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CX2SA > SATDIG 23.01.18 16:45l 936 Lines 28673 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: wx proof ant relay ideas (Norm n3ykf)
2. Exciting Coax (anderson58625)
3. Re: Exciting Coax (Norm n3ykf)
4. L-Band Equipment List (Bill Acito)
5. Re: L-Band Equipment List (Paul Stoetzer)
6. Re: L-Band Equipment List (Edward R Cole)
7. Re: Exciting Coax (Bob- W7LRD)
8. Upcoming ARISS Contact Schedule as of 2018-01-23 06:00 UTC
(aj9n@xxx.xxxx
9. Re: Exciting Coax (Robert Switzer)
10. fox 1b (Nick Pugh)
----------------------------------------------------------------------
Message: 1
Date: Mon, 22 Jan 2018 20:40:21 -0500
From: Norm n3ykf <normanlizeth@xxxxx.xxx>
To: Ted <k7trkradio@xxxxxxx.xxx>
Cc: amsat-bb <amsat-bb@xxxxx.xxx>, pnwvhfs <pnwvhfs@xxxxxxxxxxxx.xxx>
Subject: Re: [amsat-bb] wx proof ant relay ideas
Message-ID:
<CAJUhCTP5U7F9pLJqvD=Z2xss1kXwF8Y8ih2zpvmqo9EjJB_3rg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Upside down 5 gallon pail. Build a bracket to go on the side of the
tower with unistrut (from your fave retailer). A vertical support
panel attaches to this. Whatever needs to stay dry gets screwed to it.
Over the whole mess goes the bucket. Positioned under is the lid. Coax
gets routed up through the lid to your device.
Much more difficult to describe than build. Cost is par with a plastic
box assuming first class build with stainless hardware. Can be done el
cheapo with materials on hand.
Lived in that horrible climate, Florida for 7 years. This method was a
winner. Tried others with varying degrees of success.
Norm n3ykf
On Mon, Jan 22, 2018 at 6:44 PM, Ted <k7trkradio@xxxxxxx.xxx> wrote:
> 'tupper ware' style box and waterproof conduit fittings from Home Depot ??
> (w/drain hole to release moisture)
>
> 73, Ted
> K7TRK
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Bob- W7LRD
> Sent: Monday, January 22, 2018 11:15 AM
> To: amsat-bb; pnwvhfs
> Subject: [amsat-bb] wx proof ant relay ideas
>
> Hi- I'm looking for ideas for wx proofing a tower mounted ant transfer relay
> for 1.2Ghz. I live in Washington, it rains here a "little". What have you
> done?
>
> 73 Bob W7LRD
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to all
> interested persons worldwide without requiring membership. Opinions
> expressed are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 2
Date: Mon, 22 Jan 2018 20:03:32 -0600
From: "anderson58625" <anderson58625@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Exciting Coax
Message-ID: <010d01d393ee$5f5bd630$1e138290$@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Reading the subject line, I may have somehow mixed sarcasm with a potential
pun (eye of the beholder!) <grin>. Sorry for that.
I seek to avoid investing in a set of cable producing hardware (or assembled
cables) which I will regret later. I am hoping to get some guidance
regarding coax for:
1) IF patch between equipment (male-male BNC's)
2) 2m feedline (N-connectors) (<50')
3) 70cm feedline (N-connectors) (<50')
4) A later potential for feedline carrying microwave frequencies
(>1GHz)
The frequency & loss-rate charts for coax are informative, but I'm not sure
I'm seeing which connectors will fit what cable brand/types. With the
variables of loss, dimensions, flexibility, and potential proprietary
crimping systems, etc., I don't have enough experience or information to
confidently make an online materials order. Things were much easier down
here with just HF frequencies, RG-213, and good quality (weather protected)
PL-259's! <grin>
For IF patch cables, I figure these are conveying HF so the cable type/loss
at 1-3' isn't very important. But, there is also shielding: A
consideration?
. Any thoughts on IF cables?
. Plus, I've never attached a BNC to a cable. Easy? Avoid it?
. Plan on a new crimper/die?
. Or, if premade would be cheaper (just a few IF patch cables), any
quality sources to recommend?
