Search found 684 matches

by Goldfinger
Fri Oct 16, 2020 8:00 pm
Forum: rx and tx mods
Topic: Request. President Lincoln II plus
Replies: 10
Views: 1361

Re: Request. President Lincoln II plus

Thanks
Nope, I don't do any social media.
by Goldfinger
Mon Oct 12, 2020 10:41 am
Forum: rx and tx mods
Topic: Request. President Lincoln II plus
Replies: 10
Views: 1361

Re: Request. President Lincoln II plus

OK, receive cap changes added above.
by Goldfinger
Sat Oct 10, 2020 12:46 pm
Forum: rx and tx mods
Topic: Request. President Lincoln II plus
Replies: 10
Views: 1361

Re: Request. President Lincoln II plus

I've had a lot going on, I'll get the receive mods up as soon as I can.
by Goldfinger
Tue Oct 06, 2020 8:52 am
Forum: rx and tx mods
Topic: Request. President Lincoln II plus
Replies: 10
Views: 1361

Re: Request. President Lincoln II plus

Yes they are. I'm too old to mod SMD radios but I still provide info to anyone that asks. A few gentlemen here have went the extra mile and did the micro work and hi-fi'd their radios. I applaud them.. :mrgreen:
Good luck!
by Goldfinger
Mon Oct 05, 2020 4:41 pm
Forum: rx and tx mods
Topic: Request. President Lincoln II plus
Replies: 10
Views: 1361

Re: Request. President Lincoln II plus

Found the TX caps, the RX is a little more complicated as it's on several areas of the multiple page schematic: TX: : Mic amp: Change C571, C570, C530, C527 to 2.2uF non-polar AM regulator/modulator: Change C153, C152 to 2.2uF non-polar. Change E14 to a 330uF 25 volt electrolytic, observe polarity D...
by Goldfinger
Sun Oct 04, 2020 5:56 pm
Forum: rx and tx mods
Topic: 2970n2 injection spot
Replies: 2
Views: 670

Re: 2970n2 injection spot

I think that radio has the ept695015a board. That would make it the same as a 2995DX.
You would inject through a 4.7uF to 10uF cap at the R290/R291 end of C262
direct 2970n2.jpg
direct 2970n2.jpg (75.19 KiB) Viewed 668 times
by Goldfinger
Fri Oct 02, 2020 9:32 am
Forum: rx and tx mods
Topic: Request. President Lincoln II plus
Replies: 10
Views: 1361

Re: Request. President Lincoln II plus

I'm going to assume that this schematic is the right one:
https://simonthewizard.com/2014/08/26/p ... chematics/

I'll stare at it and get back to you.. :mrgreen:
by Goldfinger
Sat Sep 26, 2020 11:07 am
Forum: rx and tx mods
Topic: Vfo wind up
Replies: 35
Views: 14246

Re: Vfo wind up

Yes, I think it's VR5 on either the Grant or Grant XL with the 8719 PLL.
by Goldfinger
Thu Aug 27, 2020 8:15 am
Forum: rx and tx mods
Topic: Vfo wind up
Replies: 35
Views: 14246

Re: Vfo wind up

Once again the clairifier has to be stock but you connect the + to the center swiper of VR3 and the - to ground.
This mod also works on Cobra 140/142.
by Goldfinger
Sat Aug 01, 2020 9:20 am
Forum: >>> HIGH FIDELITY AUDIO Q and A <<< POST QUESTIONS AND COMMENTS HERE!
Topic: 29 ltd classic philly made hi-fi help
Replies: 15
Views: 2993

Re: 29 ltd classic philly made hi-fi help

I direct injection a cobra 29 classic is can't get the squeal out of the receive when I key what can I do to get the squeal out The problem with injecting a 29 at C37 is that the same audio output stage is used for both the receive and transmit. When you inject at C37, you need to find a way to mut...
by Goldfinger
Thu Jul 23, 2020 5:13 pm
Forum: rx and tx mods
Topic: Texas Ranger TR-127GK, TR-127DX
Replies: 0
Views: 1632

