¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date
Re: TR7 with low power on 15 and 10 meter
Hi Raoul, Nice to see you are still at it. You will be better off with the version 2 predriver. 95 Watts on 15m is a good sign. If you have not seen this yet, here is a discussion of the V2 board
By Jim Shorney · #76810 ·
Re: TR7 with low power on 15 and 10 meter
Good morning Jim, It's been a long time since your last message... My apologies for taking so long to answer you; lots of home distractions here... Trying to obtain more power in 10 and 15 meters, I
By Raoul Meunier · #76809 ·
Re: Soft Rubber Eqp't Feet
3M was the major US manufacturer for Adhesive Rubber Feet. 3M? Bumpon? Protective Products which featured a urethane composition with a pressure sensitive
Re: FW: FW: [cca] wee bit off topic
If the charger is compatible with the number of cells in your battery pack(s) it *should* work. You will want to be careful of charge rates. If the batteries are not rated for fast charge you could
By Jim Shorney · #76807 ·
Re: 6JB6 Tube Tester Adapter
I¡¯ll take a 6JB6 PC board Gary W0DVN
By Gary Follett · #76806 ·
Re: 6JB6 Tube Tester Adapter
/g/DRAKE-RADIO/files/VE3FWF/6JB6%20Tube%20Tester%20Adapter/6JB6%20Tube%20Tester%20Adapter_v1.2.pdf I have 11 of the PCBs in stock for this project. Price is $7.00 US including
FW: FW: [cca] wee bit off topic
I apologize in advance if this offends anyone, but since there are sooo MANY very skilled electronic ops answering lots of tech queries, I thought to take the plunge. I had a chance to
By NU2W · #76804 ·
Re: R-4C Low audio output
Either amp, the original or mine, should clip on a typical signal about 3 or 4 o¡¯clock. The IF signal into the protect detector should be about 600 mV P-P above the AGC threshold. If the audio amp
By Rob Sherwood · #76803 ·
Re: R-4C Low audio output
Not necessarily. The mod is great if done well. I would simply look at how well it was installed. Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from [Proton
By Steve Wedge, W1ES/4 · #76802 ·
Re: R-4C Low audio output
Either stock or with the Sherwood amp, it should be plenty before 12 o¡¯clock. You could have component drift or someone used a different pot. Steve Wedge, W1ES/4 Time flies like an arrow. Fruit
By Steve Wedge, W1ES/4 · #76801 ·
Re: Soft Rubber Eqp't Feet
This is a perennial topic. Museum putty - or 3M or Gorilla mounting putty works very well. However, a better solution I've used for many years allows instant moving or changing of the telegraph
By Pete Ferrand · #76800 ·
Re: R-4C Low audio output
Working as it did before the change¡­. M
By Malcolm G4TJK <charlie.porter1@...> · #76799 ·
Re: R-4C Low audio output
Steve, Are you suggesting the removal of the AF mod? Do you have instructions? Many thank, Malcolm.
By Malcolm G4TJK <charlie.porter1@...> · #76798 ·
Re: R-4C Low audio output
Thanks for your thoughts! I get audio, but not the level that I¡¯ve had with other examples. The AF gain is at around the 3pm position all of the time. Vol with headphones is also low-level. M
By Malcolm G4TJK <charlie.porter1@...> · #76797 ·
Re: R-4C Low audio output
Implementation of the mods is my suspect No. 1. I will assume that the audio amp mod was done. Look around the work done to install that amp. Cold solder joints, broken wires, etc. The extreme
By Steve Wedge, W1ES/4 · #76796 ·
Re: What's the best way to learn tube electronics?
M0HKG - Martin via groups.io writes: It's not a proper Britishization if they didn't insert all the missing 'u's :-) --lyndon (whose view on this is coloured by being Canadian)
By Lyndon VE7TFX <lyndon@...> · #76795 ·
Re: What's the best way to learn tube electronics?
From my cursory flick through, I'd say that the adaptions for British and Commonwealth Usage comprise replacing the work tube with valve, and 110 VAC / 60 Hz with 240 VAC / 50 Hz. I did think that
Re: R-4C Low audio output
Sorry, Damien G3XER ________________________________ Sent: 19 March 2024 15:43 To: [email protected] <[email protected]> Subject: Re: [DRAKE-RADIO] R-4C Low audio output Hello Malcolm, I am
By Damien Mannix · #76793 ·
Re: R-4C Low audio output
Hello Malcolm, I am sure you will get plenty of good advice but, for what it is worth, I do not think changing all the tubes was a good idea! 73 Damien B3XER ________________________________ Sent:
By Damien Mannix · #76792 ·
Re: R-4C Low audio output
Hi, Malcolm.? I presume the S-meter is moving in time with any input signal(s). If yes, check the?1/4" headphone jack in the front of the radio. There may be sufficient corrosion to prevent the
By Bob Loving · #76791 ·