Recent content by MKwrench

In another post I found the 5555n2 service menu, It was a great help having something to reference. Using that other post, knowing that each S unit is 6 Db away from the next and that S9 should be -73 Db. Chanels 40 to 45 are the AM and FM settings and 46 to 51 are for SSB. I used unmodulated FM...

Cool highway cruise song. I remember UFO would play super loud and clean on anything. I might have pirate shared this one before, If so.... Here it is again:LOL:

Personal mini repeater at one of the tops of the valley? ... Keeping consistant power to it, and the amplifier would be the tough part. Plus it's possibly on someone elses property, so...... I always wondered if a "passive repeater" or some type of reflector could help in these situations...

We all need more Motorhead:

This gave me an idea of who the last owner was. It was covered with duct tape. Did he use a fireplace poker for the conversion? All that's needed is grounding the top pad. I removed all the "whatever that was" and had to ground the pad at the beginning of it's trace, because the pads were gone...

Thats for the V1 models with internal adjustments. There is still good info in there though.

Well I was correct about the bias being fiddled with. The predriver had a constant 8ma, TX/RX (should be 100ma, TX). The driver had 900+ma, TX (should be 50ma, TX). The finals, RX is 10ma and TX was over 2A TX. (should be RX+20ma for 30ma). I know I'll eventualy replace the other 3 520s, just...

Iv'e been trying to patch up a new to me 955. The 1st things I noticed were the Frequencies being out 1khz in all modes and bands, it displayed correctly but would need clairified to transmit properly. I was able to figure out and use the "BFO" and 'VFO" settings to fix that. Then noticed the...

I understand the rules and wish to enter into the drawing.

I meant replace R130 with the Diode/Pot combo on the silkscreen, in my above post. We leave R131 alone for a good working limiter.

I did this to one of my old Grants. It works great! I had to adjust the 1uf up a bit and added a pot and diode where R131 would be, I just followed the silk screen and ended up with a great working limiter. I noticed .that more uf = more sensitivity for swing.

A few things I've picked up were to beef up a few of the caps for the regulator and audio chip. For C172 I'll use a 2200 or 3300uf and C181 gets a 1000uf. These help keep the whole radios voltage steady. If you leave C232 empty it will eliminate the muting between channels while the channel...

I helped a friend repair the same issue on his Craftsman a while back. You're totaly right, the original stuff is way too cheezy for what it has to do. My old 1990s Ford LS25 still works, but has major slop and is getting hard on my poor elbows especialy with all of the bushings that make it...

I tried to add more above, 20 is the limit

I'll dig up some pictures. I need more pics :unsure: