Search results

At a watt or less input drive the 1446 looks to have more gain then a 455 or a 454

Been running it through it’s paces. Few things I’ve noticed, compared to an MRF455 the 454 needs more drive. Gonna try a 2290 or 1446.

I dislike the way they did it but not the idea. Anyhow they replaced R21 1.2k with a 1k Pot and 500 or so ohm to ground labeled it RF Power. I’d rather they did the R174 mod and 10k pot there.

Pull the resistor , let the cartridge see a high impedance load from the gate of the FET. The cartridges tone will sound closer to its normal state.

The 520e seemed really close . This guy came up with a cool circuit. Glad you got it figured out http://raymerrick.freeservers.com/cgi-bin/i/RifeMods/520e_main_print.gif http://raymerrick.freeservers.com/RifeMods/My%20Rife%20Machine.htm

Welcome , I like the receive after swapping caps. So easily done and makes listening more enjoyable. Glad it worked for you

We are in the modifications section of the forum. Sheesh

If you know of a good shop to do your radio, you could do the adjustable deadkey mod like the cobra 29 JP36 variable dead key mod. I don’t have an 18 in front of me so if there ain’t a Jumper available, they need to cut a trace and install the mod there

the problem is the lack of schematics to call out part numbers to change. So you'll have to do a side by side comparison against a 29 for the part numbers. Match the 29 location to your 76 and swap. From GF forum: Cobra 29LX with the TDA2003 audio chip Receive: Change C33 and C40 to 2.2uF...

Not much schematic info online, some of the Lafayette rigs were Cybernet chassis. A Telstat Base I worked on once has that funky VCO sealed circuit . No matter how much I adjusted it , receive and TX was low. Long story short, electrolytic cap sealed in epoxy in the VCO block likely culprit. Not...

https://web.archive.org/web/20150221032424/http://www.cbtricks.com/radios/cobra/2010gtl_wx/graphics/cobra_2010gtl_wx_sm_main_sch.pdf

Go the 1895 route and size down rather then stretch out. I like mine with room left in the tubing for strength and shape

Is the 2830 still for sale?

I’ll take the 2830

Sue from Lbcomms. Razor Radio . Both are in your neck of the woods

Received the PCBs from board place , looks like I need to adjust a few things , guess that’s why the first order is never the final order lol. Board is too long to clear the lid but the MRF heatsink fits like a glove . Making the fingers a little wider also.

I got a few 2510’s with bad finals and I’m using my Lincoln for reference. A few of the amp builders are repairing HG amps , sounds like something they’d make a video of the insides of one

I sent the order in, board house normally takes 3 weeks round trip