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KH6JRM's Amateur Radio Antenna Topics: Simple Ham Radio Antennas: A 5/8 wavelength vertical ground plane. Post #272

KH6JRM's Amateur Radio Antenna Topics: Simple Ham Radio Antennas: A 5/8 wavelength vertical ... http://t.co/JqRMxjqSI3 #ham #radio
Russ Roberts's insight:

Here's another page from my Amateur Radio Antenna Topics Blog.  This time, I've built a simple, inexpensive 5/8 wavelength vertical for 10 meters.  When propagation arrives at my Hawaii Island location in the late morning hours, I can get some decent DX with this homebrew "skyhook".  I'm also making versions of this antenna for 15 and 20 meters.  Aloha de Russ, KH6JRM).

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SpaceX Puts AsiaSat 6 Launch on Hold for 'Triple-Check' | NBC News

SpaceX Puts AsiaSat 6 Launch on Hold for 'Triple-Check' | NBC News | KH6JRM's Amateur Radio Blog | Scoop.it

SpaceX postponed its launch of the AsiaSat 6 telecommunication satellite on Tuesday, just hours before its Falcon 9 rocket was due to lift off from Florida's Cape Canaveral Air Force Station. In a statement, SpaceX CEO Elon Musk said "we are not aware of any issue ... but have decided to review all potential failure modes and contingencies again." He expected the process to be completed within two weeks.


Via Stratocumulus
Russ Roberts's insight:

SpaceX has delayed the launch of a Falcon 9 rocket carrying the AsiaSat 6 telecommunications satellite.  In a prepared press release, SpaceX CEO Elon Musk said he "was not aware of any issue, but...decided to review all potential failure modes and contingencies again."  The "triple check" process should be completed within two weeks.  Aloha de Russ (KH6JRM).

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Seagate Ships World’s First 8TB Hard Drives

Seagate Ships World’s First 8TB Hard Drives | KH6JRM's Amateur Radio Blog | Scoop.it

Seagate Technology (NASDAQ:STX), a world leader in storage solutions, today announced it is shipping the world’s first 8TB hard disk drive. An important step forward in storage, the 8TB hard disk drive provides scale-out data infrastructures with supersized-capacity, energy-efficiency and the lowest total cost of ownership (TCO) in the industry for cloud content, object storage and back-up disaster recovery storage.

 

“As our world becomes more mobile, the number of devices we use to create and consume data is driving an explosive growth in unstructured data. This places increased pressure on cloud builders to look for innovative ways to build cost-effective, high capacity storage for both private and cloud-based data centers,” said Scott Horn, Seagate vice president of marketing. “Seagate is poised to address this challenge by offering the world’s first 8TB HDD, a ground-breaking new solution for meeting the increased capacities needed to support the demand for high capacity storage in a world bursting with digital creation, consumption and long-term storage.”

 

A cornerstone for growing capacities in multiple applications, the 8TB hard drive delivers bulk data storage solutions for online content storage providing customers with the highest capacity density needed to address an ever increasing amount of unstructured data in an industry-standard 3.5-inch HDD. Providing up to 8TB in a single drive slot, the drive delivers maximum rack density, within an existing footprint, for the most efficient data center floor space usage possible.

 

“Public and private data centers are grappling with efficiently storing massive amounts of unstructured digital content,” said John Rydning, IDC’s research vice president for hard disk drives. “Seagate’s new 8TB HDD provides IT managers with a new option for improving storage density in the data center, thus helping them to tackle one of the largest and fastest growing data categories within enterprise storage economically.”

 

The 8TB hard disk drive increases system capacity using fewer components for increased system and staffing efficiencies while lowering power costs. With its low operating power consumption, the drive reliably conserves energy thereby reducing overall operating costs. Helping customers economically store data, it boasts the best Watts/GB for enterprise bulk data storage in the industry.

 

“Cleversafe is excited to once again partner with Seagate to deliver to our customers what is truly an innovative storage solution. Delivering absolute lowest cost/TB along with the performance and reliability required for massive scale applications, the new 8TB hard disk drive is ideal for meeting the needs of our enterprise and service provider customers who demand optimized hardware and the cost structure needed for massive scale out,” said Tom Shirley, senior vice president of research and development, Cleversafe.

