Re: [Elecraft] Arecibo antenna collapses

Frank, I was the foundation project engineer for the Square Kilometre Array (which your URL refers to), as well as leading much of the effort to get the SKA pathfinders on the ground here in Western Australia. As you know, there's a complementary section of the Telescope in South Africa.

Re: [Elecraft] Elecraft Kit Assembly

Made one formyK3 build from piece of shrink-tubing. Sent from my iPhone ...nr4c. bill > On Dec 2, 2020, at 3:41 PM, James Bennett via Elecraft > wrote: > > Yup, I still have mine from back in the late 60’s as a novice and use it > every time I build a kit! > > Jim / W6JHB > >> On Dec 2,

Re: [Elecraft] Elecraft Kit Assembly

And a whole $2.00! That's pretty much what the Heathkit one looks like, only red. 73, Scott K9MA On 12/2/2020 3:56 PM, Harry Yingst wrote: Looks like Jenson Tools sells them Look Here https://www.jensentools.com/menda-35120-four-way-nut-starter/p/758ie351 On Wednesday, December 2,

Re: [Elecraft] Arecibo antenna collapses

There is also the Square kilometer array radio telescope: https://www.skatelescope.org/ It could be ready to operate before the decade is out and is even bigger. - frank W4TG On Wed, Dec 2, 2020 at 7:03 PM Wes wrote: > Did they show you the transmitter? > > Wes N7WS > > > On 12/2/2020 10:22

Re: [Elecraft] Used antenna - Arecio antenna collapses

Really a shame to see its demise. It might not be re-built in Puerto Rico due to exposure to Hurricanes and encroaching civilization threatens the radio quiet area for useful radio astronomy. Wonder if a new site might be chosen (someday)? I copied the 432 MHz SSB signal from Arecibo using

Re: [Elecraft] Elecraft Kit Assembly

And $9.00 shipping + tax 73, joe K2UF -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of K9MA Sent: Wednesday, December 2, 2020 3:57 PM To: Harry Yingst; elecraft@mailman.qth.net Subject: Re: [Elecraft] Elecraft Kit Assembly

Re: [Elecraft] KPA500/KAT500 and RTTY

Thank you Richard. 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist, RFI ARRL Asst. Director, NW Division, Technical Resources On 12/2/20 3:50 PM, DC wrote: I run 500 watts FT8 6 through 80 meters with a maximum SWR of 1.2 to 1 into an 80

Re: [Elecraft] Elecraft Kit Assembly

A reasonable alternative can be made with a pencil or dowel stock and some non-adhesive shrink tubing. — Rob N9DTT Sent with ProtonMail Secure Email. ‐‐‐ Original Message ‐‐‐ On Wednesday, December 2, 2020 2:53 PM, KENT TRIMBLE wrote: > That's been suggested to Elecraft many times

Re: [Elecraft] KPA500/KAT500 and RTTY

I run 500 watts FT8 6 through 80 meters with a maximum SWR of 1.2 to 1 into an 80 meter full wave loop and a 6 meter beam. Even on the hottest of days I have never seen 70 degrees on the KPA500 utility. BTW, I use it 95% remote and it works great. If I ever saw over 70 degrees I would let

[Elecraft] Arecibo

A postscript to my previous post -- the SETI discussion titled "Radio Astronomy: The End of Big Dishes? " is still available online at https://www.seti.org/event/seti-talks-radio-astronomy-end-big-dishes. Another SETI event, which may even be this week or next, is a discussion of the science

[Elecraft] FW: Replacement headphone pads

de VE9AA.I don't know if the 2 pix imbedded will cross the reflector (they didn't, this is my 2nd try), but if they don't, then the pads are "Brainwavz Velour Ear pads" on Amazon.ca for $35.99 CDN and the picture of me..no loss if you don't see me (big HI HI) I love my Yamaha CM-500 headphones

Re: [Elecraft] Elecraft Kit Assembly

On 12/2/2020 1:56 PM, Harry Yingst via Elecraft wrote: Looks like Jenson Tools sells them Look Here https://www.jensentools.com/menda-35120-four-way-nut-starter/p/758ie351 You made me do it! I couldn't find mine from my Heathkit days, so I ordered two - one to use, one to lose. :) 73

