Re: where is firmware for Hilltopper40

Charles W. Powell


The Hilltopper firmware is all pretty straight forward.  I made some simple modifications to mine and it works FB.  Sidetone frequency/offset, and tuning time are the things I changed. 5 seconds of tuning isn’t enough for my T1 tuner but 10 seconds is more than enough.

A couple of build tips: 

  • Put R5, that falls right next to the pushbutton switch, on the bottom of the board.  It keeps it completely out of the way of the switch.  
  • Watch out for the duplicate instruction on page 11 that tells you to install C54.  I was installed in a previous step.
  • Be careful installing C6.  The instructions say Install C6 - 10 (which I mistook for C6-C10.  Fortunately it was easy to fix.)
  • When assembling the case, use either a very hot iron at 850F with a chisel tip or an old style soldering gun.  And watch your fingers. It’s easy to get burned.
  • Personal preference: I put the sockets in but leave the IC installation for last.  Superstitious, I suppose.
  • Forgive me if you have done a lot of kit building, but if not, get a pair of flush cutters to nip the leads as close as possible.  You’ll not only appreciate from a neatness standpoint, but also if you make a mistake and you need to remove a part.
  • Finally for those of you like me who wander off task sometimes, this little item is worth its weight in gold:  With this little gem I was able to remove some tiny caps and move them without even damaging one.  This is far superior to any others I have used.


Chas - NK8O

On Dec 17, 2018, at 12:23 PM, Charlie Crapotta, NA2CC <pccmd@...> wrote:

TU 73
Happy Holidays 😃

On Dec 17, 2018, at 9:16 AM, Jim Pruitt <jpruitt67@...> wrote:

Hello Charlie.

You have the latest version of the firmware.  If you bought one of the first 100 kits (sold out in June as I recall) then you might have the older version but all of the kits I have shipped (since about September 1) have the new firmware version which matches the one posted to the files section of the Hilltopperkit group.

Thank you.

Jim Pruitt

On 12/17/2018 5:48 AM, Charlie Crapotta, NA2CC wrote:
Thanks, seems I am now a member of HT subgroup.  
BTW, how do I find out what firmware version I shipped to me on 11/24 

On Dec 16, 2018, at 11:04 PM, Jim Pruitt <jpruitt67@...> wrote:

The easiest way is to send a message to this address:

or go to and search for groups (Find or create a group).  The name is Hilltopperkit

There are actually several sub groups under the main 4SQRP group.  Right now they are:

For some reason not many people post to the sub group even though the subgroups were created to discuss a particular kit.  I assume each new kit will get a group created for it.  To subscribe to them the format is the same:
GroupName+subscribe at

Good luck.

Jim Pruitt

On 12/16/2018 10:25 PM, Charlie Crapotta, NA2CC wrote:
Ok, so how do I find the HT subgroup?

Join to automatically receive all group messages.