NATIONAL NC98, NC98 Receiver, NC98, National Ham Receiver 

Love your videos. Great knowledge you have.

What a fantastic job. Nice save! Great video, thanks for posting it.

Thank you! everyone for your supportive comments ... I wish I could reply to you all individually on my RU-vid videos BUT I do not have time to even look at all the replies on all of my youtube videos 73 keep healthy and keep warm 73 Bob N8RS

Impressed. Wish I had your skills and knowledge. I’m embarking on a Commercial EC-1 restoration. Wish me luck.

Well done! I have a Hallicrafters S-38 that I've had success with...

Thumbs up there Bob.

Never heard “Mickey Mike” before; like it better than “puff”.

Great video, good job. I have a NC-88 I recently recapped and aligned, having issues with low volume and a distinct hum that increase with volume. Any suggestions?

Robert, I found the correct tubes and performed the alignment. It's been a few days, and I just did the BFO injection mod. I had the same good results. I can now leave the Sensitivity control all the way up on CW and SSB and strong AM stations. However, now I have to tune the AM and SW bands in the MVC position. Otherwise, I run right over the weak stations. I've been listening to the CQ WW CW Contest, and except for the selectivity, the CW sounds great! I'll try to get a video shortly of ARRL Code Practice or something similar and post it here, 73 Paul AA1SU

I eliminated the BFO coupling cap and rather than connecting directly to pin 1 of the IF I made a 3 turn gimmick around the wire. It measured 10 Pf, very close to coupling cap and I got higher and cleaner BFO this way.

Robert - I just recapped my National NC-98. Tonight, I tested the tubes, and also found two to be incorrect (like yours). One is an okay substitute, according to the cross-reference charts. The other, I had here. I'm getting ready to do an alignment, so I watched your video for a second time. I'm probably going to do the CW mod with the brown wire. I don't like the way it sounds on CW either. Plus, I have to turn down the sensitivity on strong local MW stations. Do you think the mod will help that, too? Let me know if you make a follow up video. I will probably make one when I'm done. 73 Paul AA1SU

Can I send you my NC-98 to have it all tuned up?

I tried the rewire BFO injection modification. The coupling cap was 3pf. I changed it to 10pf. The BFO performance was indeed much better with the mod. Two not-so-good things: 1: the signal strength meter no longer worked on AVC. 2: Sensitivity was noticeably weaker on non-CW. Did I do something wrong? I put it back to original.