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Thanks Oliver. This is a huge effort! And, very exciting! dave,n3ds

Oliver, success, I went back and re-flowed all of the connections on U15 on the LPF control board and checked continuity on all the pins again. Everything was ok. Then I remembered that there was a

I wanted to share a little information on how I'm going to go about restructuring the T41 code. The most difficult bugs to track down in the current code have been those caused by the radio being in

The Ver066.9 code doesn't have a menu option called "Display Options" -- which one did you select? [image.png]

The daisy chain test sounds like it might be a clue. Does your radio find the BPF if that board is connected to the main board? It uses the same I2C bus, so this will confirm that the problem is not

Invoice Incoming Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand

I reloaded and cleared mwmory Duplicated it! Menu Display Options select cancel press Select Back to partial display and rebooting Tim

Bill, I would like to order the following: 1 - 20W DL and 40dB Attenuator 1 - 20A Distribution Kit 1450 Lester Court Merritt Island, FL 32952

No joy. I checked continuity from U15 to the band header pins, OK. I checked all IC pins for solder bridges and opens and all resistors and capacitors. Powered the board externally and checked all

..And my first transmitter had one tube. A 6V6. It was an article in Popular Electronics.... or maybe Electronics Illustrated. I built it on a baking tin I stole from my mother. The final coil was

As of close of business today, I'll have to stop talking board and kit orders for the T41 and associated electronics. I'm preparing for Hamvention now. We will have plenty of boards, kits, and books

Similar here, I built projects from Popular Electronics and other mags. Got side tracked by fumes in 60's-70's didn't rekindle until I got into Boy Scouts with son in 90. Upped to life shortly

Sounds like we got started about the same way. My first transmitter was HB...two tubes, 15W. The receiver was a used S40B that I got for $25 and my antenna was a 300Ω twin-lead dipole cut for 40M. I

Jack, I couldn't help but smile when I read that you got your ARRL Life Membership in 1972, I did too. I built my novice transmitter in high school electronics shop from a QST article ... I still

Thanks Tim, I'll try to recreate and fix this bug.

Here is sequence, fairly accurate age you know! Previous session I finished TX IQ cal on 40, 20 and 75M bands. I planned on making first Q with this build today. Fired it up, all good, set power out

Oliver, thanks for the reply. I thought I had traced out all of the pins on the 23017, but I may have missed something. I'll check things again. About the AD7991, "BIT" has been showing an Ad7991 at

OOPS… was reading linearly and missed this response. Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton,

Then we are fine. Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand

The LPF control cable connects to the “BANDS” connector on the MAIN board, J12…. and to the “BANDS” connector on the LPF Control board J21. It should be on on WIRE2 at hex address x25 which