 

Outfitted with enterprise-class reliability and support for archive workloads, it features multi-drive RV tolerance for consistent enterprise-class performance in high density environments. The drive also incorporates a proven SATA 6Gb/s interface for cost-effective, easy system integration in both private and public data centers.


Via Dr. Stefan Gruenwald
Russ Roberts's insight:

This is a real game changer when it comes to bulk data storage.  According to a Seagate press release, "the 8TB hard disc drive increases system  capacity using fewer components for increased system and staffing efficiencies while lowering power costs...it boasts the best Watt/GB for enterprise bulk data storage in the industry."  Drives of this magnitude will become commonplace as the demand for digital storage grows.  There may be an amateur radio application here, especially for those into SDR (software defined radios), exotic digital modes, and contesting.  Aloha de Russ (KH6JRM).

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Sable Island mini DXpedition.

One-day operation set for 08 September 2014.

Russ Roberts's insight:

Source:  Southgate Amateur Radio Club News.

 

Here's the latest update on the Sable Island (CY0C) DXpedition. Parks Canada is only permitting daylight operation, so have your radio ready when the operators come ashore on 08 September 2014.  According to DXpedition members, the main objective of the Sable Island operation is "to assess the feasibility and practicality for future one-day amateur radio DXpeditions to Sable Island."  For details, visit http://www.cy0dxpedition.com. Aloha de Russ (KH6JRM).

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Baofeng UV-5RA+ Dual-Band 136-174/400-520MHz Ham Two-way Radio UHF/VHF handheld

Baofeng UV-5RA+ Dual-Band 136-174/400-520MHz Ham Two-way Radio UHF/VHF handheld | KH6JRM's Amateur Radio Blog | Scoop.it
in Consumer Electronics, Radio Communication, Walkie Talkies, Two-Way Radios (Baofeng UV-5RA+ Dual-Band 136-174/400-520MHz Ham Two-way Radio UHF/VHF handheld http://t.co/3oSpGajFhK #prepping #survival...
Russ Roberts's insight:

Here's a good price ($42.99) for the popular Chinese-made Baofeng UV-5RA, dual band VHF/UHF HT.  While I wouldn't have this HT as my primary hand held radio, it would make a nice  piece of portable equipment for your "go kit".  As with any internet purchase, check out the item and the reputation of the seller before you buy.  There are several user groups that will help you program this rig if the manual is hard to understand.  Aloha de Russ (KH6JRM).

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10 GHz under threat from broadband internet links.

Severe problem reported in Prague, Czech Republic.

Russ Roberts's insight:

Source:  Southgate Amateur Radio Club News.

 

According to Czech Republic Amateur Radio contest station OK2KKW, interference from commercial internet links are covering up weak ham stations in the Amateur Radio 10 GHz band.   I fear we are going to see more of this intrusion as the demand for broadband services increases.  Already, amateur radio access to the 2 and 3 GHz bands is being restricted in the UK because of the increased need for rf spectrum from mobile communications services and broadband internet services.  Even military users are being told to look elsewhere for spectrum in the UK.  I predict the erosion of amateur radio access to the microwave frequencies will continue at an accelerated pace.  Aloha de Russ (KH6JRM).

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Southend & District Amateur Radio Special Event - Southgate Amateur Radio Club

Southend & District Amateur Radio Special Event - Southgate Amateur Radio Club | KH6JRM's Amateur Radio Blog | Scoop.it
Southend & District Amateur Radio Special Event
Southgate Amateur Radio Club
...
Russ Roberts's insight:

There's nothing quite like operating a special event station to help a worthy cause.  Such was the case this past Sunday, 24 August 2014, when an amateur radio team from the Southend and District Amateur Radio Society participated in a fund raising effort for the Little Havens Hospice.  Using the special event call sign GB0FHH, the club was on-air from the Summer Music Festival at the Ekco Sports & Social Club in Southend.  For photos and more information, visit http://www.esexham.co.uk/news/southend-ars-aug-2-14.html. ; Aloha de Russ (KH6JRM).

