL30
3. Microair COM (backup)
Eagerly looking forward to words of wisdom from this enlightened group.
Thanks
Hari
On Tue, Mar 31, 2015 at 8:48 PM, Kelly McMullen <kellym@aviating.com> wrote
:
> kellym@aviating.com>
>
> Also be aware that Blue Mountain is long out of business after a number o
f
> very shakey years prior to the collapse.
> So anything that is Blue Mountain design will be limited to generic
> electronic parts for repair.
>
>
> On 3/31/2015 2:09 PM, Robert L. Nuckolls, III wrote:
>
>> nuckolls.bob@aeroelectric.com>
>>
>> At 12:46 2015-03-31, you wrote:
>> Hello Group
>>
>> I happen to acquire a Blue Mountain Avionics Powerboard along with an
>> EFIS purchase and contemplating incorporating this in the Z19RB on my
>> Bearhawk. The Powerboard came with lighted switches and seems to make th
e
>> wiring process simpler, hence the inclination to use it.=C3=82 Wonderin
g if the
>> powerboard adds any value, other than the lighted switch, which I guess
I
>> can add other wise as well, to the electrical system or should I just du
mp
>> it and keep it simple with the Z19RB?
>>
>> Thanks
>> Hari
>>
>> Thanks a long story my friend. But first, indulge us a
>> bit . . . what kind of EFIS system came with the Power
>> Board? Tell us more about your project:
>>
>> Engine, fuel system, ignition system, number and sizes
>> of proposed alternators and how do you plan to use this
>> airplane? Finally, why Z-19?
>>
>>
>>
>>
>> Bob . . .
>>
>>
>>
>>
>>
>>
>
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