Re: [Elecraft] KPA500/KAT500 and RTTY

Thank you Bob, getting some actual numbers helps... I cut off operations at 70C. In fact, if it starts getting above 65, I will terminate ASAP. Knowing it could get to 90C makes me feel a lot better! 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical

Re: [Elecraft] Arecibo antenna collapses

Did they show you the transmitter? Wes  N7WS On 12/2/2020 10:22 AM, Andrew Faber via Elecraft wrote: This is certainly getting way off topic on the Elecraft reflector, but I can’t resist mentioning that I have visited the FAST telescope in Guizhou Province. Here is a brief explanation from

Re: [Elecraft] Elecraft Kit Assembly

If you search for "Menda 35120" you will find other vendors selling them Mouser, Newark< Digi-Key, etc On Wednesday, December 2, 2020, 07:16:02 PM EST, Joe K2UF wrote: And $9.00 shipping + tax 73,  joe K2UF -Original Message- From: elecraft-boun...@mailman.qth.net

Re: [Elecraft] KX3 turns itself off randomly.

Looking through archives for Elecraft , I found this ; http://elecraft.365791.n2.nabble.com/KX3-Shutdown-td7593697.html It matches my setup and symptoms. I will turn the PA parameter off, and test without the KXPA100 online. Adrian Fewster On 1/12/20 12:58 am, David Haines wrote: I had

[Elecraft] Used antenna - Arecio antenna collapses

If you want a good buy on a used, high gain antenna, the Arecibo radio astronomy antenna will soon be up for grabs. Sold as is, where is. Some assembly required. https://www.npr.org/2020/12/01/940767001/arecibo-observatory-telescope-collapses-ending-an-era-of-world-class-research Doug K7CUU

Re: [Elecraft] Arecibo antenna collapses

I concur, it is sad that Arecibo will not be rebuilt. The director of operations is WP3R. I worked him in the Sweepstakes contest a couple of weeks ago. John KK9A Michael Walker va3mw wrote: Sorry, not funny. Arecibo was a great site and there are a number of Hams that are part of the

[Elecraft] [OT] Re: Arecibo antenna collapses

On 2020-12-02 11:06 a.m., j...@kk9a.com wrote: I concur, it is sad that Arecibo will not be rebuilt. I just saw the pictures of it on the BBC website. It looks like a complete write off based on the posted image. https://www.bbc.com/news/world-us-canada-55147973 -- Cheers! Kevin.

Re: [Elecraft] Arecibo antenna collapses

On 12/2/2020 9:06 AM, j...@kk9a.com wrote: I concur, it is sad that Arecibo will not be rebuilt. The director of operations is WP3R.  I worked him in the Sweepstakes contest a couple of weeks ago. Yes, I met Sr. Vazquez WP3R when I visited Arecibo during a bicycle tour 5 years ago.  A really

Re: [Elecraft] Kinda cool graphic of solar activity

If you really want to learn about the Solar Forecast, watch this. This is all new science to solar storms and the talk directly impacts HF operators. I won't spoil the ending, but if you want to see 10M open 24 hrs/day, it is worth watching. https://youtu.be/lRNJPkQPo_g Mike va3mw On Wed,

Re: [Elecraft] Arecibo antenna collapses

I suppose the question is why not rebuild it if the capability (or an upgraded capability) remains of consequential value to the scientific community and there is no existing capability that can be cobbled together elsewhere to match it. I don’t know what it would cost, but consider that one

Re: [Elecraft] Kinda cool graphic of solar activity

THANK YOU for that link! I saw a post, and emptied my trash on a different list, and deleted the post, then closed my browser... I have been looking for it for a bit! 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist, RFI ARRL Asst. Director,

Re: [Elecraft] K4D questions - diversity, HDMI, Ref In

> On Dec 2, 2020, at 9:23 AM, William Hein wrote: > > Back to the phase locked receivers in the K4D. Does the K4HD retain this > feature? I am wondering if the Superhet circuitry would mess up the phase > coherence? The HDR (superhet) module is phase-locked at the IF. At the LO injection

Re: [Elecraft] Arecibo antenna collapses

Indeed they do: https://www.nature.com/articles/d41586-019-02790-3 73, Bill-AK5X > On Dec 2, 2020, at 11:56 AM, Fred Jensen wrote: > > "A billion here, a billion there ... pretty soon you're talking about real > money." > > Everett M.

