Probably everybody is so busy using they haven't got time to email. Cheers, Will ZL1TAO

HI Nick, Yes, a good idea It could be used to level off the output of the signal before taking measurements. Cheers, Will

Hi Dave, Ditto. Cheers, Will

Hi All, Has anybody tried the digital attenuator chips ( Peregrine Semiconductor's PE4306 )that go down to 31 db? Here is a kit using the chip: https://www.sv1afn.com/rfattenuator.html No interest in

Hi John, The answers are in the message archive. Basically as you surmised they are/were for protection of Arduino analogue input. Originally a value of 5.1V was given. However after problems with the

Hi Ken, He is on holiday for a few weeks. Cheers, Will

Glenn. If you are not in a hurry I might be able to sort you out a set in about a month. Subject to health and other things. I bought 20 so should have a spare set IF they match well. I checked to see

Jim, Now you have success with Mini how about trying a Digispark? Uses an ATTINY85 micro so has limited pins available. There are two flavours, one plugs into USB socket on computer, other uses a lead

Hi Jim, Try not crossing the Rx/Tx would be my first thought. Cheers, Will, ZL1TAO

Bill, Element14 in VK have the crystals available. Besides a couple of expensive types they also have a sub dollar type. All seem to have the same characteristics. Cheers, Will, ZL1TAO

The type I uses DDS modules with two rows of connections at one end and single row at the other. Type II uses one row of connections at each side and has a little square blue preset. Both modules are

One thought, is it possible that there is hum on the power to the Nano or being picked up somewhere in AD8307 circuit. It would probably not show in a decent digital meter & definitely wouldn't in an

Hi Everyone, It is recommended to use a square wave at 10 Nhz to calibrate power meter. Is it essential to use 10Mhz? Would 1Mhz be acceptable? Rather than use a logic IC oscillator to get the square

Tried to join EMRFD group but have heard nothing. Anyone else have troubles. Cheers Will ZL1TAO

Hi all, My boards seem O.K. I plan to use two of the MK II boards with a nano or pro mini to produce I & Q frequencies for a receiver. I had bought the DDS and Nano & pro mini but was still learning m

If I understand correctly it is the layout of the DDs rather than the chip. The type II have a little blue trimpot on them and the pins are along the sides. Type I have a single row of pins at one end

Hi All, I had a thought, (Dangerous, I know. Hope the noise of it didn't keep any of the other ZL's awake). Are some of the problems with measurements due to mains hum getting into the Powermeter or P

Hi, You normally have a folder that has ALL your sketches in various sub-folders. the Arduino IDE requires each one be in a sub-folder. You normally have your not stock Arduino libraries in the folder

Hi Jim, I'll take set. All smt front end power meter, and "other - blue trimmer" PHSNA with Era3+. I'm also interested in Larry, W2HHV idea of extra shield to take another dds board for I/Q use. I mig

Hi Folks, Just had a massive earthquake here. We survived, all other kiwi's on list O.K.? Cheers Will ZL1TAO