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Re: Help: Audio is pumping on bands 17 and 15.
Correct... but NOT if the ATTINY is missing but the config thinks it is!!! Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch ¨C
By K9HZ · #33969 ·
Re: LPF question
If you will eventually use the 100W PA¡­ yes you want 200V caps! Here is a simpleton approach (there is way more to this, but just for reason): P=IE, E=IR, so P=E^2/R ¡­ so E = SQRT (P * R)¡­ if
By K9HZ · #33968 ·
Re: T41 Hilbert Filter Design
Hey Terrance¡­ you put together a really special variation of the T41 V12¡­ the Beacon receiver¡­ and the remote screen. Make sure Al gets those into his pages too! Dr. William J. Schmidt - K9HZ
By K9HZ · #33967 ·
Re: JLCPCB Price Increase
It¡¯s great Glenn. No complaints here at all in VK land. Regards Phil VK2KKZ
By Phil Taylor · #33966 ·
Re: Help: Audio is pumping on bands 17 and 15.
I've pushed a bug fix to the Ver66-9 github repo to get rid of the audio artifact on shutdown. Does this fix your problem when you enable MAIN_BOARD_ATTINY_SHUTDOWN?
By Oliver KI3P · #33965 ·
Re: T41 Books for sale - signed copies Latest version
*** Was that through Pirate Ship? - Jerry, KF6VB
By jerry-KF6VB · #33964 ·
Re: T41 Books for sale - All gone!
I am down to just one book, so I will probably cut off the offer at this time. Sorry anyone missed out. Thanks very much to those who replied. Regards, Al AC8GY
By Albert Peter · #33963 ·
Re: T41 Books for sale - signed copies Latest version
Keith, It looks like about $60 for shipping alone. I only have one left. It does not seem like our signatures are worth $60. How about if I scan one of the signature pages and personalize it to you n
By Albert Peter · #33962 ·
Re: Help: Audio is pumping on bands 17 and 15.
Thanks Oliver. My rig does have the ATTiny in place and it is programmed.
By bty84827531 · #33961 ·
Re: Help: Audio is pumping on bands 17 and 15.
The main board (optionally) uses an ATTiny85 to control the power rail. When you press the power on/off push button on the front panel the Teensy code executes a function (ShutdownTeensy) in which you
By Oliver KI3P · #33960 ·
Re: Help: Audio is pumping on bands 17 and 15.
Oliver, yes it does! Howcome? BTW there is still a loud "pop" when the rig is turned on. This has been there all along but was a minor issue. Roger G8JWT
By bty84827531 · #33959 ·
Re: T41 Books for sale - signed copies Latest version
I just shipped a small UPS box to the UK and it was $58. And that is the cheapest price (would not be less at zero weight). USPS wont even deliver a package to the UK anymore. Dr. William J. Schmidt -
By K9HZ · #33958 ·
Re: JLCPCB Price Increase
*** Sigh. That's what it cost here in the good old days... - Jerry, KF6VB
By jerry-KF6VB · #33957 ·
Re: JLCPCB Price Increase
I just ordered a PCB from JLC. Cost was US$2?? plus they charge GST 10% (sales tax in VK) Shipping $1.50? global standard direct or DHL $18.00 Glenn
By glenn · #33956 ·
Re: T41 Books for sale - signed copies Latest version
Hi Al your post said " Outside the US, international shipping applies," which suggests you'd be willing to try international shipping. So any idea what it would cost to send to England/Great
By G0GNL · #33955 ·
Re: Help: Audio is pumping on bands 17 and 15.
Yeah, that's probably an unnecessarily long wait. The ATTiny85 code has a couple of delays that result in the long wait. It can easily be shortened by changing these two lines:
By Oliver KI3P · #33954 ·
Re: Help: Audio is pumping on bands 17 and 15.
*** That has always mystified me. The way it's *supposed* to work is: You press the power button. The AtTiny tells the Teensy - "It's time to shut down". The Teensy quickly cleans up and tells the
By jerry-KF6VB · #33953 ·
Re: Help: Audio is pumping on bands 17 and 15.
I¡¯ll check that out tomorrow and get back to you. Without a carrier tuned in the background noise pulses in a similar way. It¡¯s more pronounced on 17m than 15m.
By bty84827531 · #33952 ·
Re: Help: Audio is pumping on bands 17 and 15.
Do you know what else that sounds like? The audio artifact you get after you press the On/Off button and are waiting for the ATTiny to turn the power off. Does this sound go away if you comment out
By Oliver KI3P · #33951 ·
Re: Help: Audio is pumping on bands 17 and 15.
That almost sounds like the keyer is on. Jack, W8TEE
By jjpurdum · #33950 ·