Search found 70 matches

by 479tx
Sun Mar 11, 2018 8:50 pm
Forum: rx and tx mods
Topic: Cobra 29 LX - C43?
Replies: 1
Views: 149

Cobra 29 LX - C43?

I was just working on a Cobra 29 LX mfg. in 2014 that has spot marked for C43 (near L3) but has no part in the spot. C43 is part of the TX side of the hifi mods for the 29. Should I put a part in this spot in this situation or leave it blank like I found it? (This was a factory new radio) Thanks for...
by 479tx
Thu Mar 01, 2018 6:26 pm
Forum: rx and tx mods
Topic: Cobra 29 AMC & Hifi
Replies: 4
Views: 315

Re: Cobra 29 AMC & Hifi

Thanks, Goldfinger!

Do you run the JP36 mod on your wide 29?

I will try the C73 experiment out and let you know what I find.
by 479tx
Thu Mar 01, 2018 1:02 pm
Forum: rx and tx mods
Topic: Cobra 29 AMC & Hifi
Replies: 4
Views: 315

Cobra 29 AMC & Hifi

Goldfinger, I know I've read that you prefer keeping the AMC in tact and setting it so it's still limiting just a little (~105% modulation) rather than completely disabling with the hifi mod. Reason being that the mod transformer has bad response below 100hz and severely clipping/overmodulating with...
by 479tx
Thu Mar 01, 2018 12:56 pm
Forum: rx and tx mods
Topic: Turner +3 widen audio?
Replies: 18
Views: 3390

Re: Turner +3 widen audio?

Awesome info! Thank you for the reply.
by 479tx
Tue Feb 27, 2018 8:53 pm
Forum: rx and tx mods
Topic: Turner +3 widen audio?
Replies: 18
Views: 3390

Re: Turner +3 widen audio?

What effect would making this cap smaller in value, like he suggests (possibly because he couldn't find one closer to the original, or make it fit?) 1x 2.2uF MKC 1862 poly type capacitor (replaces 5uF from volume control wiper to white wire audio output) Would it decrease low bass frequencies? I see...
by 479tx
Tue Feb 27, 2018 8:11 pm
Forum: rx and tx mods
Topic: Turner +3 widen audio?
Replies: 18
Views: 3390

Re: Turner +3 widen audio?

That makes sense. I happened to stumble across this thread on worldwidedx.com, this guy talks about replacing the caps in a Turner +3 with high end audiophile type caps to make the mic sound better than stock (so he says) --- Rebuilding the microphone to sound better than new only requires a few sel...
by 479tx
Mon Feb 26, 2018 7:15 pm
Forum: rx and tx mods
Topic: Turner +3 widen audio?
Replies: 18
Views: 3390

Re: Turner +3 widen audio?

What does the resistor change here do specifically? I tried this set of mods on a Turner +3 before and liked the change in tone.

Thinking about doing it on another +3 mic for a friend.

Thanks
by 479tx
Mon Feb 26, 2018 6:52 pm
Forum: rx and tx mods
Topic: Sonar FS-2340
Replies: 8
Views: 380

Re: Sonar FS-2340

Installed a 1/4" phono jack & did the wiring.

Just need to do the cap changes now.

Can I run the output of my rack gear straight into this without any kind of isolation?
by 479tx
Fri Feb 23, 2018 9:37 pm
Forum: rx and tx mods
Topic: turner m+3 mic
Replies: 3
Views: 208

Re: turner m+3 mic

http://www.cbtricks.com/mic_manuals/tur ... m-plus.pdf
Docs say the mic goes down to 300hz stock. I found a nice one so I'm going to check it out on a cap modded 29.
by 479tx
Fri Feb 23, 2018 9:25 pm
Forum: rx and tx mods
Topic: Sonar FS-2340
Replies: 8
Views: 380

Re: Sonar FS-2340

Easy enough! Thanks a lot, Goldfinger. I'm going to give it a try this weekend assuming on-call with work is quiet.

Will let you know how I make out.
by 479tx
Thu Feb 22, 2018 11:59 pm
Forum: rx and tx mods
Topic: turner m+3 mic
Replies: 3
Views: 208

turner m+3 mic

GF -

How'd you modify your M+3 for wider audio?

Thanks! :D
by 479tx
Tue Feb 13, 2018 8:51 am
Forum: rx and tx mods
Topic: Sonar FS-2340
Replies: 8
Views: 380

Re: Sonar FS-2340

Thanks GF!

I just came into possession of a like-new FS-2340. Clipper board isn't even bypassed yet.

479tx
by 479tx
Mon Feb 12, 2018 8:20 pm
Forum: rx and tx mods
Topic: Sonar FS-2340
Replies: 8
Views: 380

Re: Sonar FS-2340

by 479tx
Mon Feb 12, 2018 5:52 pm
Forum: rx and tx mods
Topic: Sonar FS-2340
Replies: 8
Views: 380

Sonar FS-2340

GF,

Ever widened up a Sonar FS-2340?

Was thinking fatten up the caps inside and put rack gear into the mic jack? What do you think?
by 479tx
Mon Feb 12, 2018 2:25 pm
Forum: rx and tx mods
Topic: Galaxy 900 series radios 919 through 979
Replies: 8
Views: 3644

Re: Galaxy 900 series radios 919 through 979

Thanks for the reply, 31.

I see a cap listed to decrease in value or remove for receive highs... but not for additional highs on TX?
by 479tx
Sat Feb 10, 2018 4:34 pm
Forum: rx and tx mods
Topic: Galaxy 900 series radios 919 through 979
Replies: 8
Views: 3644

Re: Galaxy 900 series radios 919 through 979

This mod lists to caps for adding bass to the TX, but what about more highs?

Radio in question is a Galaxy 2547, but assume these instructions will be the same.

