Is the spot on the board for a 6 pin header, behind the Si5351 board, for programming the Arduino chip? If so, how do I interface this with my Arduino board? It would be nice to be able to program the

I would have loved to been a member of 4sqrp group when it started. But better late than never! I asked the question a few weeks ago and got a positive answer back that they are thinking about it. I a

GE Everyone, I received this email today. Any suggestions for William? 72 - Ron - AG1P 4SQRP Volunteer Webmaster

I have been having fun with the Hilltopper 20, making contacts in US out to 1600 miles (CA). No DX yet but cant wait for the CQWW 'test n Nov. What are your Hilltopper stories? Curt KB5JO

Am going to see what can do with CQ WW DX 'test this weekend. Historically they all listening hard for QRP n QRPp.

What are the fuse settings for the current code release? I've done a search and not seen any mention of fuse settings. I plan to burn a version for LCD. TNX! Bob WA1EDJ

I don't have my HIlltopper 20 yet but will soon. My long term goal, after it it working minus LCD is to add one. Is the Lloyd WA4EFS code the solution being used these days? From what I can tell it is

I built both 40 & the 20 meter and both function beautifully. I do not have a display on either of them but I would like to see them kitted with one. I would definitely build 2 more Hi Hi. 4SQRP does

First, the radio sounds great and it seems to put out at least 5 watts, but there are a few problems I have encountered. After trying to match the frequency with the Cal jumper in place, the radio is

I vote for it .... 30 is super for CW. I have both the 20 & 40 and enjoy both. Easy kit to build with top notch instructions with a design that’s hard to beat. Jack ..... WD0CFH Pro Jack R. Dock ... H

Please make available a Hilltopper 30. The 20 and 40 are great kits. 30 meters is a great band, so please seriously consider making a Hilltopper kit available for that band. Lee, w0vt, w5drc

I just ordered a 40 meter Hilltopper and have not built my 20 meter version yet! Curt, KB5JO, a friend of mine, keeps telling me how much fun he is having with his 20 meter version. So even though I h

The radio worked when turned on, and no smoke escaped! Alignment was easy as described in the manual. The receiver is fantastic, and am getting 5W output with a 12VDC supply. One question is whether I

Has anyone simulated the HT20 LPF? Using ELSIE to simulate, must be doing something wrong, seeing 3 dB loss at 14 MHz. Of course a deep 60 dB suppression at 25 MHz. I am using 50 ohm input and 50 ohm

Just want to thank whoever packs these kits with bagged assembly groups keyed to the instructions and the bom. It makes assembly a real pleasure. Someone spent a lot of time, effort, sweat thinking th

Just finished 40 mtr htpr purchased at dayton. little outpt. can barely detect a signal on my 7300 scope. other than reduced audio gain in rx all working. any suggestions? is there a voltage chart? tn

Hello Group, finished my hilltopper 20. But on first pwr up, blew the two (C29,C30) 100mf caps! I replaced the caps, and the AtMega328 and the SE55? audio chip, but really can hear no signals on the r

Hello, I decided I would like to try to progarm the ATMega328p chip with the "standard" hilltopper code posted in the Files section. I have a Arduino Uno board, and a couple of atmega 328 chips. I can

Hey guys had to share this. STL files will be uploaded (work in progress) open for all to use just share any changes. I trimmed the I2C interface right down to the lcd, no header, I also removed the b

Hello group, I had the Hilltopper-40_V2.0 firmware loaded on a second ATMEGA chip to experiment with my HT 40m. In TX or Calibration mode, the output frequency is 7.580 MHz, not the expected 7.030 MHz