Well, that's very cool, Dave!? I have indeed worked on many of the models of transmitters and receivers over the past 30 years that company has produced.? Anything rugged enough to mostly survive "normal use" from a TV news anchor or videographer for more than a year is a notable piece of equipment in my book, so thanks for your contributions!

Derek, you know what they say about assuming ;)? ?I would never have assumed there was not an earlier company called, "Lectronics" which perhaps was absorbed later in life by some other company, forming the wonderful wireless mic company which Lectrosonics is.? By the way, is that a Nagra I spy in your profile picture?

73,
Matt

开云体育

Yeah, there is. Check out the next hamfest, they're cheap (~ $2 ea)

Mike C. Sand Mtn GA

开云体育

Thanks Bruce, and to Dave and of course to Erick for ALL the little tid-bits necessary for us to enjoy our hobby, bravo.

Mike C. Sand Mtn GA

apologize for bothering you again, but I’m still awaiting feedback regarding the modification of the external attenuator saving behavior in the TinySA. Unfortunately, no one has responded so far. It appears that the issue may be specific to my device. Here’s the scenario: although the attenuator is being saved, when switching between modes (analyzer and generator) or entering a measurement option (MEASURE), the 30 dB external attenuator I had set gets lost. Would it be possible to implement permanent saving of the attenuator within the configuration, similar to fixed calibration?

I understand that the TinySA doesn’t solely use the RTC RAM for saving all configurations. You likely already use bit masking to expand the RTC RAM addresses. However, the TinySA has several boolean options that are lost and could potentially be stored using just one RTC RAM address for 32 settings:

• SPUR REMOVAL
• PULSE HIGH
• LO OUTPUT
• PROGRESS BAR
• DIRECT MODE
• LINEAR AVERAGING
• HAM BANDS

?

I attribute some of my eye and skin damage to it, confirmed by doctors. Talk about horrors.

Now that I have had a day (and morning coffee) I see that?I am the one who also didn't detect the sarcasm font ;)? Ha!? Thanks, Mike!

On Tue, Jun 4, 2024 at 11:29 AM, Bruce Hawkins wrote:

big radio noises heard coming from Earth.

This info about the VLF signals is interesting.? Too bad the TinySA is virtually deaf at these frequencies, but understandably; a highly sensitive and selective VLF/ULF receiver is oddly difficult (read "expen$ive) to create.

Lectronics

Good morning, Erik,

I apologize for bothering you again, but I’m still awaiting feedback regarding the modification of the external attenuator saving behavior in the TinySA. Unfortunately, no one has responded so far. It appears that the issue may be specific to my device. Here’s the scenario: although the attenuator is being saved, when switching between modes (analyzer and generator) or entering a measurement option (MEASURE), the 30 dB external attenuator I had set gets lost. Would it be possible to implement permanent saving of the attenuator within the configuration, similar to fixed calibration?

I understand that the TinySA doesn’t solely use the RTC RAM for saving all configurations. You likely already use bit masking to expand the RTC RAM addresses. However, the TinySA has several boolean options that are lost and could potentially be stored using just one RTC RAM address for 32 settings:

• SPUR REMOVAL
• PULSE HIGH
• LO OUTPUT
• PROGRESS BAR
• DIRECT MODE
• LINEAR AVERAGING
• HAM BANDS

I use a bit masking function that converts one 32-bit address into 32 1-bit addresses. When byte storage is needed, I use one 32-bit address for 4 1-byte addresses. Here’s an example of how I achieve 32 boolean addresses using only RTC address 0:

void Save_Memory_32Bit(uint8_t byte_address, bool value)
{
    uint32_t Bank_32Bit = rtc_read_ram(0);
    bitWrite(Bank_32Bit, byte_address, value);
    rtc_write_ram(0, Bank_32Bit);
}

bool Read_Memory_32Bit(uint8_t byte_address)
{
    uint32_t Bank_32Bit;
    Bank_32Bit = rtc_read_ram(0);
    return bitRead(Bank_32Bit, byte_address);
}

Perhaps this approach will free up more space in the RTC RAM and allow for saving the external attenuator state.

Lastly, I want to express my gratitude for your work and dedication in developing the TinySA. Your efforts are greatly appreciated!