Thanks!
by 479tx
Tue Aug 23, 2016 2:48 pm
Forum: >>> HIGH FIDELITY AUDIO Q and A <<< POST QUESTIONS AND COMMENTS HERE!
Topic: Back swing issue
Replies: 27
Views: 2643

Re: Back swing issue

The Echomax 2000 ended up having enough gain when direct injected just before the audio chip on my Grant, it just didn't sound so great. I wonder now if the guy in DX land that told me that was the mic he was running was kidding now ... Either way, I have tried both rack gear and digital audio from ...
by 479tx
Sun Aug 14, 2016 8:41 pm
Forum: rx and tx mods
Topic: direct injection on a Cobra 29 LX
Replies: 25
Views: 4904

Re: direct injection on a Cobra 29 LX

GoldFinger is the man, that is for sure. Post a gate of the direct injected 29 audio if you get a chance weak station, I'd love to hear it.
by 479tx
Thu Aug 11, 2016 11:51 am
Forum: >>> HIGH FIDELITY AUDIO Q and A <<< POST QUESTIONS AND COMMENTS HERE!
Topic: Back swing issue
Replies: 27
Views: 2643

Re: Back swing issue

GF, Am I thinking about this right? I want to DI my Grant just before the audio chip and drive it with my Echomax 2000 via the standard microphone plug on the side. Would the following work? - Remove mic audio wire from stock mic jack on radio and replace it with a wire leading to a 10uf a 10UF cap ...
by 479tx
Thu Aug 11, 2016 12:18 am
Forum: >>> HIGH FIDELITY AUDIO Q and A <<< POST QUESTIONS AND COMMENTS HERE!
Topic: Back swing issue
Replies: 27
Views: 2643

Re: Back swing issue

RPM sounds pretty good in that gate! I talked to a guy in DX land the other day that sounded really good and even with just a widened Cobra 29 receiver could tell he was running wider than stock. Turns out he was running a Galaxy radio, direct injected with an Echomax 2000. It wasn't super bassy but...
by 479tx
Wed Jul 27, 2016 8:16 pm
Forum: rx and tx mods
Topic: How to make non-polarized caps
Replies: 2
Views: 3613

Re: How to make non-polarized caps

Great info, GF!

Thanks
by 479tx
Fri Apr 08, 2016 2:55 pm
Forum: rx and tx mods
Topic: c204 on older Cobra 29?
Replies: 1
Views: 1521

c204 on older Cobra 29?

I'm working on a China made side-mic Cobra 29 LTD Classic that was mfg. in 1995.

I can't seem to find c204 to remove for more highs on receive. I know some years don't have it but can anyone point me to the right place to look for it just to make sure?

Thanks!
by 479tx
Wed Dec 09, 2015 1:48 pm
Forum: rx and tx mods
Topic: Location of C170 on newer model 29
Replies: 5
Views: 2466

Mine is similar but dang if that cap (or a marked place for it) doesn't exist.

There's a small surface mount part in that general area on the under side of the board but it looks like a resistor.

I'll see if I can get my bearings with the traces and that diagram and see if that could be it...
by 479tx
Sat Nov 14, 2015 9:59 pm
Forum: rx and tx mods
Topic: Location of C170 on newer model 29
Replies: 5
Views: 2466

Thanks for the layout pic Goldfinger! My Made in China Mfgr'd in Feb 2014 Cobra 29 LTD classic does not appear to have this cap. It also appears that my board layout is different. The parts in the general area are in slightly different places on my radio. I see R105, R104, d22, c119, etc. Serial end...
by 479tx
Thu Nov 12, 2015 12:46 pm
Forum: rx and tx mods
Topic: Location of C170 on newer model 29
Replies: 5
Views: 2466

Location of C170 on newer model 29

In the stickied post about Cobra 29 cap changes, there is a link to an image that shows the Location of C170 on newer model 29. Unfortunately that image/link is gone now. Can anyone give me some direction on finding c170 in the new style 29 with the new audio chip? I've combed the thing, surely I'm ...
by 479tx
Sat Jun 21, 2014 6:51 pm
Forum: rx and tx mods
Topic: rci 2970n2
Replies: 10
Views: 2349

To those that are curious, You can (if you are careful, and have a steady hand) solder light weight poly or tant caps across the existing caps you're supposed to change (shorten the leads, and bend them like a U shape) with good results! I didn't feel comfortable removing the existing SMT components...
by 479tx
Sat Jun 21, 2014 6:49 pm
Forum: rx and tx mods
Topic: turner expander 500 mods?
Replies: 3
Views: 1776

Thanks Goldfinger,

Going to get this mic back out and give it a shot!
by 479tx
Sat Jun 21, 2014 6:46 pm
Forum: rx and tx mods
Topic: RX cap mods for Galaxy Saturn Turbo?
Replies: 1
Views: 1433

Found it

The mods Goldfinger posted for the 2527 are the same for the Galaxy Saturn Turbo

http://www.wwpdx.com/ForumWWPDX/viewtop ... light=2527

Great info, Goldfinger!
by 479tx
Sun Jun 15, 2014 6:01 pm
Forum: rx and tx mods
Topic: RX cap mods for Galaxy Saturn Turbo?
Replies: 1
Views: 1433

RX cap mods for Galaxy Saturn Turbo?

I searched around but didn't find anything for this exact radio (Did find the direct inject mod, which I intend to try out!) to widen the RX.

My Galaxy Saturn Turbo is essentially the same thing as a RCI 2990.

Thanks!
by 479tx
Sun Jun 15, 2014 5:53 pm
Forum: rx and tx mods
Topic: Turner +3 widen audio?
Replies: 18
Views: 3390

I liked the results of this on my Turner +3

Thanks Goldfinger

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