Re: [Elecraft] K4D questions - diversity, HDMI, Ref In

Wayne, Back to the phase locked receivers in the K4D. Does the K4HD retain this feature? I am wondering if the Superhet circuitry would mess up the phase coherence? If so, is there a way to bypass the K4HD Superhet circuits when not (for example) operating in a HF contest M2 or MM? 73 Bill AA7xT

[Elecraft] Kinda cool graphic of solar activity

>From ESA http://www.esa.int/var/esa/storage/images/esa_multimedia/images/2020/11/soho_25_years_of_solar_imaging/22352502-1-eng-GB/SOHO_25_years_of_solar_imaging_pillars.jpg __ Elecraft mailing list Home:

Re: [Elecraft] Arecibo antenna collapses

It will indeed be interesting to see if Arecibo is rebuilt. However, the Chinese have built and opened one twice the capacity of Arecibo and it is open to the scientific community of the world. This was posted by Steve WX2S on another reflector. 73 Darrell AB2E

Re: [Elecraft] Used antenna - Arecio antenna collapses

Tragic. Anyone who has visited it in the past will be saddened to see its condition now. I was there in the 80's. I went on a lark, traveling by "publico" from San Juan where my ship was docked for a few hours. I had trouble even finding the place until I found out it was referred to by

Re: [Elecraft] KPA500/KAT500 and RTTY

Dave, I have done many RTTY contests and regular qso's using the KPA500/KAT500/K3 over the last few years. I run full 500 watts with no problems, the temp gets up to the 60 to 65 range a lot when calling CQ in a contest, or during a 10 minute tx.  If the temp gets to 70 then the fan kicks

Re: [Elecraft] KPA500/KAT500 and RTTY

Thanks sir... 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist, RFI ARRL Asst. Director, NW Division, Technical Resources On 12/2/20 8:24 AM, Gordon LaPoint wrote: Dave, I have done many RTTY contests and regular qso's using the

Re: [Elecraft] Arecibo antenna collapses

This is certainly getting way off topic on the Elecraft reflector, but I can’t resist mentioning that I have visited the FAST telescope in Guizhou Province. Here is a brief explanation from my trip notes (we were guests because my wife is an astronomer with many Chinese colleagues). It’s odd

[Elecraft] K3s / P3 For Sale

For Sale Elecraft K3s with P3/SVGA $2995.00 USPS Money Order Split Shipping to Lower 48Negotiate Other Shipping Serial #10939 K3s 100 watt - KAT3A internal tuner Filters: Slot #1 INRAD 13 KHZ  - Slot #2 open - Slot #3 KFL3A  2.7 KHZ Elecraft   Slot #4 KFL3A  2.1 KHZ Elecraft by INRAD  - Slot #5 

Re: [Elecraft] Arecibo antenna collapses

"A billion here, a billion there ... pretty soon you're talking about real money." Everett M. Dirksen [SK] Senator I believe there's a larger [and newer] one in China.  Andy's [AE6Y] wife is an astronomer and astrophysicist and I she mentioned it in a really cool presentation to the Northern

Re: [Elecraft] K4D questions - diversity, HDMI, Ref In

Thanks again, Wayne. I see a K4HD in my future... 73 Bill AA7XT *Bill Hein* *Sound Business Strategies, LLC* *m 970-628-5120* *b...@soundbusiness.us * *The information contained in this transmission may contain privileged and confidential information, including patient information protected

Re: [Elecraft] KX2 & FT8

Rick, Thanks for the post. I don't need real time "time" for things these days...if I do, I turn to an RTOS...but I am naive in this area. Since reconfiguring my Windows time specs, including not using the windows.time server, I have not seen a time offset exceeding 0.5s...in fact, the highest I