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SpaceX test mishap prompts delay of Falcon 9 launch | Spaceflight Now

SpaceX test mishap prompts delay of Falcon 9 launch | Spaceflight Now | KH6JRM's Amateur Radio Blog | Scoop.it

SpaceX says it has delayed liftoff of the next Falcon 9 rocket until Wednesday to ensure the problem that caused a prototype rocket to self-destruct in a test flight Friday will not pose a risk to the launch of a telecommunications satellite for AsiaSat.

 

Launch is now set for 12:50 a.m. EDT (0450 GMT) Wednesday from Cape Canaveral's Complex 40 launch pad. The launch window extends for 3 hours, 15 minutes.


Via Stratocumulus
Russ Roberts's insight:

SpaceX says it's delaying this weeks's Falcon 9 rocket launch until Wednesday morning to review circumstances behind a test flight that ended in a spectacular explosion on Friday.  SpaceX spokesman John Taylor said the space launch company is aiming to launch the Asia 6 telecommunications satellite at 0450 UTC Wednesday from the Cape Canaveral Complex, launch pad number 40.  Aloha de Russ.(KH6JRM).

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Chasqui-1 amateur radio satellite deployed - Radio Society of Great Britain - Main Site : Radio Society of Great Britain – Main Site

Chasqui-1 amateur radio satellite deployed - Radio Society of Great Britain - Main Site : Radio Society of Great Britain – Main Site | KH6JRM's Amateur Radio Blog | Scoop.it
Chasqui-1 amateur radio satellite deployed

http://t.co/3fcXsuQIQZ
Russ Roberts's insight:

The latest update from the Radio Society of Great Britain (RSGB) on the recent launch of the Peruvian Chasqui-1 amateur radio satellite from the International Space Station (ISS).  Experiments on board include cameras that work by visible and infrared light.  The satellite also carries an amateur radio beacon transmitting on 437.025 MHz, using either 1200 bps AFSK or 9600 bps GMSK.  Aloha de Russ (KH6JRM).

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10 Most Common Power Disturbances That Make Our Life Difficult | EEP

10 Most Common Power Disturbances That Make Our Life Difficult | EEP | KH6JRM's Amateur Radio Blog | Scoop.it
Deviation from sinusoidal form at the nominal voltage level is actually a power quality issue or power disturbance - overvoltage, undervoltage, sag

Via David Hall
Russ Roberts's insight:

Thanks to reporter David Hall for this fascinating report from the electrical-engineering-portal on the most common causes of power disturbances "that make our lives difficult."  Among the main culprits are:  overvoltage, undervoltage, swell, sag, interruptions, notch, transients, flicker, harmonic distortion, and electrical noise.  Excellent, well-explained tutorial.  Aloha de Russ (KH6JRM).

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Amateur Radio World Castles Award - Southgate Amateur Radio Club

Amateur Radio World Castles Award
Southgate Amateur Radio Club
... - Dragan YT2KID will be active 23rd August 2014 from Stalac Fortress, Todorova Kula Tvrdava, WCA: YU-00022 and on 24th of August 2014 from Bedem Castle, village Maskare - Varvarin.
Russ Roberts's insight:

Thanks to Andrew (RN1CW) for some of the stations in the Russian Federation participating in the Amateur Radio World Castle Award.  Stations of interest include YT2KID/P to the Stalac Fortress and Bedem Castle and UR2LM/P to Slavayanskiy Val, Limanskaya Fortress and Effremovskaya Fortress.  Aloha de Russ (KH6JRM).

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Amazon.com: Ham It Up v1.2 - NooElec RF Upconverter For Software Defined Radio. Works With Most SDRs Like Funcube, RTLSDR (RTL2832U with E4000, FC0013 or R820T Tuners); MF/HF Converter With SMA Jac...

Amazon.com: Ham It Up v1.2 - NooElec RF Upconverter For Software Defined Radio.
Russ Roberts's insight:

This item from amazon.com may be useful for those amateur radio operators who own Software Defined Radios (SDR).  The price seems reasonable--$54.95 with free shipping.  Be sure to inquire before you buy.  Aloha de Russ (KH6JRM).