For the 2m & 70cm feedlines, I know flexibility may be a consideration on
rotating/elevating masts. Of course, I'm sure a rigid feedline may be
superior elsewhere, but I am not at that point yet. Still, advice on that
subject is gratefully appreciated. I need to provide good questions to hope
for good answers, so what feedline you would recommend for:
. Reasonable flexibility/portability
. 2m-23cm
. Modest power
. <50'
. For use with n-connectors
The benefit of you knowledge and experience is much appreciated.
73
Mark W9AT
------------------------------
Message: 3
Date: Mon, 22 Jan 2018 22:02:48 -0500
From: Norm n3ykf <normanlizeth@xxxxx.xxx>
To: anderson58625 <anderson58625@xxxxx.xxx>
Cc: "<,amsat-bb@xxxxx.xxxxxxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Exciting Coax
Message-ID:
<CAJUhCTPnJ2iSap4ti2KPFn-RHkVx7gFw6FxNeU6KQ6Kudkh_Lw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Mark,
Belden 9913F7 with "clamp" (hand assembled) N connectors would work
for your feedline. If you go this route, MAKE SURE THAT THE CONNECTOR
HAS THE PROPER CENTER PIN FOR 'F7.
RG-142 and hand assembled BNC's would work for the gear interconnect jumpers.
Look on the bay for real Amp connectors. They are cheaper here than at
an online vendor. Finding the right connectors at a hamfest can be
iffy.
RG-142 can be had cheaply on the bay as well.
Higher freqs are best handled by hardline. Small pieces are available
and new, OEM (surplus) connectors are available at reasonable cost.
Closely following the spec sheet for the connector that you're
assembling is critical. I use a copy of the MIL348 standard (for free,
available online) for the dimensions. There's only one that matters,
really for us. How far is the pin recessed. Get that wrong and the pin
will "tulip" the prongs of the female or not make proper contact,
trashing the connectors, your work and introducing a point of failure.
An el cheapo pair of digital calipers (use the depth gauge on the
tongue end) will make short work of this.
Razor blade and sharp scissors make short work of cable prep. A
cassette stripper can help, but I have found is not a one size fits
all fix.
If the sickness bites, a crimper set is a good investment. Making
custom cables for portable gear is a snap. I usually carry a few clamp
connectors in case of failure in the field.
Norm n3ykf
On Mon, Jan 22, 2018 at 9:03 PM, anderson58625 <anderson58625@xxxxx.xxx>
wrote:
> Reading the subject line, I may have somehow mixed sarcasm with a potential
> pun (eye of the beholder!) <grin>. Sorry for that.
>
>
>
> I seek to avoid investing in a set of cable producing hardware (or assembled
> cables) which I will regret later. I am hoping to get some guidance
> regarding coax for:
>
> 1) IF patch between equipment (male-male BNC's)
>
> 2) 2m feedline (N-connectors) (<50')
>
> 3) 70cm feedline (N-connectors) (<50')
>
> 4) A later potential for feedline carrying microwave frequencies
> (>1GHz)
>
>
>
> The frequency & loss-rate charts for coax are informative, but I'm not sure
> I'm seeing which connectors will fit what cable brand/types. With the
> variables of loss, dimensions, flexibility, and potential proprietary
> crimping systems, etc., I don't have enough experience or information to
> confidently make an online materials order. Things were much easier down
> here with just HF frequencies, RG-213, and good quality (weather protected)
> PL-259's! <grin>
>
>
>
> For IF patch cables, I figure these are conveying HF so the cable type/loss
> at 1-3' isn't very important. But, there is also shielding: A
> consideration?
>
> . Any thoughts on IF cables?
>
> . Plus, I've never attached a BNC to a cable. Easy? Avoid it?
>
> . Plan on a new crimper/die?
>
> . Or, if premade would be cheaper (just a few IF patch cables), any
> quality sources to recommend?