Texas Ranger TR-127GK, TR-127DX

Receive: Change C21 and C39 to 2.2uF non-polarized electrolytic or mylar Change C51 to a 1000uF, 25 volt electrolytic, observe polarity Transmit: Change C74 to a 1.5uF, 16 volt Tantalum or electrolytic with the + towards TR 19 Change C40 to a .1uF (104) mylar This radio is a lot like a 29. As such ...
by Goldfinger
Fri Jun 05, 2020 4:07 pm
Forum: rx and tx mods
Topic: ftdx-1200
Replies: 7
Views: 1285

Re: ftdx-1200

I've been studying the schematic. It looks like the last IF gets converted to 30khz then goes out of the main board into the DSP board. Following the signal on the DSP board it goes straight to the ADC/DAC chip through some DC coupled amplifier stages and gets converted into the digital realm. It ap...
by Goldfinger
Sun May 24, 2020 7:37 am
Forum: rx and tx mods
Topic: ftdx-1200
Replies: 7
Views: 1285

Re: ftdx-1200

As you know the schematic is pretty complex and is one of those stupid ones that integrates several circuit paths in to one fat line. Finding the other end of any one certain path takes time. I've isolated several transmit caps but only a couple at the end of the receive chain. I'll stare at it a li...
by Goldfinger
Sat May 16, 2020 4:40 pm
Forum: rx and tx mods
Topic: ftdx-1200
Replies: 7
Views: 1285

Re: ftdx-1200

There doesn't seem to be a schematic for it online so doing hi-fi mods would be difficult. I do see a "REC" jack on the back panel that states it's a line level receive output. Maybe it would sound better?
by Goldfinger
Sat May 02, 2020 4:31 pm
Forum: rx and tx mods
Topic: Goldfinger galaxy ssb
Replies: 1
Views: 973

Re: Goldfinger galaxy ssb

I'm pretty sure the SSB base is the same as the 88HL
by Goldfinger
Thu Apr 30, 2020 8:13 am
Forum: rx and tx mods
Topic: Hifi tx rx inject also for 2980 and galaxy ssb
Replies: 7
Views: 1526

Re: Hifi tx rx inject also for 2980 and galaxy ssb

Yeah, the ept360014b is the same as the 88HL.
If you want wide audio through the mic jack you will need to bypass the echo board.
by Goldfinger
Fri Apr 03, 2020 1:44 pm
Forum: rx and tx mods
Topic: Hifi tx rx inject also for 2980 and galaxy ssb
Replies: 7
Views: 1526

Re: Hifi tx rx inject also for 2980 and galaxy ssb

There isn't a schematic for a 2980 but if it's the same as a 2980DX, the hi-fi mod is the same as the Galaxy 959.
http://www.wwpdx.com/ForumWWPDX/viewtop ... 32&t=12330

I'll look up the old SSB base soon and post it up.
by Goldfinger
Sun Mar 15, 2020 9:24 pm
Forum: rx and tx mods
Topic: Galaxy DX2517, TR-6900 HiFi
Replies: 12
Views: 2190

Re: Galaxy DX2517, TR-6900 HiFi

by Goldfinger
Sun Mar 15, 2020 6:59 pm
Forum: rx and tx mods
Topic: 148F GTL, TR296GK/DX, EPT014811z Hi-Fi
Replies: 2
Views: 2106

148F GTL, TR296GK/DX, EPT014811z Hi-Fi

Receive: Change C71, C76, C187 and C183 to 4.7uF mylar, polypropylene or non polarized electrolytic More highs? Change C182 to a 103 (.01uF) Transmit (whole audio chain): Change C108 and C104 to 10uF 16 volt tantalum or electrolytic, observe polarity Change C101 and C99 to 4.7uF 16 volt tantalum or...
by Goldfinger
Sun Mar 15, 2020 6:36 pm
Forum: rx and tx mods
Topic: Galaxy DX2517, TR-6900 HiFi
Replies: 12
Views: 2190