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FCC Proposes to Fine CBer $14,000 for Not Permitting Station Inspection

FCC Proposes to Fine CBer $14,000 for Not Permitting Station Inspection | KH6JRM's Amateur Radio Blog | Scoop.it
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.

Via David Hall
Russ Roberts's insight:

Thanks to reporter David Hall for this story. Apparently, the FCC is getting serious about malicious interference to electronic equipment and licensed users of the rf spectrum.  This time, the culprit is a two-time offender using a citizen's band transmitter.  According the FCC, Tommie Slater was fined $14,000 for interfering with a neighbor's "home electronic equipment."  Slater refused to have his station inspected by FCC personnel.  Slater was also caught doing the same thing back in 2004, when he was cited "for using a  non-certified transmitter during restricted hours the commission had imposed following interference complaints."  Slater has 30 days to respond to the FCC inquiry.  Some people never seem to learn.  Aloha de Russ (KH6JRM).

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How to Build a Delta Loop Antenna.

A quick guide to building a simple delta loop antenna for 20 meters.

(http://www.youtube.com/watch?v=QJl359x6K_1).

Russ Roberts's insight:

I came across this article and video while I was searching for loop antenna ideas at my QTH.  Excellent presentation by Hiram Vazquez (WV2H), covering how to build a 20-meter delta loop and how to make a simple Q match for the antenna.  The Q match will make the antenna resonant at 50 ohms at the feedpoint.  According to Vazquez, the delta loop is bidirectional, offers some gain over a dipole (about 1.2 dB), is easy to build, and is inexpensive. Vazquez built his 20 meter delta loop in March 2012 and has worked 215 DXCC stations, with 100 watts.  This looks like a simple, effective antenna for your backyard.  I've used delta loops in the past and have found them quiet and easy to tune.  To obtain multiband use, use 300 ohm tv twin lead or 450 ohm ladder line into a balanced tuner.  If you lack a balanced tuner, feed the ladder line into a 4:1 balun and run a short length of 50 ohm coaxial cable from the balun to your antenna transmatch (tuner).  Aloha de Russ (KH6JRM).

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dB or not dB? Everything You Ever Wanted to Know About Decibels But Were Afraid to Ask Abstract | TechOnline

dB or not dB? Everything You Ever Wanted to Know About Decibels But Were Afraid to Ask Abstract | TechOnline | KH6JRM's Amateur Radio Blog | Scoop.it
TechOnline is a leading source for reliable tech papers. View the dB or not dB? Everything You Ever Wanted to Know About Decibels But Were Afraid to Ask abstract for details on the dB or not dB? Everything You Ever Wanted to Know About Decibels But Were Afraid to Ask tech paper.

Via David Hall
Russ Roberts's insight:

Thanks to reporter David Hall for this excellent tutorial on decibels, or "Everything you wanted to know about decibels but were afraid to ask.  This technical paper covers decibels in more detail than I thought possible.  This abstract is worth keeping for your reference library or when someone needs to interpret what 59+20 dB over 9 really means.  Good, technical paper.  Aloha de Russ (KH6JRM).

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Tristan da Cunha and Gough Island DXpedition.

Early September on air date established.

Russ Roberts's insight:

Source:  Southgate Amateur Radio Club News.

 

Paul (ZS1S/AD9ZS) and possibly one other amateur radio operator will be on-air from Tristan da Cuna and perhaps Gough Island in early September.  The South African Antarctic Supply ship "SA Agulhas II" will leave Cape Town on 04 September 2014 with arrival at Tristan da Cunha 4 to 5 days later.  The ship will depart for  Gough Island after a few days and return to Tristan da Cunha ready for departure to Cape Town on 04 October 2014.  The amateur radio team will install a six meter propagation beacon (ZD9SIX) on Tristan da Cunha before they leave for Cape Town.  Aloha de Russ (KH6JRM).

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New Mellish Reef videos available.

Four new videos capture the excitement of this DXpedition.

Russ Roberts's insight:

Source: Southgate Amateur Radio Club News.

