X-treme eSSB Audio FORUM

I was wondering: is there an easy way to monitor your signal on a scope?
Found a web site: http://www.cleanrf.com/
Could one of these parts be of any use or is there an easier/cheaper way?

Have some RFI issues, especially on 10 meter. Thanks for pointing me towards Furman. Learned from their website that there is also a European version, suitable for our 220-240 volts http://www.furmansound.com/product.php?div=03&id=ClassicSeries_Export As I see it on their info page: three versions. ...

http://i.ebayimg.com/t/Lot-18-RCA-COMMAND-5751-12AX7-ECC83-Vacuum-Tube-NOS-NIB-Black-plate-Untested-VTG-/00/s/MTIwMFgxNjAw/z/zBUAAOxy2YtRw8sK/$T2eC16dHJGoFFvNw2n(,BRw8sJ8(Vw~~60_57.JPG Yes, looks good doesn't it? Set up at the moment is: SoundProjects T3 tube microphone, changed the mic element and...

Bought a 5751 on German E-bay, 15 euro's. Could see on the photo that it had black anode plates, it's an RCA and when I compared it to an RCA Command it looks like a twin brother, most of the orange paint is gone. It tested good on the tube tester, so nice purchase. That is one thing European tube m...

OK, thanks for the info Voodoo Guru, I already bought/placed the C's, but if the C10 gives up, I will replace it with the C you mentioned. The adventure so far: Bought the Triple C from a local FM pirate station that stopped because the fines were getting to high for him. He told me that the unit so...

To whom it may concern: Electrolytic Caps in the switching power supply of the Triple-C: C10: 22 uF, 400 volts; C16: 220uF, 25 volts; C17: 100 uF, 25 volts; C19: 1000 uF, 6,3 volts; C20: 470 uF, 6,3 volts; C21: 1 uF, 50 volts; C22: 220 uF, 25 volts; C23: 100 uF, 25 volts; C24: 470 uF, 10 volts; C25:...

Thanks for the helpful information in modding the Triple C on this website. Just bought one on the internet, hope it will arrive soon. Want to modificate the C and order the parts from DigiKey. On the mod page it says: UPDATE 8-20-09: Due to several failures of several Electrolytic Caps in the switc...

Some nice 5751 photo's in this Ebay ad
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... ink:top:en
Pure tube porn

JJ2013 wrote:I appreciate it. Looks like this vendor is in Europe though : = (

73 de JJ
NI2M

OK, sorry my bad, found one with extension .nl (for The Netherlands) and assumed that the .com was USA located.

http://www.conrad.com/ce/en/Search.html ... ch=19+inch

Maybe this could be a good address?

Hi JJ, If you have some tube driven equipment in the rack and the tubes are a bit "microphonic" than yes the rumble of the fan could interfere with your audio. http://www.youtube.com/watch?v=13n1VCR6UXw&feature=youtu.be Another noise related problem could be that the microphone self is picking up th...

tnx and compliments for the sharp detailed photo.

Edit: in 2015 the photo is no longer available

Most Bellari equipment have two channels. When applying the mods is it sufficient (if you use only one channel) to change just the one tube in the channel that you use?

Run into your question, better late than never, ha, ha. I use an Aphex 230 it replaced my Symetrix 528E (528E is now in use on my 2/70 Icom 910 via Ibox into the rig, works fine) The 230 works nice, Big Bottom gives a lot of bottom indeed. Use a tube preamp (RP520) and compressor/limiter (RP583) as ...

Nice raplacement tubes Dave.
Was able to buy a second hand RP-520 yesterday, shipment is underway, will swap the 5751 Command tubes to that preamp and order some more opamps.

Unbelievable, didn't know that they counterfeit those as well. Luckily bought them at DigiKey. Thanks for bringing the counterfeit issue on the board, warning for us all.

Hi Dave,

I use the Electro Harmonix 12AY7 as well.
Upgraded both tubes to RCA's Command 5751 blackplates.
Works just fine. What tubes did you put in?

Chris

Hi KiloD9, Glad the tube swap works for you too. After my tube swap the sound is clearer. The pop filter is a nice addition and works well, haven't tried to turn the filter around, 180 degrees (they say that this changes the sound as well) The logo is on one side and it certainly looks best to use t...

Hi Larry, Yes, replaced the tube, had a couple of Philips 6201 goldpin tubes in the "junk box". This web site has nice info concerning equivalent tube types. http://www.thetubestore.com/Gain-Factor I'm very happy with the result of the swap, gave a Ham pal of mine a 6201 yesterday, for his TB1, have...

Both are valve\vacuum tube microphones, they both have a 12AY7 (6072) triode inside. Large membrane capsule microphones. I bought the T3 and another Ham radio amateur bought the TB1 Ordered two new capsules here: http://microphone-parts.com/ The RK-47 capsules were placed in the microphones and the ...