Shocking nobody, that would be me. 73, Eric NF6S
ex WD6DBM
?
On Sat, Apr 12, 2025 at 10:24 AM, Doug Hendricks via groups.io <ki6ds1@...> wrote: Elecraft has just announced the AX3 antenna.? 6 bands, 30, 20, 17, 15, 12 & 10m.? You have to have a tuner to use it.? It comes with a very small tripod (3 rods fit in 3d printed base of antenna.? Cost 274 dollars.? Yes, that is correct.? ?It can be seen on their website.? ?I am interested in others opinions of it and if anyone is going to buy one.
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Doug
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Elecraft has just announced the AX3 antenna.? 6 bands, 30, 20, 17, 15, 12 & 10m.? You have to have a tuner to use it.? It comes with a very small tripod (3 rods fit in 3d printed base of antenna.? Cost 274 dollars.? Yes, that is correct.? ?It can be seen on their website.? ?I am interested in others opinions of it and if anyone is going to buy one.
?
Doug
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See you there! --David KM6RI
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I will be at the Baylands starting with lunch. Hope to see many of you.
Hiroki AH6CY
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Fw: [FARS-Announce] FARS March Meeting - Tonight!
Fact Checking: The active cascode
amplifier was invented in 1979 and included in Analysis and Design
of Analog Integrated Circuits, first edition 2001. They are a refinement of
the cascode amplifier which goes back to vacuum tubes. I back in the day, I used discrete transistors for amps into 10's of MHz.
The abstract to Ed's
talk said they were what made the NanoVNA and TinySA possible. These
devices use direct conversion. No amplifier on the front end. Yes,
they have mixers and switches for the input circuits.
The enabling hardware for these amazing devices is mostly the digital chips and a display that can all be powered by a battery.
That said, these
hand held devices are can be really handy.
----- Forwarded Message -----
From: Steve Stearns via FARS-Announce <fars-announce@...> To: 'FARS Announce' <fars-announce@...> Sent: Friday, March 28, 2025 at 11:08:13 AM PDT Subject: [FARS-Announce] FARS March Meeting - Tonight!
Foothills Amateur Radio Society Membership Meeting on Friday March 28 ... Presentation:? Broadband (4 GHz) Precision Amplifiers
Speaker:? Ed Fong, WB6IQN ? Summary:? We are now all familiar with the NanoVNA and the Tiny SA.? There are also numerous digital scopes now that are very affordable.? An example is the DSO03D12 -? a dual trace color portable oscilloscope with probes that easily measures in real time up to 150 MHz.?? This instrument also has built in DVM and signal generator ¨C all for less than $150.? These instruments would have cost in the thousands of dollars 10 years ago. ?Only the most serious hams own expensive HP or Tektronix equipment?? So why are they now all so affordable??? The simple answer is an innovative operational amplifier (¡°op amp¡±) design.? For the last 50 years, op amp design followed a tried-and-true formula that did not change.? Dave Fullagar designed the uA 741 in 1968. ?It had unity gain bandwidth of 1.5 MHz.? True, small incremental improvements happened over the years, such as current mode feedback.?? However, these were evolutionary, not revolutionary.? Steady improvement in semiconductor processing gave incremental gains in frequency response (10¡¯s of MHz at most). ?However, in the early 2000¡¯s a new amplifier topology was invented that allowed controlled high precision feedback gains in the 4-6 GHz range.? This configuration is only now finding its way into amplifier text books.? Ed will explain this new circuit configuration and how it works. ? About the Speaker:? Ed Fong, WB6IQN, teaches RF Wireless Communications and I/O Design Fundamentals for UC Santa Cruz in Silicon Valley. He taught RF Wireless at UC Berkeley from 1998 to 2011.? Ed is the owner of Ed¡¯s Antennas . ?Ed¡¯s DBJ-1, DBJ-2, and TBJ-1, dual- and tri-band antennas are popular with hams, commercial and government users, and were featured in magazine articles in QST (February 2003, March 2007, and March 2017) and CQ (Summer 2012), and reprinted in three ARRL books:? VHF/UHF Antenna Classics (2003), Antenna Compendium Volume 8 (2010), and Portable Antenna Classics (2015).? Ed¡¯s past presentations to FARS include the uSDX+ portable HF transceiver (November 2023), phase-locked loops (August 2023), single-sideband modulation (January 2023), ground-independent vertical antennas (August 2019), and DMR radio (April 2018).
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Re: Does anyone have Eric's email address?
I have Eric's email address now.?
Thanks
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Does anyone have Eric's email address?
Does anyone have Eric's email address or Eric, if you are reading would you please email me at doghouse3@...?? ?
Thanks, Joy
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See y'all for all acts. Best, --David KM6RI
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Re: Question about PayPal?
Thanks, Dave.? Can I call after lunch?? Cliff
On April 3, 2025 12:56:35 PM PDT, "David via groups.io" <dkvarn@...> wrote:
Didn't see your post until now; have sold many items on eBay using PayPal with only minor issues that were fixed. Have also transferred funds otherwise via PayPal with no problem.
Best, --David KM6RI
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Re: Question about PayPal?
Didn't see your post until now; have sold many items on eBay using PayPal with only minor issues that were fixed. Have also transferred funds otherwise via PayPal with no problem.