Re: Cobra 148f, Galaxy DX2517. TR-296, TR-6900 HiFi

It looks different. Looks like the 148F GTL with the EPT014811z board is the same as the TR296GK and TR296DX. Luckily CBTricks has the schematic. I'll revise this thread and make a new one.
by Goldfinger
Sun Mar 15, 2020 4:47 pm
Forum: rx and tx mods
Topic: Galaxy DX2517, TR-6900 HiFi
Replies: 12
Views: 2190

Re: Galaxy DX2517, TR-6900 HiFi

EPT690010Z :Galaxy DX2517, Ranger RG66, RG99, Cobra 148F GTL DX+, Texas Ranger, TR6900, TR6900 Jumbo, TR6900F and others) Receive: Change C78, C40, C185 to 4.7uF mylar, polypropylene or non-polarized electrolytic. More highs? Change C39 to a 103 (.01uF) On the DX2517 the "Narrow filter" EP...
by Goldfinger
Mon Mar 09, 2020 12:06 pm
Forum: rx and tx mods
Topic: Galaxy 66 v direct injection hifi rx tx
Replies: 3
Views: 999

Re: Galaxy 66 v direct injection hifi rx tx

Yes, Googling ept360014b shows they are all about the same.
by Goldfinger
Fri Mar 06, 2020 1:27 pm
Forum: rx and tx mods
Topic: Uniden PC-122, PC-122XL
Replies: 7
Views: 4308

Re: Uniden PC-122, PC-122XL

I'm sorry Robb, I never got back to this thread to post the info.

146GTL hi-fi
by Goldfinger
Fri Mar 06, 2020 1:24 pm
Forum: rx and tx mods
Topic: Cobra 146GTL, Uniden PC-244 hi-fi mods
Replies: 0
Views: 2036

Cobra 146GTL, Uniden PC-244 hi-fi mods

Receive : Change C25 and C29 to 2.2uF mylar, polypropylene or non-polarized electrolytic Change C142 to a 2.2uF, 16 volt electrolytic. Observe polarity Change C138 and C139 to 2.2uF mylar, polypropylene or non-polarized electrolytic Transmit : Change C129, C118 and C112 to 2.2uF mylar, polypropylen...
by Goldfinger
Sun Feb 23, 2020 9:31 am
Forum: rx and tx mods
Topic: Wide banding a 98 vhp
Replies: 1
Views: 999

Re: Wide banding a 98 vhp

by Goldfinger
Sat Feb 22, 2020 5:06 pm
Forum: rx and tx mods
Topic: Vfo wind up
Replies: 35
Views: 14246

Re: Vfo wind up

Yeah, it basically can only be heard on AM when you are keying/heterodyning with other signals. It's hard to hear on a radio in close proximity. If you hear it on SSB though, that means it's working.
by Goldfinger
Wed Feb 05, 2020 11:01 am
Forum: rx and tx mods
Topic: President Dwight D cap changes?
Replies: 8
Views: 3084

Re: President Dwight D cap changes?

As all of the 858 chassis are old, it's a good idea to replace all of the larger electrolytics in the power supply and on the main board. I always replace any that are 220uF or larger. Another cap that should always be changed on the 858 chassis is C179, a 2.2uF Tantalum. Replace it with a 1uF-50 vo...
by Goldfinger
Mon Feb 03, 2020 3:28 pm
Forum: rx and tx mods
Topic: President Dwight D cap changes?
Replies: 8
Views: 3084

Re: President Dwight D cap changes?

First is the boards the same from the madison and Dwight D with 858pll my board in my madison is a pc346aa board if it is then can you tell me a good final mod and how to fatten and widen up the rx and tx and the upgrades with the capacitors and resistors for power and strong modulation for AM ONLY...

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