开云体育

Tom, It was probably rejected because no call sign was used and no contact info given. The only requirement for the group is all post must be signed, and any sale items should be listed and for good

Hello- Are there some instructions regarding posts to this group- what is or is not allowed, photos, etc? The group settings indicate that all members can post and that posts do not require approval

I meant to mention that it's a centre-tapped winding. Steve Wedge, W1ES/4 Time flies like an arrow.? Fruit flies like a banana. Sent with Proton Mail secure email.

Ryan, first of all, it probably isn't your fault. When one of these sets is purchased, most of the time we don't know when it was last used but when it was last used, it probably worked okay. One

While working on a TR-4Cw RIT model, I noticed that with the covers in place, PTO drift is very small, about 200 Hz from start to being fully warmed up after an hour. However, with the covers off,

Hello all. I recently acquired a T-4XC and R-4C that had been stored for years and were in unknown operational condition. Before attempting to bring the rig up, I did a visual inspection and pulled

Absolutely. Might be the best looking TR-3 left in the world. Only thing I would do would be to re-color the red dial knob with a red Sharpie permanent marker. 73, Gary WB6OGD

Very nice! Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from Proton Mail for iOS

Nice looking rig!

sorry lost the picture some where Frank PA2FA

Frank: I'm rebuilding one now - if you don't already have it take a look at the service manual at: http://www.radiomanual.info/schemi/Surplus_Radioamateur/Drake_TR-3_user_other_WA0TOP.pdf 73's Don W.

No, electret mics have a buffer amp built in. You just need a few volts of DC bias to make them work. Plenty of info can be found on the internet. 73 -Jim NU0C "Bill Leonard N0CU"

Hello all, My name is Frank and callsign is PA2FA from the Netherlands. I recently acquired a Drake TR-3 complete with AC-4 Power supply and a Microphone. As I am complete newbie with Tube

Yes, I’m fortunate to have several sets of XCelite hex and Bristol bits, with handles. It makes adjusting the PTO tension a piece-o-cake. I’ve never really messed with C era PTO’s with respect

The DX Engineering speech processor makes a big difference on boosting the audio. I an getting great audio reports when mine is on.? Bill N1WL? On Tue, Feb 7, 2023 at 1:52 PM, Rick

Howdy Bill, I would think that since you already have a "MIC GAIN" control you wouldn't need much more output over that supplied by typical microphones.? So you would want to base the gain on that.

Steve: Very true. However, in most cases I have found that the rear adjustment has not been messed with. Of course there are exceptions. It’s worth a check with the PTO out and stripped down for

The get an electret mic to work will I need to build an audio amp to increase the output level? If so, about how much gain is needed? -- Bill N0CU

Yes it works similarly to the 4 Line. Relieve tension on the idler gear and move the dial whilst it is loose. 73, Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from

Then there is the tension screw that comes in from the back of the PTO. Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from Proton Mail for iOS