>
>
>
> For the 2m & 70cm feedlines, I know flexibility may be a consideration on
> rotating/elevating masts. Of course, I'm sure a rigid feedline may be
> superior elsewhere, but I am not at that point yet. Still, advice on that
> subject is gratefully appreciated. I need to provide good questions to hope
> for good answers, so what feedline you would recommend for:
>
> . Reasonable flexibility/portability
>
> . 2m-23cm
>
> . Modest power
>
> . <50'
>
> . For use with n-connectors
>
>
>
> The benefit of you knowledge and experience is much appreciated.
>
>
>
> 73
>
>
>
> Mark W9AT
>
>
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Mon, 22 Jan 2018 18:32:05 +0000
From: Bill Acito <w1pa@xxxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] L-Band Equipment List
Message-ID:
<FR1P152MB0405CCD86022BC130DE4EC1A98EC0@xxxxxxxxxxxxx.xxxxxxx.xxxx.xxxxxxx.xxx
>
Content-Type: text/plain; charset="utf-8"
If someone puts this into a list, they should be very clear where a
radio requires an optional module (e.g. The? UT-10 for the TS-790 is
nearly un-obtainium).
Also, Didn't I see in passing that testing the L-band uplink indicated
that the radios really should have 5khz tuning steps? Not all of these
rigs can do that.
Bill W1PA
------------------------------
Message: 5
Date: Mon, 22 Jan 2018 23:06:52 -0500
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Bill Acito <w1pa@xxxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] L-Band Equipment List
Message-ID:
<CABzOSOpkD1E74CrGLdSUOpJrqpYANmiHTSsUoXNt_9j36nvfVA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
More experience is necessary to see just how much of a handicap 10 kHz
steps are, but both VE4AMU and KE4AL made QSOs using Kenwood mobiles
limited to 10 kHz steps during the open testing pass over North
America. Of course, if you're too far off frequency to get in due to
the limited steps, you won't have to wait long to be back in! In a 500
km orbit, that Doppler shift is fast!
I understand some older 23 cm radios are limited to 25 kHz steps. You
would likely be very handicapped trying to use one of those. It's an
important issue to research when making a purchasing decision. I was
impressed with the performance of my Alinco DJ-G7T 1 watt HT on TX.
It's just too bad the RX is almost useless for satellite operations!
73,
Paul, N8HM
On Mon, Jan 22, 2018 at 1:32 PM, Bill Acito <w1pa@xxxxxxx.xxx> wrote:
> If someone puts this into a list, they should be very clear where a
> radio requires an optional module (e.g. The UT-10 for the TS-790 is
> nearly un-obtainium).
>
> Also, Didn't I see in passing that testing the L-band uplink indicated
> that the radios really should have 5khz tuning steps? Not all of these
> rigs can do that.
>
> Bill W1PA
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Mon, 22 Jan 2018 20:37:22 -0900
From: Edward R Cole <kl7uw@xxxxxxxxx.xxx>
To: John Geiger <af5cc2@xxxxx.xxx>
Cc: AMSAT BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] L-Band Equipment List
Message-ID: <201801230537.w0N5bObW030368@xxxxxxxxx.xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Thanks for all the comments. Back in 1998 I bought the new FT-847
just before AO-40 launch. I was also getting into eme starting on
2m. The 847 worked very nice for satellite operation and eme and I
kept it for 14 years. Note: I was AL7EB until 2005.
But in 2010 I decided using a better HF radio with good transverters
was a better way to do eme so I bought a K3 and DEMI transverters for
144/222/432/1296/3456. I already had a 10368/144 DEMI
transverter. Subsequent to selling the FT-847 in 2012, I missed
having full use of the 430-450 band and decided after quite a lot of
searching new dual-band FM radios that finding a substitute for the
old 847 made more sense. A local ham up here in AK had three
FT-736R's so I convinced him to sell me one that had the basic
VHF/UHF bands for $500. Interestingly, that got me a good old
satellite radio in addition with all-mode on both bands. I had two
other radios with 6m and transverters for 222 and 1296 so did not
need to get those modules for the 736R.
Since then I sold the DEMI 222/28 and bought a 222 30w FM transceiver
(no SSB in use on 222 up here). My DEMI 432/28 has been idle with
having the FT-736R. But it might still get some use as I installed
dual LO's (locking PLL) to cover 432-434 and 435-437 MHz.