Best, --David KM6RI
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Re: Question about PayPal?
No one?? Ok, thanks anyway.? On to plan B, whatever that is.? Cliff
On April 2, 2025 12:20:12 PM PDT, "Cliff Sojourner K6CLS via groups.io" <cls@...> wrote:
Hey folks, if you have successfully sold some ham gear and actually received payment via PayPal ...? From EU ...? I could use some free advice.? Been through the online help PP offers, nothing amiss.? I just can't get it to work.? Thanks, Cliff K6CLS. phone 408 234 9281.
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Me three, I plan to be there for lunch and ops
toggle quoted message
Show quoted text
On Apr 2, 2025, at 1:07?PM, David W Crocker via groups.io <dwcae@...> wrote:
Me too. Maybe stay for the para meeting?Dave W6VYC?On Wed, Apr 2, 2025 at 6:22, Hiroki Kato WX looks decent. I plan to be at the Baylands starting with lunch.
Hiroki AH6CY?
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Me too. Maybe stay for the para meeting Dave W6VYC
On Wed, Apr 2, 2025 at 6:22, Hiroki Kato <hiroki@...> wrote: WX looks decent. I plan to be at the Baylands starting with lunch.
Hiroki AH6CY
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Hey folks, if you have successfully sold some ham gear and actually received payment via PayPal ...? From EU ...? I could use some free advice.? Been through the online help PP offers, nothing amiss.? I just can't get it to work.? Thanks, Cliff K6CLS. phone 408 234 9281.
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WX looks decent. I plan to be at the Baylands starting with lunch.
Hiroki AH6CY
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Hiroki AH6CY gave a talk about his Four band portable delta loop a...
Eric et al,
Here is a YouTube recoding of the talk I gave on Wednesday, March 26.
Hiroki AH6CY
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I plan to partake in/of all the festivities.
Best, --David KM6RI
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I will be there for lunch, ops, dinner and Fars meeting.
On Wed, Mar 26, 2025 at 9:31, Hiroki Kato <hiroki@...> wrote: I will be at the Baylands starting with lunch. WX looks good for ops.
Hiroki AH6CY
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I will be at the Baylands starting with lunch. WX looks good for ops.
Hiroki AH6CY
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Two members of this group will be doing qrp talks this year at Pacificon
Two members of this group, Carol Millazo and Hiroki Kato will be giving qrp talks this year at Pacificon along with 4 others.? Here is a list of the talks
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Title:?Upgrading the Tuna Tin "S" - A Synthesized Multi-Band QRP Transmitter
Presenter:?Carol Milazzo, KP4MD
Description:?In the original Tuna Tin "S", an Arduino Nano microcontroller and Si5351 synthesizer module drive an IRF510 MOSFET to a QRPp 0.5 watts output on a single band.? In this session we will review the history and design of the Tuna Tin "S" and discuss how we can improve the MOSFET amplifier's efficiency, raise its output power output to a full QRP 5 watts, and design filters for operation on multiple frequency bands.
?
Title: Home Brewing Portable HF Antennas
Presenter: Hiroki Kato AH6CY
Description: I will present three examples of my home-brewed portable HF antennas.
?
1. A small vertical antenna for the hand-held radios
2. A magnetic loop antenna with a unique remote tuning system
3. A 4-band delta loop antenna
Title:? Construction Techniques for Homebrew Projects for Hams.? Why??
How?? Sources?
Presenter:??Chuck?Adams, AA7FO
Description:
Why?? There is a need to build something of interest or need that isn't
available already or is not within a constrained budget.
How??? A number of techniques that have been used for successful
building of projects will be discussed.
Sources?? Where to find parts?? Where to find projects of interest that
you can build to use and/or learn some area of interest.? Where to get help, if needed.
Title:?Suitcase Portable POTA
Presenter:?Tommy Gober, N5DUX
Description:?For anyone?not?familiar with Parks On The Air, this session will give a brief overview of this "not a contest" that has reinvigorated many long-time hams. Presented by an avid POTA activator that has activated coast to coast and north to south while on work trips, we'll discuss tips, techniques, equipment options and choices, the limitations of being suitcase portable, and the thrill of driving to an unknown park to activate. This session is for newbies and experienced operators alike!
?
Title:?The Pacificon 40, an update to a QRP classic
Presenter:?Yin Shih, N9YS
Description:?Many hams are familiar with or have heard of the Norcal 40.? Designed by Wayne Burdick, N6KR, over 30 years ago, it was a classic design that garnered attention for the Norcal QRP Club and was a seminal event in the birth of Elecraft. Recently, the California QRP Club thought to ask "If we were to attempt a Norcal 40 kit, what would it look like?", which resulted in an updated implementation called the Pacificon 40.? The Pacificon 40 blends the vintage Norcal 40 design with some modern day techniques and components.? This talk will describe the adaptations and features of the Pacificon 40.
?
Title: Adapting the PicoRx to a Club Project
Presenter: John Sutter, K6JDS
Description: I will present the CalQRP project version of Jon Dawson's
? PicoRx SDR receiver.? I'll cover inspiration, the design?process, mishaps, and results.? Topics to include requirements,?floorplanning, circuit, PCB, and enclosure design.
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?
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David
Cliff Sojourner K6CLS
David W Crocker