 

New videos of the VK9MT DXpedition to Mellish Reef are now available.  For details, visit http://vk9mt.com.  Go to "media" and then o "video" to see the expedition videos.  Good stuff.  Aloha de Russ (KH6JRM).

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SpaceX Fail? Great!

SpaceX Fail? Great! | KH6JRM's Amateur Radio Blog | Scoop.it

Congratulations are due to Elon Musk and his Space Exploration Technologies (SpaceX) for generating an amazingly cool explosion over Central Texas Saturday morning when an experimental Falcon 9 Reusable (F9R) self-destructed after a launch anomaly. This temporary setback involved no risk to humans and followed an impressive number of successful tests on the path to dramatically lowering space launch costs via the development of a reusable launch vehicle.

 

While NASA's space shuttle demonstrated that an orbital spacecraft can be reused, and at least two other commercial firms are developing exciting new vehicles that can be reflown, these systems dispose of nearly all of the hardware required to put them into space in the first place. By accepting the long-standing assumption of a single-use launcher, they are locked into a cold war paradigm where every orbital launch is a $100 million event. Only SpaceX has been pushing to completely redefine the economics of space by returning the first and possible second stage assemblies and engines safely back to Earth. If perfected, such a system could reduce the cost of launching payloads or astronauts by an order of magnitude.

 


Via Stratocumulus
Russ Roberts's insight:

Despite the recent failure of its Falcon 9 Reusable Launch Vehicle, SpaceX is firmly committed to reusing as much of the launch system as possible.  At $100 million per NASA Shuttle Launch, the new Falcon 9 system marks a radical departure for sending payloads into space. If SpaceX perfects its Reusable Launch Vehicle, the new launch system "could reduce the cost of launching payloads or astronauts by an order of magnitude.   I trust that AMSAT is listening and will, investigate lower cost launch vehicles.  A low-cost constellation of amateur radio satellites similar to the old IMARSAT system would do a lot for emergency communications and the promotion of amateur radio.  Aloha de Russ (KH6JRM).

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IOTA news from OPDX,

Latest data from Tedd Mirgliotta (KB8NW).

Russ Roberts's insight:

Source:  Southgate Amateur Radio Club News.

 

Here's the latest Islands On The Air (IOTA) DX report from Tedd (KB8NW).

 

Some of the interesting island locations being activated include:

 

EU-080)--A Spanish team will activate EG1EI on Estela de Fora Island from 29-31 August 2014.

 

EU-174--Laci (HA0HW) will be active from Thassos Island from 12 September-22 September 2014.

 

NA-046--Bill (K2HVN will be on Martha's Vineyard on 20 September 2014 only.

 

OC-218--Cear (VE3LYC) and Bob (KD1CT) will be active from Mathhew Island from 04-07 September 2014.

 

Aloha de Russ (KH6JRM).

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Simple Ham Radio Antennas: The Multiband HF Stealth Vertical.

Simple Ham Radio Antennas:  The Multiband HF Stealth Vertical. | KH6JRM's Amateur Radio Blog | Scoop.it
https:www.youtube.com/watch?v=Uk8XD7BP1U. I ran across this article by Tony Milluzzi (KD8RTT) while I was searching for some stealth antenna ideas for my "antenna farm" at my new QTH in the Puna Di...
Russ Roberts's insight:

Here's an update of an antenna I built to replace the vertical antenna I lost during Tropical Storm Iselle on 07-08 August 2014.  I patterned the antenna after a video submitted by Tony Milluzzi (KD8RTT).  Great antenna--easy to build, cheap, and mostly invisible.  Aloha de Russ (KH6JRM).

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4 Pcs UHF 400-470 MHz Portable Handheld 2-way Amature Ham Radio BF-888 S

4 Pcs UHF 400-470 MHz Portable Handheld 2-way Amature Ham Radio BF-888 S | KH6JRM's Amateur Radio Blog | Scoop.it
in Consumer Electronics, Radio Communication, Walkie Talkies, Two-Way Radios (4 Pcs UHF 400-470 MHz Portable Handheld 2-way Amature Ham Radio BF-888 S http://t.co/e5BeU9uyFw #prepping #survival #preppertalk...
Russ Roberts's insight:

According to updated information, only 2 of the Baofeng BF-888 S UHF (400-470 MHz), 2-way HTs are available.  The price is $39.99.  This HT would make a nice backup HT for your car, CERT team, or RACES club.  Aloha de Russ (KH6JRM).

