Finally decided built the courage and attempt to flow solder the freescale device to Jim W6PQLs copper spreader. 73 and good dxing Richard G6HKSġ1th January 2014. So now we move onto the fun part (and the scary part of flow soldering the device onto the copper spreader), keep checking for the next update. You can choose to mount them inside the unit with just the screen in view but I prefer the external mount which also provides a bit more room inside and removes the need to cleanly cut the window panel. The meters are relatively expensive units from RS components (£23 each all in) but really make the unit look the part. Show how I made the required shapes using basic tools which i hope are useful. The paint is excellent with no chipping of any kind and i will certainly use this case for future units. The RS enclosure used incorporates very workable aluminium front and rear panels with a stainless steel wraparound. To be honest I like to get this part out of the way and move onto the fun part that is the pcb assemblies. However, I managed to sneak away during the festive break and the following pics show completion of the rear and front panels. Getting time for this project has been tough in between fulfilling all your orders. The scary bit being flow soldering the device onto the copper spreader, more updates to follow.ģrd January 2014. Over the next few weeks i intend to complete the chassis bashing and complete the RF stage. The LNA will be fed from my 4 x 18eles which are ready to go and will be powered/sequenced from the LDMOS amplifier of which 60% of the metalwork now completed. I also got a chance to make up a section of the conformable Huber and Suhner coax and flow solder onto the N Type females good for about 2 kw at 432 but alas they wouldnt quite fit the enclosure. Pic shows inside less final cabling and fuse otherwise its completed – the hot end uses RG400 good for 800w at 432MHz. I got a little distracted from the amplifier and completed my HA8ET masthead LNA for 432. Its still very much the metalworking stages and you will see I have now added a chassis plate within the RS enclosure and will now be working out the optimal location for other parts, keep tuned for further updates. grrr) so I can now proceed with construction. At last my case arrived from RS components (out of stock for 3 months. The project starts here with lots of parts. But read on down for the whole story.Īutumn 2013. New image of the LDMOS Homebrew Project including the letraset modified pallet view showing cleaner output coupling another view showing front panel and added shielding to the panel bargraphs.

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