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Correction: It is the MRF 455 Finals I have Marty KL7AM To: "DRAKE-RADIO" <[email protected]> Sent: Saturday, March 11, 2023 8:29:10 AM Subject: Re: [DRAKE-RADIO] Drake TR5 schematic I have new

I have new matched pairs of driver transistors for the TR-5 Contact me off list if interested Marty KL7AM To: "DRAKE-RADIO" <[email protected]> Sent: Thursday, March 9, 2023 3:21:45 PM Subject:

Nice catch. Those 1/4 Watt carbon comp resistors that Drake used seen prone to that. 73 -Jim NU0C "Dave Cutts via groups.io" <g4faw@...> wrote:

Yep, mine is a later one with split rear panel and green solder screen on the boards.. The component position of the Mic input resistors is slightly different. Anyway, found a cracked resistor (150k)

Yes, there was to the Predriver board. The Transmit Exciter is a completely different board. Both Predriver version are covered in the service manual. 73 -Jim NU0C "Rob Sherwood" <rob@...> wrote:

Well, no. That is the Predriver board, which did have a major change. The Transmit Exciter board is where the mic amp, PTT/VOX, and balanced modulator live. 73 -Jim NU0C "Doug Crompton WA3DSP"

t took about 5–7 days as I remember. I usually always specify the cheapest shipping method unless I am in a hurry. In this case, it was first class mail. I am near Philadelphia. Doug, WA3DSP

I think your answer can be found here - http://www.wb4hfn.com/DRAKE/DrakeArticles/TR7_Comparison_Article/TR7_Idenity-04.htm Doug, WA3DSP

Decades ago on a mobile trip from CO to ME my TR-7 quit transmitting. I was in Ohio so Drake replaced the driver board. I think there was a significant upgrade to the replacement board. Rob, NC0B

I suspect the difference is largely cosmetic. Drake started using boards with solder mask in later years. These will have a green coloring while earlier boards are bare tinned copper. A surf of eBay

Doug, How long did it take for you to receive the kit after placing the order? wrote:

Thanks Rob,any idea where I can get details of it? my manual only shows one version, Its very similar... Thanks Dave G4FAW

I'll second Doug's experience. I used the same kit on a rebuild I did about 6 months ago. Modification / modernization came out fine as did Doug's. Instructions were clear. 73/jeff/ac0c

Thank you Ken and it looks better. Still have to fix my TR& as it does not transmit either hi. 73, Jim

Mc Master Carr is also an excellent source of cord grips.? Lots of choices Paul K0UYA

Gregg, Look through these messages and you will see the Mouser part, but also check out the other cheaper part mentioned further down. I ordered the Mouser part before I saw the later message. The

Jim, Is the attached better than yours? *Ken* *WA2LBI*

Does anybody have a good clean clear copy of the schematic for the TR5? Or maybe a place I can download one. I have one but when you blow it up the resolution is terrible as lines are missing etc. I

The answer is yes. Rob, NC0B

Doug, Thanks for posting. I just ordered my kit and will give it a go. Can you repost the gland, so I can order one similar to yours? My PS-4 is working just fine, but given its age, I think I want to