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

I have joined this group, very informative. I have just obtained a Hilltopper 20, and cannot find the section mentioned in the manual about J5 and J6 - I have headers for this, but cannot find the inf

Several posts have referred to the RF power output of QRP rigs including the Hilltopper, the relation to amplifier class, or to final transistor quality, etc. I am curious as to how power is being mea

I built the Hilltoppers 20 I got at Ozarkcon and it went together well. The transmitter puts out almost 6 watts. But in trying to check the receiver, it acted like it was muted. I encountered this sam

I replaced the audio chip in one of my Hilltoppers last night and hooked it to the signal generator. -73 dBm - great! -107 dBm, still great. Then for the more difficult tests. -33 dBm used to send the

I am curious about the performance of the HT-20 LPF. Has anyone measured harmonic suppression numbers? Curt KB5JO

Just finished my HT20 a couple hours ago. I presently do not have any other radio in the house so I couldn't make the initial adjustments. In spite of this situation, I managed to make my first contac

I just finished a Hilltopper 40. It works well, but I'm a little fuzzy on the frequency calibration. I'm using a receiver to monitor and am having trouble matching with the sidetone freq. I noticed th

folks- At this point, I've shipped all but two mod sets for the Hilltopper. Parts are due in today and then I can ship those. About 20 sets have gone out. I was surprised to discover that most of the

gang- As my original post mentioned, fixes 1) and 2) are free for the asking. Please contact me directly for these: davek1swl at gmail.com ----------------------- The price for all three is $7 via Pay

Folks- Here are several easy mods to improve Hilltopper performance. They address audio levels and quality. 1) 'Loud sidetone': The value of R8 (now 22k) can be increased to 47K to 100K. (This change

I'm about to purchase a Hilltopper 40 but first I would like to know how close to 5 watts output I can get from 12 VDC? I built five QCX transceivers and not one of them ever approached 5 watts on 12

This is sort of crazy but it is all in fun. I connected the Hilltopper 20 with Ham Radio Deluxe using CAT. HRD’s VFO-A displays or adjusts the frequency and its VFO-B reflects or adjusts Hilltopper R.

We live and learn Dave. Hi Hi Pro Jack R. Dock ... How about we give GOD a reason to continue blessing America? In defense of America I pledge my life, my fortune and my sacred honor. War does not det

I think you are right Jim. It just bothered me that I had looked at it for several weeks and never really looked at it! Took me about a half hour to get that little jewel out. Used a bamboo skewer to

OK Jim here goes .... I had been looking at this thing for 3 weeks trying to see what was wrong. We had our builders club meeting and Joe (W0MQY) was working on his HT-40 so Bill (WB0LXZ) offered to h

Just finished the Hilltopper 40 build and I want to send kudo's out to all involved in making this kit a pleasure to own, build, and operate. Having been a kitter in the early days of 4sqrp, the indiv

Yes, it is good. TNX Dave for all your help. Pro Jack R. Dock ... How about we give GOD a reason to continue blessing America? In defense of America I pledge my life, my fortune and my sacred honor. W

Well, Bill (WB0LXZ) and I spent the evening checking all of the voltages shown on the schematic and they all checked out. It should work but doesn’t. Bill worked some on it with the scope but I can’t