For C to F, or F to C, I take advantage of the fact that F = C at -40°.
For a quick seat-of-the-pants conversion, you can add 40 to either,
divide by 2 (going from F to C), or multiply by 2 (going from C to F),
and subtract 40.
Example: 50° F ::: ( (50 + 40)/2 ) - 40 = 5
That's off by 5 degrees, but it's quick and dirty, and close enough when
you're checking the weather. If you want it more accurate, instead of
multiplying or dividing by 2, use the actual ratio of 9/5 or 5/9.
bp
<part15sbs{at}gmail{dot}com>
On 7/22/2016 10:20 AM, ch...@wbmfg.com wrote:
2.54
3.28
.621
I use these factors almost every day. I would hope most folks have
them memorized.
231 is a bit more obscure (cubic inches per gallon)
I still have a hard time doing the F to C. I know the ratio is 9/5 -
5/9 but the add/subtract 32 bit before/after the conversion is
something I have to futz with.
Normally I use a known conversion like 20-68 degrees and then play
with the formula until it yields the correct answer and then I know it
for a few minutes until the next time.
*From:* Ken Hohhof <mailto:af...@kwisp.com>
*Sent:* Friday, July 22, 2016 11:10 AM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] Metrolinq
I just bought a set of 225/55R18 tires. Talk about mixed units.
225mm, 55%, 18in.
*From:* Josh Luthman <mailto:j...@imaginenetworksllc.com>
*Sent:* Friday, July 22, 2016 11:44 AM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] Metrolinq
Exactly. Problem solved if we just use 'merican units. Damn metric
destroyed our equipment.
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On Fri, Jul 22, 2016 at 12:40 PM, Jaime Solorza
<losguyswirel...@gmail.com <mailto:losguyswirel...@gmail.com>> wrote:
I guess California isn't part of USA ese Holmes? Meters to feet
mistake crashed a probe on Mars.... Math is supposed to be
international.... Oh well ...
On Jul 22, 2016 10:31 AM, "Josh Luthman"
<j...@imaginenetworksllc.com <mailto:j...@imaginenetworksllc.com>>
wrote:
It's cool, I figure you're from one of those countries that
haven't been to the moon.
Josh Luthman
Office: 937-552-2340 <tel:937-552-2340>
Direct: 937-552-2343 <tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
On Fri, Jul 22, 2016 at 12:28 PM, Harold Bledsoe
<hbledso...@gmail.com <mailto:hbledso...@gmail.com>> wrote:
LOL! Stefan does! ;-)
Thanks for the 'merica units help.
On Fri, Jul 22, 2016 at 12:19 PM Josh Luthman
<j...@imaginenetworksllc.com
<mailto:j...@imaginenetworksllc.com>> wrote:
45 and 125 mph. No one knows what you're talking
about with the meaters.
Josh Luthman
Office: 937-552-2340 <tel:937-552-2340>
Direct: 937-552-2343 <tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
On Fri, Jul 22, 2016 at 12:12 PM, Harold Bledsoe
<hbledso...@gmail.com <mailto:hbledso...@gmail.com>>
wrote:
It's actually fairly forgiving. Our 1.1km link
has not lost connection from wind at all and it
has been up above 70kph. The standard and LR
brackets are both tested to 200kph for your
reference.
Thanks,
-Hal
On Fri, Jul 22, 2016 at 7:53 AM Stefan Englhardt
<s...@genias.net <mailto:s...@genias.net>> wrote:
We are planning to use them on 10-12m steel
poles. The poles are very solid built and with
a concrete
<http://www.dict.cc/englisch-deutsch/concrete.html>
foundation
<http://www.dict.cc/englisch-deutsch/foundation.html>
but they might sway a bit due to the length
with heavy wind. Is this critical? Is failover
with 5Ghz fast enough to
overcome short moves?
*Von:*Af [mailto:af-boun...@afmug.com
<mailto:af-boun...@afmug.com>] *Im Auftrag von
*Faisal Imtiaz
*Gesendet:* Donnerstag, 21. Juli 2016 21:34
*An:* af@afmug.com <mailto:af@afmug.com>
*Betreff:* Re: [AFMUG] Metrolinq
So having dealt with multiple links, I can
tell you that if you are missing some db's it
has to do with alignment.
We are seeing -55/-59 on our 450m link
and on our 250m link we are seeing -43/-47
signal (and had to reduce power on 60ghz on
one side.. .i.e. we are not aligned perfectly )
So I can say affirmatively there is no
'missing power' it has to do with alignment...