[Elecraft] KPA500/KAT500 and RTTY

Hi, Any recommendations as to the max power I might run using a KPA500 and KAT500, on say, a three to five minute transmission? Also, what is the recommended max temp for the PA on this device as measured by the KPA500? -- 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer

Re: [Elecraft] Used antenna - Arecio antenna collapses

Sorry, not funny. Arecibo was a great site and there are a number of Hams that are part of the dish and who were employed thanks to the installation. It is a pretty sad day, not only for the loss of technology, but also their livelihood. Mike va3mw On Wed, Dec 2, 2020 at 9:01 AM

Re: [Elecraft] Used antenna - Arecio antenna collapses

Pick up only. Bring a big truck. K4TO On Wed, Dec 2, 2020 at 5:52 AM Douglas Hudson wrote: > If you want a good buy on a used, high gain antenna, the Arecibo radio > astronomy antenna will soon be up for grabs. Sold as is, where is. Some > assembly required. > > >

Re: [Elecraft] Used antenna - Arecio antenna collapses

EME (Earth - Mars - Earth) ? :-) 73, Bill WE5P Comfortably Numb > On Dec 2, 2020, at 08:43, Dave Sublette wrote: > > Pick up only. Bring a big truck. > > K4TO > >> On Wed, Dec 2, 2020 at 5:52 AM Douglas Hudson wrote: >> >> If you want a good buy on a used, high gain antenna, the Arecibo

[Elecraft] Arecibo radio telescope

For another perspective on the loss of the Arecibo radio telescope, see https://tinyurl.com/y4u3dm88 73, John Gibson, no8v __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

[Elecraft] Another perspective on the Arecibo Telescope

To see another perspective on the Arecibo radio telescope, read 73, John Gibson, no8v __ Elecraft mailing

Re: [Elecraft] Used antenna - Arecio antenna collapses

There are some interesting tidbits about Arecibo: Joe Taylor, K1JT, or wsjt-x fame, did some of the work that lead to his Nobel Prize at Arecibo. His also mounted an 'expedition' in April 2010 to use the Arecibo Radio Telescope to conduct moonbounce with Amateurs around the world using voice,

[Elecraft] Elecraft Kit Assembly

When assembling the KAT500 kit yesterday, I found it frustrating trying to get the nuts started on the connector screws. Then I remembered assembling Heathkits, like 50 years ago. Heathkit provided a little plastic tube thingy for starting hex nuts. (I'm sure some of you other OF's remember

Re: [Elecraft] Elecraft Kit Assembly

Probably one of Heath's greatest 'inventions.'   I also have one or two and they do come in handy. Enjoy the new amp! 73,  Ron   WA2EIO On 12/2/2020 3:35 PM, K9MA wrote: When assembling the KAT500 kit yesterday, I found it frustrating trying to get the nuts started on the connector screws.

Re: [Elecraft] Elecraft Kit Assembly

I can't speak to the KAT500 kit but for other Elecraft kits I have found that magnetized screwdrivers and/or nut drivers really help you breeze through the assembly. 73, Drew AF2Z On 12/02/20 15:35, K9MA wrote: When assembling the KAT500 kit yesterday, I found it frustrating trying to get

Re: [Elecraft] Elecraft Digest, Vol 200, Issue 3

Just before the cable failures a couple of weeks ago SETI did a webinar on the very subject. What I took away from it was that the future of radio astronomy lies in VLBI arrays rather than wide-diameter dishes, and that for economic as well as electronic reasons the direction is toward more

Re: [Elecraft] Elecraft Kit Assembly

On 12/2/2020 12:35 PM, K9MA wrote: I looked in the toolbox, and there were two of them! (They're still red.) Me too. Given all the hex nuts in the KAT500 kit, if I hadn't already had them, I'd have been glad to pay an extra 10 cents or so if one were included with the kit. Me too! 73,

Re: [Elecraft] K4 Reports

I don't recall an avalanche of questions with the K3, but I do recall a lot of impatient purchasers.  Once shipments began, they proceeded in fairly good numbers which quieted things down and I suspect the same thing will happen when the K4 ships.  Nor is there much need to flood the reflector

