Re: [Drakelist] equivalent transistor for drake 2-C

NTE175 is listed as replacement. 73, Joe Pyles KC9LAD At 09:27 AM 7/8/2009, you wrote: Hi folks, I am in the need to change the output audio transistor 40310 in my drake 2-C. Is there a modern equivalent of the 40310 so I can easily replace it? 73, iz2oos

Re: [Drakelist] T-4X Trouble

Curt, Listen to the rig on a receiver.  Make sure you are not dipping on a harmonic.  I had one that acted similar some years ago (so memory might be off some). Ended up someone had twiddled the perselector rack caps.  Don't go twiddling them.  I remember I had quite a time getting that one

Re: [Drakelist] T-4X Trouble

Hi Curt, In the temporary (I hope) absence of Garey, K4OAH, who could probably tell you just what to look for, I'll jump in with a cupla thoughts. First, check the dropping resistor in the plate line to the 12BY7 driver tube. I think it's 470 ohm. They often go high and will reduce your

[Drakelist] Cable Labels for C-Line for sale

Here's a nice touch for your C-Line or 2C, 2NT or TR4C cables. I have a complete card of cable labels in great condition. AFAIK, the adhesive is still just fine, but I didn't want to peel one off to verify it. It's pretty clear that I'm stopping at the B-Line for the forseeable future, so these

[Drakelist] TR-5

I have a TR-5, serial no. 1465, that I bought at a hamfest several years ago and it has been sitting unused.I had planned to use it as a spare rig to loan out, use for Field Day, etc.Then I found out that they are somewhat rare and it was put on the shelf.I'm not much of a

[Drakelist] R-4b Alignment and troubleshooting help

Hi All I have a nice R-4B that works and am now trying to get it perfect. I have a couple of questions that I think you guys know the answers to. 1. What is the voltage that should be athe collector of Q6 the BFO. I think based on looking at other Drake schematics that it should be 10 volts

Re: [Drakelist] DRAKE R7 ACCESSORY SOCKET

On Fri, 10 Jul 2009 21:12:42 -0700, Michael Miller wrote: Does anyone out there know what the current limitations are for the R7 receiver 13.6 VDC output, pins 10(+) and 3(GND) of the accessory socket? I want to operate a RV75 from this source. Michael, The R7 was designed to accept a RV75

Re: [Drakelist] equivalent transistor for drake 2-C

I've replaced the audio output device in a couple of 2C's with the NTE175 and had NO oscillation problems. 73, Joe Pyles KC9LAD At 11:35 PM 7/10/2009, you wrote: I do NOT recommend the NTE175. It is high speed high voltage switching transistor. Because it is a double-diffused device about