I can do 144-MHz with the K3+DEMI or with my KX3-2M; probably use
either on Rx and use the 736R with DEMI 144/1268 to Tx. But first
step will be getting the 736R back on satellite U/V using my old
AO-40 az-el tracking antennas. Probably get around to that in Feb.
so you may hear another Alaskan on the sats "pretty soon".
73, Ed - KL7UW
PS: I am on eme for 6m/2m/23cm and by next summer 9cm. Also
collecting parts to do 3cm-eme (eme took over my interests after AO-40).
At 02:22 PM 1/22/2018, John Geiger wrote:
>Right now Ham Radio Outlet
>(<http://www.hamradio.com>www.hamradio.com) has a Yaesu FT736R with
>the 6 meter module and the 23cm module on their consignment list for $1000
>
73, Ed - KL7UW
http://www.kl7uw.com
Dubus-NA Business mail:
dubususa@xxxxx.xxx
------------------------------
Message: 7
Date: Mon, 22 Jan 2018 23:46:15 -0800 (PST)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxxx anderson58625 <anderson58625@xxxxx.xxx>
Subject: Re: [amsat-bb] Exciting Coax
Message-ID: <992329878.579633.1516693575413@xxxxxxx.xxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
For 2 & 70cm I use LMR400. LMR is better (in my opinion), in that it's more
flexable, 9913 can get water inside. Unless coax connectors are super sealed.
73 Bob W7LRD
> On January 22, 2018 at 6:03 PM anderson58625 <anderson58625@xxxxx.xxx>
wrote:
>
>
> Reading the subject line, I may have somehow mixed sarcasm with a potential
> pun (eye of the beholder!) <grin>. Sorry for that.
>
>
>
> I seek to avoid investing in a set of cable producing hardware (or assembled
> cables) which I will regret later. I am hoping to get some guidance
> regarding coax for:
>
> 1) IF patch between equipment (male-male BNC's)
>
> 2) 2m feedline (N-connectors) (<50')
>
> 3) 70cm feedline (N-connectors) (<50')
>
> 4) A later potential for feedline carrying microwave frequencies
> (>1GHz)
>
>
>
> The frequency & loss-rate charts for coax are informative, but I'm not sure
> I'm seeing which connectors will fit what cable brand/types. With the
> variables of loss, dimensions, flexibility, and potential proprietary
> crimping systems, etc., I don't have enough experience or information to
> confidently make an online materials order. Things were much easier down
> here with just HF frequencies, RG-213, and good quality (weather protected)
> PL-259's! <grin>
>
>
>
> For IF patch cables, I figure these are conveying HF so the cable type/loss
> at 1-3' isn't very important. But, there is also shielding: A
> consideration?
>
> . Any thoughts on IF cables?
>
> . Plus, I've never attached a BNC to a cable. Easy? Avoid it?
>
> . Plan on a new crimper/die?
>
> . Or, if premade would be cheaper (just a few IF patch cables), any
> quality sources to recommend?
>
>
>
> For the 2m & 70cm feedlines, I know flexibility may be a consideration on
> rotating/elevating masts. Of course, I'm sure a rigid feedline may be
> superior elsewhere, but I am not at that point yet. Still, advice on that
> subject is gratefully appreciated. I need to provide good questions to hope
> for good answers, so what feedline you would recommend for:
>
> . Reasonable flexibility/portability
>
> . 2m-23cm
>
> . Modest power
>
> . <50'
>
> . For use with n-connectors
>
>
>
> The benefit of you knowledge and experience is much appreciated.
>
>
>
> 73
>
>
>
> Mark W9AT
>
>
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 8
Date: Tue, 23 Jan 2018 03:29:42 -0500
From: aj9n@xxx.xxx
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2018-01-23
06:00 UTC
Message-ID: <16122231fcd-1721-86980@xxxxxxxxxxxxx.xxx.xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Upcoming ARISS Contact Schedule as of 2018-01-23 06:00 UTC
Quick list of scheduled contacts and events:
?
Naka Junior High School, Kakamigahara City, Japan, direct via 8J25D
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Mark Vande Hei KG5GNP
Contact was successful: Mon 2018-01-22 10:23:21 UTC 53 deg (***)
?