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Lightning strikes and other over voltage threats require surge protection - ABB Conversations

Lightning strikes and other over voltage threats require surge protection - ABB Conversations | KH6JRM's Amateur Radio Blog | Scoop.it
As a Product Marketing Manager for surge protection, I experience daily the curiosity and the mystery around lightning.

Via David Hall
Russ Roberts's insight:

Thanks to reporter David Hall for referring me to this excellent article by Bertrand Berges.  Berges describes the physics of lightning strikes and the type of equipment that will protect your data and processing equipment.  Bertrand makes an excellent case for protecting your sensitive electronic equipment with with specific kinds of surge protection--type 1 which occurs during a massive surge from a lightning strike and type 2, which happens during repetitive small surges that can damage equipment over the short term.  Excellent article worth keeping in your amateur radio library.  Aloha de Russ (KH6JRM).

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The first Greek microsat is a fact!

Help is needed to relay reception reports back to the scientific team managing the small satellite.

Russ Roberts's insight:

Source:  Southgate Amateur Radio Club News.

 

The Cyprus Amateur Radio Society is asking all hams on Cyprus "to support the work of the group through the establishment of the necessary infrastructure for reception and relaying of the microsatelllite signals back to the team for scientific analysis through the website www.lamdasat.com."  Aloha de Russ (KH6JRM).

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Ham radio, what you need to know! - The Prepper Broadcasting Network

Ham radio, what you need to know! - The Prepper Broadcasting Network | KH6JRM's Amateur Radio Blog | Scoop.it
Ham radio, what you need to know! Ham radio can be an indispensable resource during an event. Not only will it allow you to keep in touch with other members (Alerts: Ham radio, what you need to know!
Russ Roberts's insight:

A concise, basic explanation of what amateur radio can do for communities isolated by natural or human-caused disasters.  This well-written article from "The Prepared Canadian" is part of an effort to get the "Prepper Community" into ham radio for its emergency communications applications.  This article is part of an amateur radio series being streamed over the "Prepper Broadcasting Network."  Aloha de Russ (KH6JRM).

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Cover the Next SpaceX Launch In-Person

Cover the Next SpaceX Launch In-Person | KH6JRM's Amateur Radio Blog | Scoop.it

We’re inviting social media users to apply for credentials to attend the Sept. 19 launch for the next cargo resupply flight to the International Space Station by Space Exploration Technologies (SpaceX). Photographer on Instagram? Come photograph the launch. Prolific tweeter? Come live tweet the event. Long read writer on your blog? Come write about NASA. We invite you to the launch of the SpaceX Falcon 9 rocket, targeted to liftoff at 2:38 a.m. EDT Friday, Sept. 19, from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida.


Via Stratocumulus
Russ Roberts's insight:

If you maintain an amateur radio blog, a social media presence, or work in the communications field, you may be eligible for press credentials to cover the 19 September 2014 launch of the next cargo resupply ship to the International Space Station (ISS).  Why not give this a try?  If you're interested, contact NASA--http://www.nasa.gov.  Aloha de Russ (KH6JRM).

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A Tiny 3-D Printed Space Camera To Fit Inside CubeSats | Popular Science

A Tiny 3-D Printed Space Camera To Fit Inside CubeSats | Popular Science | KH6JRM's Amateur Radio Blog | Scoop.it

s“ NASA is experimenting with small space cameras made almost entirely of 3-D printed parts. One experimental telescope, sized to fit inside a four-inch CubeSat, will likely be finished this September, according to the agency.”


Via iz1crr, Fabrice Chenille, Stratocumulus
Russ Roberts's insight:

The manufacturing of ultra small parts for space cameras, transmitters, and motors is becoming a major mission of 3D technology.  Once these products are put inside a CubeSat, you will have a fully functional and sophisticated research vessel at a reasonable price.  I wonder if AMSAT is considering something such as this.  Aloha de Russ (KH6JRM).

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