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December 2012, 17:45 PM Hello every one. Im brand new to this forum. I use others a lot but have noticed some interesting threads from Google. I've been working on a radio as an on going project and its coming out pretty well. It's a cobra 29lx that I installed the rfx75 and done several...

Sorry I didn't make that clear. It's just a 2 pill made of scraps Thai came out pretty nice. If I take any amp and add the rc feedback will it guarantee improvement? Or is it case by case? I know manufactured amps don't build for max potential, and I don't even want to push max watts at all...

Good morning every one. I just found this section of the forum so I'm stoked that I have new toilet material. I finished my 2x 2879 build and it works.. but I'm not sure if it's tuned properly as I'm learning still. I used pills I yanked out of an old amp I had laying around. I based out off the...

I'm trying to understand what all this mod does. With the TIP transistor. how come You remove the modulation trim pot vr4 (cobra 29 btw) and after afinal swap and variable power mod does it Typically through of the radios meter? My dead key on the radio is showing 2watts (into amp) any one know...

I changed the diode with a germanium diode with really low leakage. I don't have the right equip to see if it did any thing but it felt good lol

... I don't understand why people feel that way.. I already have a setup like that. I wanted to to try this

On my 29lx I still have a low dead key. I've added lots off capacitance on top of the 68of (I think that's the value).. like 220of added all ready.. and I . Also have a really low resistor value on the swing mod portion of the installation. Every thing works great, it's reading 70 watts peak on...

Common, y'all help me with everything.. some body knows. If i use the heat sink as aground i need to tie it in to dc ground some where ?

The amp I'm building with the erf7530 s uses a solid copper board as the common ground. Right but it's feed backing like crazy so I'm going back through the circuit and doing soon tweaking. I read somewhere that i can use the heat sink for the rf ground and tie the source pins to it to help...

You did do the swing mod that was in the directions didn't you? If so increase the resistor. Also try removing that 82 pf cap you installed by the driver.

Does anyone know where in the hell i can find these in the library? I can't find any thing even close... beyond frustrated, and not sure what to do. Surely some one has done this in pcb format.

Type 61 1/2" cores 1 " length for output type 61 1/2" cores .50" for input

Ok so I'm assuming it would be ok for the length to be slightly longer? As long as it's not shorter? I believe the 2 cores are a tad longer than the single longer one. Yes i am talking about the out put. So i should use these cores and use the amount of turns as on the schematic? Thanks

I'm about to dive into a project building a 4 x erf7530 amp. I'm kind working off the palomar fet 450 schematic.i have most of the parts in the mail, but the only thing i had to sub was the larger ferrite transformer. I couldn't find the larger 1 single beads. So i got the one with 2 beads back...

If i were to purchase a bulk quantity of air core (or better recommended material) for using with multiple projects and forming all different sizes and shape inductors for several different projects, what size should i go with.? If there's a more suitable material i would love to know. Most...

I'm starting this thread in hopes some one knowledgeable will chime in and 1. Help me and 2. Put the info out there because i can't find much. When designing LPF's for cb frequencies how would i go about figuring out what size wires(cores) to use and how many turns and how widely spread...