The English School, Nicosia, Cyprus, telebridge via W6SRJ
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Mark Vande Hei KG5GNP
Contact is a go for: Wed 2018-01-24 10:35:45 UTC 56 deg
?
Watch for live stream at www.cyhams.org/ariss.html
?
Central Magnet Math & Science ES/Batesville School District, Batesville, AR,
telebridge, via ON4ISS? (***)
The ISS callsign is presently scheduled to be OR4ISS (***)
The scheduled astronaut is Joe Acaba KE5DAR (***)
Contact is a go for: Wed 2018-01-31 18:18:30 UTC 80 deg (***)
?
******************************************************************************
ARISS is always glad to receive listener reports for the above contacts.?
ARISS thanks everyone in advance for their assistance.? Feel free to send
your reports to aj9n@xxxxx.xxx or aj9n@xxx.xxx.
?
Listen for the ISS on the downlink of 145.8? MHz.
?
******************************************************************************
*
?
All ARISS contacts are made via the Kenwood radio unless otherwise noted.
?
******************************************************************************
*
Several?of you have sent me emails asking about the RAC ARISS website and
not being able?to get in.? That has now been changed to?
http://www.ariss.org/
Note that there are links to other ARISS websites from this?site.
****************************************************************************
Looking?for something new to do?? How about receiving DATV from the ISS???
If interested, then please go to the ARISS-EU website for complete?
details.? Look for the buttons indicating Ham?Video.? ? ? ? ? ? ? ? ? ? ? ?
? ?
? ? ? ? ? ? ? ? ? ? ?
http://www.ariss-eu.org/? ?
?
If you need some assistance, ARISS mentor Kerry N6IZW, might be able to
provide some insight.? Contact Kerry at kbanke@xxxxxxxxx.xxx
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:?
Francesco IK?WGF with 132
Satoshi 7M3TJZ with 128 (***)
Gaston ON4WF with 123
Sergey RV3DR with 100
****************************************************************************
The?webpages listed below were all reviewed for accuracy.? Out of date
webpages?were removed and new ones have been added.? If there are additional
ARISS?websites I need to know about, please let me know.
Note, all times?are approximate.? It is recommended that you do your own
orbital prediction?or start listening about 10 minutes before the listed
time.
All dates and?times listed follow International Standard ISO 8601 date and
time format? YYYY-MM-DD HH:MM:SS
The complete schedule page has been updated as of?2018-01-23 06:00 UTC.? (***)
Here you will find a listing of all scheduled?school contacts, and
questions, other ISS related websites, IRLP and?Echolink websites, and
instructions for any contact that may be streamed?live.??
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
http://www.amsat.org/amsat/ariss/news/arissnews.txt
Total number?of ARISS ISS to earth school events is 1203. (***)
Each school counts as 1?event.
Total number of ARISS ISS to earth school contacts is 1152. (***)
Each contact may have multiple schools sharing the same time slot.
Total number of ARISS supported terrestrial contacts is?47.
A complete year by year breakdown of the contacts may be found in the
file.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
Please?feel free to contact me if more detailed statistics are needed.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
The?following US states and entities have never had an ARISS contact:
Arkansas,?Delaware, South Dakota, Wyoming, American?Samoa, Guam, Northern
Marianas Islands, and the Virgin Islands.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
QSL?information may be found at:??
http://www.ariss.org/qsl-cards.html?
ISS callsigns:? DP?ISS, IR?ISS, NA1SS, OR4ISS,?RS?ISS
****************************************************************************
The successful school list has been updated as of 2018-01-23 06:00 UTC. (***)
http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf
Frequency? chart for packet, voice, and crossband repeater modes showing
Doppler? correction? as of 2005-07-29 04:00 UTC
http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction
.rtf
Listing?of ARISS related magazine articles as of 2006-07-10 03:30 UTC.
http://www.amsat.org/amsat/ariss/news/ARISS_magazine_articles.rtf
Check out the Zoho reports of the ARISS?contacts
https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
Exp. 53 on orbit
Mark Vande Hei KG5GNP
Alexander Misurkin
Joe Acaba KE5DAR
?
Exp. 54 on orbit
Scott Tingle KG5NZA
Norishige Kanai
Alexander Skvortsov
****************************************************************************
73,
Charlie?Sufana AJ9N
One of the ARISS operation team mentors
?
?
?
?
?
?
?
?
?
?
?
?
------------------------------
Message: 9
Date: Tue, 23 Jan 2018 12:48:31 +0000 (UTC)
From: Robert Switzer <rs2atmink@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Exciting Coax
Message-ID: <109407170.210095.1516711711265@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
The question, really, is what feedline is best for 23cm?It also would
matter if one is working fixed vs. portable, of course, due to the different
feedline lengths,
LMR-400 is great for 2 and 70cm, of course.
Rob KA2CZU
On Tuesday, January 23, 2018, 2:48:00 AM EST, Bob- W7LRD
<w7lrd@xxxxxxx.xxx> wrote:
For 2 & 70cm I use LMR400.? LMR is better (in my opinion), in that it's
more flexable, 9913 can get water inside.? Unless coax connectors are super
sealed.?
73 Bob W7LRD
> On January 22, 2018 at 6:03 PM anderson58625 <anderson58625@xxxxx.xxx>
wrote:
>
>
> Reading the subject line, I may have somehow mixed sarcasm with a potential
> pun (eye of the beholder!) <grin>.? Sorry for that.
>
>?
>
> I seek to avoid investing in a set of cable producing hardware (or assembled
> cables) which I will regret later.? I am hoping to get some guidance
> regarding coax for:
>
> 1)? ? ? IF patch between equipment (male-male BNC's)
>
> 2)? ? ? 2m feedline (N-connectors) (<50')
>
> 3)? ? ? 70cm feedline (N-connectors) (<50')
>
> 4)? ? ? A later potential for feedline carrying microwave frequencies
> (>1GHz)
>
>?
>
> The frequency & loss-rate charts for coax are informative, but I'm not sure
> I'm seeing which connectors will fit what cable brand/types.? With the
> variables of loss, dimensions, flexibility, and potential proprietary
> crimping systems, etc., I don't have enough experience or information to
> confidently make an online materials order.? Things were much easier down
> here with just HF frequencies, RG-213, and good quality (weather protected)
> PL-259's! <grin>
>
>?
>
> For IF patch cables, I figure these are conveying HF so the cable type/loss
> at 1-3' isn't very important.? But, there is also shielding:? A
> consideration?
>
> .? ? ? Any thoughts on IF cables??
>
> .? ? ? Plus, I've never attached a BNC to a cable.? Easy?? Avoid it??
>
> .? ? ? Plan on a new crimper/die??
>
> .? ? ? Or, if premade would be cheaper (just a few IF patch cables), any
> quality sources to recommend?
>
>?
>
> For the 2m & 70cm feedlines, I know flexibility may be a consideration on
> rotating/elevating masts.? Of course, I'm sure a rigid feedline may be
> superior elsewhere, but I am not at that point yet.? Still, advice on that
> subject is gratefully appreciated.? I need to provide good questions to hope
> for good answers, so what feedline you would recommend for:
>
> .? ? ? Reasonable flexibility/portability
>
> .? ? ? 2m-23cm
>
> .? ? ? Modest power
>
> .? ? ? <50'
>
> .? ? ? For use with n-connectors
>
>?
>
> The benefit of you knowledge and experience is much appreciated.
>
>?
>
> 73
>
>?
>
> Mark W9AT
>
>?
>
>?
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
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_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
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AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
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------------------------------
Message: 10
Date: Tue, 23 Jan 2018 08:28:26 -0600
From: "Nick Pugh" <quadpugh@xxxxxxxxx.xxx>
To: "'amsat-bb'" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] fox 1b
Message-ID: <006901d39456$6edcaa90$4c95ffb0$@xxxxxxxxx.xxx>
Content-Type: text/plain; charset="utf-8"
I have downloaded fox telem however I can find the fox ib file I see 1 1c
and 1d file
Suggestions?
nick
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
Disagree I Learn
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
AMSAT-NA makes this open forum available to all interested persons worldwide
without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 13, Issue 35
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