|
Re: Bill's SSB Contest Station J62K 28.452
开云体育The “59” thing is automatic but most signals really were 59…. Repeats were more due to noise. ?Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: www.VillaGrandPiton.com email:??bill@... ? On Mar 2, 2025, at 5:02?PM, Greg KF5N via groups.io <greg.electricity@...> wrote:
|
|
Re: Bill's SSB Contest Station J62K 28.452
开云体育Yeah check this out: ??Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: www.VillaGrandPiton.com email:??bill@... ? On Mar 2, 2025, at 5:27?PM, Greg KF5N via groups.io <greg.electricity@...> wrote:
|
|
Re: RF Board update.
开云体育You have what you are asking for. ?Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: www.VillaGrandPiton.com email:??bill@... ? On Mar 1, 2025, at 9:19?PM, Phil Taylor via groups.io <philbyt1@...> wrote:
|
|
Re: RF Board update.
开云体育Same RF board. ?Just changed the two op amps for lower noise parts. ? You can still use the original parts of you want… and the bom was updated a couple of months ago. ?Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: www.VillaGrandPiton.com email:??bill@... ? On Mar 1, 2025, at 12:45?PM, Doug W via groups.io <dougwilner@...> wrote:
|
|
Alternative to Pico?
All: I've also experimented with the XIAO processor from Seeed Studio. It's about the size of your thumbnail and costs $5: It has 256K of flash and 32K of SRAM with 19 general I/O pins, ADC/DAC pins. I have used earlier versions of this microprocessor and is compatible with the Arduino IDE and libraries...I haven't found a library yet that didn't work, but there may be some. I use this over the Nano--the clock is 2x faster, a lot more memory, and a much smaller footprint. I don't know if it speed is fast enough for T41 I/O duties. More specs at: Jack, W8TEE -- Jack, W8TEE |
|
RP Pico 2
All: I just read that the RP Pico 2 is now capable of running at 200MHz, up from 133MHz earlier. Using CMake, the new speed setting in the compiler is a symbolic constant: PICO_USE_FASTEST_SUPPORTED_CLOCK=1. I don't know if the Arduino IDE recognizes this or not. There's been interest here in using the Pico as a second I/O processor in the T41. The Pico W has 26 I/O pins, 2Mb of Flash, and WiFi/Bluetooth support. No price was given for the Pico 2 nor did it say anything about WiFi/Bluetooth support, but the standard Pico W is about $8-$10. If I see additional info, I'll post it here. Jack, W8TEE -- Jack, W8TEE |
|
Re: fix bent heatsink with 3d printed combs
开云体育Huh… pretty ingenious… ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Doug W via groups.io
Sent: Wednesday, February 26, 2025 1:11 PM To: [email protected] Subject: [AmateurRadioBuilders] fix bent heatsink with 3d printed combs ? Yesterday's delivery brought a bent heatsink.? I didn't want to throw out something that was still usable or use it so mangled so I did what we do.? I drew and printed 2 combs in a few minutes to try to fix it in two steps.? I might try another round with tighter tolerances but I can live with this.? I did not take pictures along the way but this should explain... ? tap the first comb down into the fins before the damage.? using a wood block (or you could print something) so you don't do more damage, drive the comb all the out the damaged end.? repeat with the second comb. ? ? ? Happy to share stl's if anyone cares.? This is the heatsink ? I bought the 150mm variation that will eventually go on a K9HZ 20w PA. ? Doug AC9RZ |
|
Re: fix bent heatsink with 3d printed combs
Doug, Great idea! Jack K3JAS
On Wednesday, February 26, 2025 at 02:11:28 PM EST, Doug W via groups.io <dougwilner@...> wrote:
Yesterday's delivery brought a bent heatsink.? I didn't want to throw out something that was still usable or use it so mangled so I did what we do.? I drew and printed 2 combs in a few minutes to try to fix it in two steps.? I might try another round with tighter tolerances but I can live with this.? I did not take pictures along the way but this should explain...
?
tap the first comb down into the fins before the damage.? using a wood block (or you could print something) so you don't do more damage, drive the comb all the out the damaged end.? repeat with the second comb.
?
?
?
Happy to share stl's if anyone cares.?
This is the heatsink ? I bought the 150mm variation that will eventually go on a K9HZ 20w PA.
?
Doug
AC9RZ
|
|
fix bent heatsink with 3d printed combs
Yesterday's delivery brought a bent heatsink.? I didn't want to throw out something that was still usable or use it so mangled so I did what we do.? I drew and printed 2 combs in a few minutes to try to fix it in two steps.? I might try another round with tighter tolerances but I can live with this.? I did not take pictures along the way but this should explain...
?
tap the first comb down into the fins before the damage.? using a wood block (or you could print something) so you don't do more damage, drive the comb all the out the damaged end.? repeat with the second comb.
?
?
?
Happy to share stl's if anyone cares.?
This is the heatsink ? I bought the 150mm variation that will eventually go on a K9HZ 20w PA.
?
Doug
AC9RZ
|
K9HZ
Jack, W8TEE