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Re: TR-4 #ForSale
That's very true. Fish have no place in final amplifiers... joseph n. graif k4jng
By Joseph K4JNG · #74781 ·
Re: TR-4 #ForSale
*** I once built a linear into an ARC-5 transmitter cabinet. It had 4 6LQ6 tubes. I bought them at Radio Shack, which had a *lifetime guarantee* on their tubes. I put that Radio Shack receipt in an
By jerry-KF6VB · #74780 ·
Re: Going price for twins
The older Twins¡¯ value is determined by, in this order, cosmetic condition, operative condition and which version of the receiver you have. It¡¯s a somewhat complex calculation. A really nice
By Steve Wedge, W1ES/4 · #74779 ·
Re: TR-4 #ForSale
I will qualify that. 200W, on 40 & 80, into a dummy load. 180W on 20 150+ on 15 & 10. Yes, 100W is low, especially with replaced tubes -- though 8 years is enough time to wear them out if proper
By Steve Wedge, W1ES/4 · #74778 ·
Going price for twins
Can someone please give me an idea what a R4A and T4X might be worth. I have a pair and would like to part with it. I just spent a small fortune on new tubes for the R4A. Guess I will need to eat
By barry halterman <kthreebo@...> · #74777 ·
Going price for twins
Can someone please give me an idea what a R4A and T4X might be worth. I have a pair and would like to part with it. I just spent a small fortune on new tubes for the R4A. Guess I will need to eat
By barry halterman <kthreebo@...> · #74776 ·
Re: TR-4 #ForSale
170-180 out here¡­.. Joe ¨C W7RKN From: [email protected] [mailto:[email protected]] On Behalf Of Joe WB9SBD Subject: Re: [DRAKE-RADIO] TR-4 #ForSale 100 watts is not right. Every TR-4 I
By Joe - W7RKN · #74775 ·
Re: TR-4 #ForSale
100 watts is not right. Every TR-4 I have ever had and used has made close to 200 watts CW OUT. some even a bit more. 100 watts and something isn't right. Joe WB9SBD
By Joe WB9SBD <nss@...> · #74774 ·
#ForSale #AC-4 #MS-4 #ForSale #AC-4 #MS-4
This equipment has all been sold. Thanks Joe Z. for reminding me about this ad. 12-31-2024. Need to thin out the radio collection, the kids are starting to worry about how much work it's going to be
Re: 2-C Audio Circuit Capacitor Question
I /believe/ the "pointed end" (with the lead sticking out) is + ? Tantalums do NOT like to be hooked up reverse polarity! Let us know how you do. 73, Jim W7RY -- Thanks and 73, Jim W7RY
By Jim W7RY <jimw7ry@...> · #74772 ·
Re: S meter sticks
I was able to remove the meter from my TR7. It appears when I was removing it, the meter mounting was loose. I did check and the movement is good so no problems there. Replaced the meter and made sure
By K6OXN Bob · #74771 ·
Re: 2-C Audio Circuit Capacitor Question
Thanks...got one ordered. --Ed, N3CW--
By Ed G · #74770 ·
Re: 2-C Audio Circuit Capacitor Question
That part is a 1 uF. Possibly tantalum ¡ª which are sensitive to polarity. Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from [Proton
By Steve Wedge, W1ES/4 · #74769 ·
Re: 2-C Audio Circuit Capacitor Question
Looks like an axial lead (a.k.a. Bullet) Tantalum Electrolytic. Sent: Wednesday, November 29, 2023 7:38 PM To: [email protected] Subject: [DRAKE-RADIO] 2-C Audio Circuit Capacitor Question Working
By Omni · #74768 ·
2-C Audio Circuit Capacitor Question
Working on my 2-C, and am replacing some capacitors.? When removing C64 in the audio section, I notice it has some type of insulating material or shielding under it, between cap and PC board. I tried
By Ed G · #74767 ·
Re: TR7 low band TX oscillation
Replacing PS75 by PS7 is a right move. I have a second set TR7 powered by PS75. Found that PS75 has no voltage regulation. DC output sags when running higher power affecting the transmission envelope.
By Kam VA6CA · #74766 ·
Re: TR7 low band TX oscillation
I also removed the AC control from my TR7 as I don't like have AC main running inside it. I terminated the AC power control cable with the jones connector in a plastic box instead of the radio. And
By Kam VA6CA · #74765 ·
Re: TR7 low band TX oscillation
I was imagining something similar to the "standby" power source in modern computers inside the PS7. One could even pick it off the incoming mains and rectify/filter it. 73 -Jim NU0C "Dieter Horst"
By Jim Shorney · #74764 ·
Re: TR7 low band TX oscillation
That is correct. I also run my R7 from external DC. It is much cooler. 73 -Jim NU0C "Joseph K4JNG" <jgraif1@...> wrote:
By Jim Shorney · #74763 ·
Re: TR7 low band TX oscillation
The DC connector on the back of the R7 is labeled ¡°In/Out¡±. I was planning on using it to power my CW75. So, does that mean if the AC cord is used, then the DC voltage is ¡°out¡± and if it is
By Joseph K4JNG · #74762 ·