:)
Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232
<tel:305%20663%205518%20x%20232>
Help-desk: (305)663-5518
<tel:%28305%29663-5518> Option 2 or Email:
supp...@snappytelecom.net
<mailto:supp...@snappytelecom.net>
------------------------------------------------------------------------
*From: *"Stefan Englhardt" <s...@genias.net
<mailto:s...@genias.net>>
*To: *af@afmug.com <mailto:af@afmug.com>
*Sent: *Thursday, July 21, 2016 3:14:16 PM
*Subject: *Re: [AFMUG] Metrolinq
Do you get the calculated rx-power?
*Von:*Af [mailto:af-boun...@afmug.com] *Im
Auftrag von *Faisal Imtiaz
*Gesendet:* Donnerstag, 21. Juli 2016 20:33
*An:* af@afmug.com <mailto:af@afmug.com>
*Betreff:* Re: [AFMUG] Metrolinq
It would be appropriate to point out that
there are two versions or Metrolinq 60ghz
Radios one smaller lower power and other
larger higher power.
We have been using the larger units
(Circular cones) for links 250m to 450m
successfully.. aiming them with the
shipping brackets is a whole another
challenge.. I am very happy to the the LR
brackets available and those should go
long ways is aligning longer links. .
Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232
<tel:305%20663%205518%20x%20232>
Help-desk: (305)663-5518
<tel:%28305%29663-5518> Option 2 or Email:
supp...@snappytelecom.net
<mailto:supp...@snappytelecom.net>
------------------------------------------------------------------------
*From: *"Carl Peterson"
<cpeter...@portnetworks.com
<mailto:cpeter...@portnetworks.com>>
*To: *af@afmug.com <mailto:af@afmug.com>
*Sent: *Thursday, July 21, 2016
11:57:41 AM
*Subject: *Re: [AFMUG] Metrolinq
We haven't had any issues with 5GHz
but the 60GHz side underwhelms. We
tried a 900' link and couldn't get the
60Ghz side to work. We were able to
move one end and get it down to 600'
and have a 60GHz link at -55 but that
is 10-15db below where it should be.
It's working, but at this point I
wouldn't use it for anything over 500'
or so.
On Thu, Jul 21, 2016 at 10:40 AM,
Stefan Englhardt <s...@genias.net
<mailto:s...@genias.net>> wrote:
We’ve only dfs bands in 5 GHz.
Metrolinq supports only the lower
band with lower allowed power (1W
EiRP).
I’ve installed the newest FW
before doing anything so I might
be lucky to avoid the biggest
problems (hopefully).
*Von:*Af
[mailto:af-boun...@afmug.com
<mailto:af-boun...@afmug.com>] *Im
Auftrag von *Faisal Imtiaz
*Gesendet:* Donnerstag, 21. Juli
2016 16:30
*An:* af@afmug.com
<mailto:af@afmug.com>
*Betreff:* Re: [AFMUG] Metrolinq
Interesting.. most folks have the
opposite issue.
FWIW, there is no dfs support on
5ghz (not sure about non-american
rules).
If you are bench testing... you
need to turn down the power on
5ghz .. way down....
Regards
Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232
<tel:305%20663%205518%20x%20232>
Help-desk: (305)663-5518
<tel:%28305%29663-5518> Option 2
or Email:
supp...@snappytelecom.net
<mailto:supp...@snappytelecom.net>
------------------------------------------------------------------------
*From: *"Stefan Englhardt"
<s...@genias.net
<mailto:s...@genias.net>>
*To: *af@afmug.com
<mailto:af@afmug.com>
*Sent: *Thursday, July 21,
2016 8:13:34 AM
*Subject: *[AFMUG] Metrolinq
Got my first links. 60GHz work
fine in lab. The 5GHz Part
does strange things. Does not
initialze or does not connect.
Syslog gives dfs or cant
initialize messages.
60GHz is up immediately und
runs stable in lab. Latency is
low. Feels like a 1G cable
connection. Powered by Netonix
24V.
Takes only 6 Watts. Good build
quality. Webinterface is easy
and fast.
So a cheap option for fast
short hops where you dont want
to dig.
--
Carl Peterson
*PORT NETWORKS*
401 E Pratt St, Ste 2553
Baltimore, MD 21202
(410) 637-3707 <tel:%28410%29%20637-3707>