Re: [Elecraft] Elecraft Kit Assembly

I use mine all the time for 4-40 nuts. It must be 50+ years old and it has seen better days. Getting a little loose and fuzzy on the end. Tried finding them on the internet machine. I have used small stiff tubing for various size nuts but not the same thing. Good luck, 73 Joe K2UF

[Elecraft] Elecraft K3s For Sale

i am selling my Elecraft K3s and will post here before placing on Ebay. Elecraft K3s - this radio was built by kit and is in excellent condition. - Serial # 10354 - 100W Upgrade - Filters are: 2.7kHz, 2.1 kHz & 400 Hz. - Digital Voice Recorder - ATU - Antenna Tuner - Kit

Re: [Elecraft] Elecraft Kit Assembly

That's been suggested to Elecraft many times over the past 21 years. Wonder if anyone still makes them. My three sleep in their own bin! 73, Kent  K9ZTV On 12/2/2020 2:35 PM, K9MA wrote: When assembling the KAT500 kit yesterday, I found it frustrating trying to get the nuts started on the

Re: [Elecraft] Arecibo antenna collapses

Arecibo was steerable by moving the feed point. They compensated for spherical aberration by using a travelling wave antenna for the feed, and later by using a series of sub-reflectors, the latter in the gondola. The spherical aberration is independent of pointing direction, which, I

Re: [Elecraft] Elecraft Kit Assembly

Looks like Jenson Tools sells them Look Here  https://www.jensentools.com/menda-35120-four-way-nut-starter/p/758ie351 On Wednesday, December 2, 2020, 03:37:55 PM EST, K9MA wrote: When assembling the KAT500 kit yesterday, I found it frustrating trying to get the nuts started on

Re: [Elecraft] K4 Reports

Hi Terry Roughly 2 weeks ago I sent this out. "12 + hours ago, I was lippy toward Elecraft and ate my words 20 minutes later when I was told that my K4 was on a bench getting final upgrades and the thought that it should be out the week AFTER Thanksgiving.. Then next morning I woke up to 80

Re: [Elecraft] Kinda cool graphic of solar activity

It's just a pretty picture.  Not useful for predicting propagation. W7HV On Wednesday, December 2, 2020, 9:35:46 AM MST, Michael Walker wrote: If you really want to learn about the Solar Forecast, watch this. This is all new science to solar storms and the talk directly impacts HF

Re: [Elecraft] Elecraft Kit Assembly

Kent, I bought some on Ebay about 3 years ago. The old ones from my Heathkit days were split and no longer held the nuts. 73, Don W3FPR On 12/2/2020 3:53 PM, KENT TRIMBLE wrote: That's been suggested to Elecraft many times over the past 21 years. Wonder if anyone still makes them. My three

[Elecraft] re Arecibo antenna collapses

Andy's wife is a very famous astronomer! https://en.wikipedia.org/wiki/Sandra_Faber John KK9A Andrew FaberAE6Y wrote: This is certainly getting way off topic on the Elecraft reflector, but I can’t resist mentioning that I have visited the FAST telescope in Guizhou Province. Here is a

[Elecraft] K4 Reports

I know that this group consists of many of us who are very loyal Elecraft customers, many who ordered a K4 in the first hours orders were being taken. My order went in Oct. 1, 2019, so it may be March before I see mine. My guess is a few of us have received their K4’s but are reluctant to

Re: [Elecraft] Elecraft Kit Assembly

Yup, I still have mine from back in the late 60’s as a novice and use it every time I build a kit! Jim / W6JHB > On Dec 2, 2020, at 12:35 PM, K9MA wrote: > > When assembling the KAT500 kit yesterday, I found it frustrating trying to > get the nuts started on the connector screws. Then I

[Elecraft] KPA500/KAT500 and RTTY

While I don't often run RTTY, I do run a good bit of PSK-31, WSJT-X FT-8 and MSK-144 along with CW and SSB modes.   I do watch the PA temp, specially as it nears 65 to 70 degrees C.   I also run with the Fan on #1 or #2 for starters.    I know some will say it doesn't make a difference while