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Re: Tool advice: contemporary oscilloscopes and Spectrum Analyzers
Here's a post in a thread that's possibly of interest on scopes, over on a different forum:
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? ??/g/QRPLabs/message/27896 Siglent, Rigol, Hantek, are good places to start for low cost new gear. But you don't necessarily want to buy from the lowest bidder, there are differences that make the cheapest ones cheap.? Competition is pretty fierce now, and there are corners getting cut that are not obvious from their adverts. I've got a Rigol DS1052E, bought a few years back when $400 for a 50mhz BW scope was quite the deal. Especially since this particular scope can do 100mhz if loaded with firmware for their 100mhz scope..? I'm not aware of any other scope for which a firmware upgrade removes a marketing gimmick like that, some people seem to assume it's true of all the new DSO's. I may need to upgrade, a 200mhz BW scope is now cheaper than what I paid for this thing.? But take a hard look at that 30+ year old stuff. Many folks prefer a good analog scope over the new wiz-bang DSO's. I've never had a spectrum analyzer, perhaps someone else can speak to that. I see lots of Rigol's getting used to poke at the uBitx here in the forum. And a few brave souls who have built the W7ZOI Spectrum Analyzer, or variants thereof such as Farhan's specan.? Check out? ?/g/HBTE? if interested in homebrew test gear. It spun off of this Bitx20 group when folks here got tired of all the non-Bitx traffic. Jerry, KE7ER On Wed, Nov 7, 2018 at 07:50 AM, iz oos wrote: Hi, a friend wants to replace his 30+Y old stuff. I said experienced hams use Rigol stuff, which good models would you suggest that do not cost a leg to be used with modern and vintage PA/rigs? |
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Re: Boy Scout activity event
Jack Purdum
Great idea! Then, after a contact with some distant station, he could point to it and state that the rig costs less than $150 to set up. Or say: "Mow my lawn 6 times and I'll give you the station!" I think emphasizing the low cost is important to them. Jack, W8TEE
On Wednesday, November 7, 2018, 11:28:35 AM EST, James Lynes <jmlynesjr@...> wrote:
Maybe also set up a low cost uBitx based demo FT8 station. This is the texting generation after all.
James |
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Re: Boy Scout activity event
¿ªÔÆÌåÓý
As old school as this might sound, I always found having the scouts visit a shack during the day and letting them experience (or just listen) working 20-meter dx with equipment humming and beams aturning worked really well. Contests with pile ups and stations
on the Black Sea always produced ooohs and ahhhs.? I showed them stuff you can't do with a cell phone and homebrew equipment like amps with tubes afire was a nice touch.
Pat AA4PG
http://www.cahabatechnology.com/aa4pg.html
From: [email protected] <[email protected]> on behalf of Jeff@... <Jeff@...>
Sent: Wednesday, November 7, 2018 9:48 AM To: [email protected] Subject: Re: [BITX20] Boy Scout activity event ?
This sounds like a ton of fun!
How about a ham radio escape room? Make up a fictional scenario whereby the kids must assemble a radio station to call in a rescue or pass on secret spy intelligence, etc. Have the kids form small groups of 2-3 to work on the different parts, such as cutting the dipole, soldering the last couple parts on a Pixie kit, building a clothespin cw key, translating the mayday or spy message into Morse and sending it. Alternatively, you could contrive a search and rescue game where you have people hiding in need of rescue, rescuers waiting for calls, cached resources such as food and medicine, etc. ?The kids travel over the property and use the radios to coordinate the appropriate responses to each discovery.? Now I¡¯m all excited to create something like this in my area. Thanks for the inspiration! Jeff, WJ3FF |
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Re: Boy Scout activity event
¿ªÔÆÌåÓýWonderful... scouts and spies... all kids must learn Morse Code at certain point of their progression. They play with it using flashlights, why not use the real thing, introduce them to CW. Heinz, OA4DPH On 07/11/2018 10:48,
Jeff@... wrote:
This sounds like a ton of fun! |
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Re: Boy Scout activity event
This sounds like a ton of fun!
How about a ham radio escape room? Make up a fictional scenario whereby the kids must assemble a radio station to call in a rescue or pass on secret spy intelligence, etc. Have the kids form small groups of 2-3 to work on the different parts, such as cutting the dipole, soldering the last couple parts on a Pixie kit, building a clothespin cw key, translating the mayday or spy message into Morse and sending it. Alternatively, you could contrive a search and rescue game where you have people hiding in need of rescue, rescuers waiting for calls, cached resources such as food and medicine, etc. ?The kids travel over the property and use the radios to coordinate the appropriate responses to each discovery.? Now I¡¯m all excited to create something like this in my area. Thanks for the inspiration! Jeff, WJ3FF |
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Re: Apparent component swap in design and assembly of pc board v3
#ubitx-help
Mine is like yours, injecting a signal of around S3 was clearly audible anyway, that swap does not jeopardise anything. Il 07/nov/2018 03:05, "Howard Fidel" <sonic1@...> ha scritto:
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Re: the cause for the spurs, found!
