And you gunna properly align all that ? ![Scared :scared:](https://www.eevblog.com/forum/Smileys/default/scared.gif.pagespeed.ce.oZptHNcbsD.gif)
Yeah. It's not particularly difficult - don't need any test gear believe it or not as its got a voltmeter, RF power meter and frequency counter built in! I am slightly disappointed in this but will use test gear anyway because it's optional and this is TEA after all. Steps are:
1. Align master reference oscillator with external counter (optional and was bang on anyway - factory aligned and calibrated)
2. Plug internal counter probe into master PLL reference oscillator and run software controlled linearisation process to get rid of varactor non-linearities.
3. Plug internal counter probe into BFO circuit. Adjust BFO using reference table in manual and calibration values on crystal packet
4. Peak IF strip using noise generated within the preamp or external (I used a long wire antenna). This is all software, calibration value and table driven.
5. Peak all the BPFs in set order using a signal generator or external noise (I used DG1022Z and some cascaded 20dB inline attenuators for all bands other than 10m which was done on TF2015) and ears or voltmeter (I used HP 400E)
6. Plug dummy load in and peak all transmit trimcaps (it has built in power monitor for this)
7. Calibrate overcurrent protection (built in voltmeter and ammeter!)
8. Calibrate S-meter using signal generator and attenuators (optional but will be doing this)
8. Job done.
Apparently after the SSB board is done its best to connect a wideband noise source to the antenna port and then use a PC soundcard and FFT to align the SSB filters which I will do later. I haven't built that yet.
All in all a very very well thought out process.
I've got up to step 5 which there is a "stop for inspection" section and my eyes were not working.
Excellent work bd! So many parts, but all nicely placed, properly oriented, standing straight (on the top side at least), etc. ![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif.pagespeed.ce._JElyJQqdB.gif)
The bottom kills my OCD. You have to bend a lot of the caps over as there's only 6mm clearance between that and the bottom of the case. It does however warn you of this and there's a check step to make sure nothing is wrong.
I have to say, that is a fine piece of work so far. I'm guessing you've done this before. ![Grin ;D](https://www.eevblog.com/forum/Smileys/default/xgrin.gif.pagespeed.ic.QVVz6XIT20.png)
Maybe
![Wink ;)](https://www.eevblog.com/forum/Smileys/default/xwink.gif.pagespeed.ic.cldandycH0.png)
This outlines I need a decent signal generator like a 2019A or HP box though.