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Re: Rockmite kit build

 

Daniel,

The RockMite kits (40 meter) from QRPMe

SPECIFICATIONS:

- Double-sided PCB 2.0" x 2.5", plated-thru-holes, solder masked & silk screened for easy assembly
-?SAME size and mounting holes as the original so MINT TIN FRIENDLY
- 0.5W power output at 13V supply
- Supply voltage range 12-15V
- AVAILABLE FREQUENCIES:
80m will be shipped with a PAIR of 3550 & 3560 cyrstals
40m will be shipped with 7030 & 7040
30m will be shipped with 10106 & 10116
20m kits will be shipped with 14050 & 14060 crystals

- Automatic T/R offset, reversible
- Built-in custom version of Ham Gadgets PicoKeyer-RM Iambic keyer, 5-40 WPM
- Built in side tone, approx. 700Hz
- Includes assembly instructions and operating tips
-?ALL on-board parts, input/output connectors and wiring to connect them together are supplied in the Rockmite ][ kit
-?ALL parts for the keyer SPEED, audio VOLUME and power ON/OFF switch & LED mods are also NOW included

TOTAL parts kit PRICE of $50

It has a built in keyer, is a transeiver,? crystal controlled , half watt. The keyer menu is done by button pushes and paddle clicks with cw responses which requires the menu close at hand so you know how to navigate, but with the enclosure you have a speed pot which the thing you want to set most outside the menu. So a lot of features in a small package for a good price.?

The build is relatively straight forward but not a step by step, just read it and if you are getting the power mod (do that first) read all before. There is one resistor that is speed control but you don't put that in and run wires out to the pot on the enclosure, so a few things to watch out for.

So your coming through Chicago?? I live immediately west of Chicago (bordering) in Oak Park. if your going to Rockford you probably will tak the JFK towards Ohare, but the segment just north of the Loop is under some construction and a better route might be to take I290 which goes right through Oak Park.? Let me know and you can stop by and see my meger antenna farm.

? ?---John AC9UV

? ? ? 73

On 03/31/2023 12:22 PM David Knapp via groups.io <renewables@...> wrote:



There is the new 10M version coming out shortly as well, looking forward to it!!!

I know I have several kits not received that will be chasing me across the country as we work our way north to Chicago starting on Sunday. We delayed leaving a couple of days because the TORCON level where we are headed is a 9 today, gulp!!!

My Sea Sprinte will have to get assembled in Rockford, IL when Nani is with the grandbabies and I have slipped back to the RV for a little POTA activation and to make some solder smoke.

What was the bandwidth like at the receiver? I have a 200Hz audio filter I have to build yet, so many kits, so little time. I figure I can't die until I run out of kits to build.

My latest project is in use today, my new Molex connector just came from AMZ:?



I'll check back in a few days Daniel and John!

Davey - KU9L


On Friday, March 31, 2023 at 01:03:12 PM EDT, Daniel KK4MRN via groups.io <sqldan2000@...> wrote:


John,

I like the photos of your RockMite.

Is the QRPme's RockMite ][ CW Transceiver good for someone who has built a Sea Sprite from QRPme?

I am looking into building another radio once I've done all the mods to the Sea Sprite, etc.

My build of the Sea Sprite+ was a success.? And the only mods I have done are the 3rd pin for the crystal and the bypass for the antenna.? ?For the crystal, I simply took a discarded resistor lead and used that for the 3rd pin of the crystal.? No need to cause harm to an innocent crystal... LOL

I am no expert nor beginner, but there have been kits or homebrewing in the past where I failed.? I have 3 kit projects from various places that I have failed and eventually will try fix them.? So, I was happy I built the Sea Sprite radio and it worked.

I think understanding how to diagnose why a radio is not working and how to fix it is an acquired skill set via lots of experience building and fixing kits and homebrewing.? I have not gotten there yet.? Do you suggest a book to read to help fix radio electronics???

73 Daniel KK4MRN

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