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Thank you Steve. It is a great satisfaction to have the L75 Amp working in all respects. To see how the readings matches the manual and now it is easier to take care of it by reading the Plate and

Nice work Mark! It sounds like you are bringing a poor abused child back to useful existence. Well worth the time and trouble. The band switch detent is pretty light on these. Is is the ball and leaf

Wow, Great dedication! Congratulations. Marty KL7AM To: "DRAKE-RADIO" <[email protected]> Sent: Thursday, February 8, 2024 9:08:37 AM Subject: [DRAKE-RADIO] Drake TR-7 - A repair journey Hi to all

What a job!!! Thanks for sharing your journey and good luck with the TX! I also brought back life to two ?junk TR7s“. (Yours sounds really terrible…) You learn a lot about the radio that way.

Hi to all in the group. Below some findings from my repair journey with a TR-7 that you may find interesting. A couple of years ago, I acquired a Drake 'job lot' on eBay. Until this week, the TR-7

Clint, Yes, figured this out. Using the freq counter in my Tek 2465BCT scope. The good news: the Reference Oscillator is right on freq: 1.28000 MHz at TP114 The bad news: the VCXO appears not to be

I used these guys for my L4B. Work pretty good.? Drake 4-Line Blue Lamps | | | | Drake 4-Line Blue Lamps Don Buska Products - Drake 4-Line R4C, T4XC Lamp Kits | | | 73MarkW0NCL

I have an L-4B Amp. Love it!! The bulbs on my meters are starting to get dim. Want to replace them with LED's. Just inquiring if anyone has done this and is there any tricks that I need to know to add

Hi Rick, The TP114 test point should be a good place to get the frequency. This is to prevent loading on the oscillator. All I have got to go on is the schematic which isn’t a very good copy. It’s

Yes, my pics are pre-recap. Capars are a ticking bomb. Check often for strange spurs. "VE7PS" <ve7ps@...> wrote: -- 73 -Jim NU0C

Peter, I have downloaded the data sheets for the digital integrated circuits on the digital board and studied the ToO section of the manual until I can almost recite it verbatim. As I look at the

Not to worry! My memory is even shorter! Rick K8EZB

Rick: Duhhhh and you told me that! Memory is great....just really short. I'll crawl back under my rock now. Will peak out once in a while to find out how this ends though. 73 Peter VE7PS

Hi Mike. Looking quickly at the Offset Bd schematic, lines T, L, M, N should not be changing state in 140, 220 modes as these control the 5 Mhz offset for 440 Mhz. The 140, 220 and 10.7 Mhz (receiver

Peter, I have changed out all electrolytics in accordeance with a capacitor parts list provided by Jim. No Capar, mixed brands. Well ... yes, hopefully. All new caps tested before installing? for

Here is a photo of my RV-75 which is set for a TR7. So yours seems to be ok. Some where I have some notes on the position so will have to look. 73? Bob

Rick: FWIW...I notice you have different electrolytic caps in there - i.e. not CAPAR? Do they look original, I wonder, or have they been changed? If so...hopefully all done correctly! Jim can confirm,

Clint, Havent done this yet but its next on my list. But a bit of confusion here. The RV75 manual Section 5-5.3 REFERENCE OSCILLATOR ADJUSTMENT calls for a freq of 1.280000 MHz AT tp114, while your

I'll do this but after reviewing the complete alignment procedue in the manual, I'll also step through this to see if my unit is properly aligned (without making any adjustments). If it is not close,

Could it be that there is a programming arrangement somewhere on the board that selects the offset? Maybe a resistor jumper somewhere that has been installed? 73, Clint, VE3CMQ