Sascha,
Have you checked the wiki and??? Info in both places. The bias at Q20 should not be about 6V.? It should be more like 9V. Reason for this is the ideal bias is about 10mA and at 6V collector its more like 36ma and that's very high.? ? Also the two transistors (Q21,22) cause a 1.5V offset and we want the emitter of Q22 at more than 4.5v (+-1 V). Allison |
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Re: Boy Scout activity event
If you are looking for a hands-on?project I suggest the Clothespin Key- I would also suggest sending them home with links to a variety of radio-related resources- I would especially direct them to the Icom - Zack & Max Comic books and the online SDR for them listen to later () On Wed, Nov 7, 2018 at 9:22 AM Art Olson <olson339@...> wrote: I am looking for some ideas that can be used in a 30 minute window, or less, to introduce ham radio to a dozen scouts. My idea is to employ a few HTs in simplex mode, divide the the groups into 2 or 3 per team. Have each team search for something ( not defined) using the HTs and clues to where the something is located. Each team will have a licensed operator with them during the activity. Also this will be an evening event in a church activity building. Any ideas welcome. This is an opportunity to spark interest and get involved for the scouts. |
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Re: Boy Scout activity event
Jack Purdum
This is how I got started in ham radio in 1954. We did a field trip to W8FTQ's QTH in Medina, OH, to hear his weekly schedule with his son...in SOUTH AFRICA!! The hook was set and I've been licensed ever since. That was then...this is now. My experience with HT's is that young kids today have cell phones and, more than once, I've been asked: "Why get a license when I can do the same thing on my cell phone?" I point out that with ham radio, you can control things yourself...you don't need a cell tower. I usually point out that the storm in Sandy Hook, NJ, took out every mode of communications except ham radios. In some cases, we were the only means of communication. Be prepared for similar questions. Another issue I've mentioned before: Our club had a GOTO station at Field Day and we had a 13 year old who talked to a guy in CA and was so excited he could barely contain himself. After about an hour at the radio, his mother showed up and he literally burst telling her what he had just done. She said: "It looks like a wonderful hobby, but where are you going to get the thousands of dollars for the radio?" The boy looked like he had been shot.This is where I would drag out a ?BITX, hold it up, and say: "Add a battery, a $20 antenna, $130, a license, and you can start talking to the world yourself."? I think a low-cost entry point is important to lawn-mowing budget (scout-aged) people and their parents. Your planned activity is a great one and I'm sure they'll have fun doing it. That said, I would have some pictures of your rig at home and tell them that, with it, you have made friends and talked with people all over the world. Now, if someone can just tell me how to sell learning CW to my club members, I'll die a happy camper. You'd be amazed how many people have to re-arrange their sock drawer on the very day I suggest for a CW class...
On Wednesday, November 7, 2018, 9:22:33 AM EST, Art Olson <olson339@...> wrote:
I am looking for some ideas that can be used in a 30 minute window, or less, to introduce ham radio to a dozen scouts. My idea is to employ a few HTs in simplex mode, divide the the groups into 2 or 3 per team. Have each team search for something ( not defined) using the HTs and clues to where the something is located. Each team will have a licensed operator with them during the activity. Also this will be an evening event in a church activity building. Any ideas welcome. This is an opportunity to spark interest and get involved for the scouts. 73 Art N2AJO? |
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Re: weak signal fun
#ubitx
Joe Puma
¿ªÔÆÌåÓýAhh the good DP0GVN station in the Antarctica. Looks like we reach the same stations abroad.?The bands are not dead they¡¯re ?just not doing SSB :) Joe On Nov 7, 2018, at 12:37 AM, Marc Jones via Groups.Io <gw0wvl@...> wrote:
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Boy Scout activity event
I am looking for some ideas that can be used in a 30 minute window, or less, to introduce ham radio to a dozen scouts. My idea is to employ a few HTs in simplex mode, divide the the groups into 2 or 3 per team. Have each team search for something ( not defined) using the HTs and clues to where the something is located. Each team will have a licensed operator with them during the activity. Also this will be an evening event in a church activity building. Any ideas welcome. This is an opportunity to spark interest and get involved for the scouts.
73 Art N2AJO? |
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Re: ?BITX: CAT connection
I have set mine up through the USB to work with N1MM logger Plus and it works just fine. As said before set it up as if it is an FT817 and it will do everything even the CW keying. My uBitx is set up as radio number 2. Presently I Am using Memory manager the new version 1.1 (I think) to set up, the WSPR beacon but cannot get the uBitx to load the settings I Have uploaded with the Manager. Does anyone know how to do this? |
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Ubitx wiring harness pics
Prathap Naidu
¿ªÔÆÌåÓýHi Gregory Hope these pics may help in preparing the wiring harness to ease wiring & tracing Happy homebrewing best 73 Pop VU2POP ? 
IMG_20180815_113944_2.jpg
IMG_20180815_113951_2.jpg
IMG_20180815_114000_2.jpg
IMG_20180815_105048~2_2.jpg
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Anthony Luscre
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