¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date
AC-4 Power Supply 10K Bias Trimmer Replacement
I purchased an AC-4 power supply and noticed one of the 3 lugs was snapped off. Lots of 10Ks out there, but not with two mounting fins for the case. Has anyone replaced these and found a suitable
By Joe W7BWA · #82519 ·
Re: 7077 Mic
Are you talking about a D-104 element? If so it should measure open circuit for DC. It should look like a capacitor. If you are getting resistance it is defective or else you are measuring something
By Richard Knoppow · #82518 ·
Re: The mysteriously modified 7077 (and nothing else¡­)
I have just about run to the end of my patience with apps and webpages that still think they¡¯re in 1993. I should be able to up load photos. I will try again. Steve Wedge, W1ES Time flies like an
By Steve Wedge, W1ES/4 · #82517 ·
My Semiconductor Inventory
As promised, this is my semiconductor inventory. Some of the most common ones (ex.: 2N2222) I want to keep a minimum of 5 units. There are others here that could come in handy in quite a few pieces of
By Steve Wedge, W1ES/4 · #82516 ·
Re: Drake R4B vs R4C
Hi Scott, have you read the VE3EFJ "Drakemod" manifesto? If I recall Wayne's verbiage, it's something like this: The R-4B is a terrific receiver out of the box and it does everything well, however you
By Craig W8CS · #82515 ·
Re: Drake R4B vs R4C
Scott The R4C has sharper crystal filters but other than the standard filter for SSB you had to purchase the AM filter if you wanted 4KC or 6KC selectivity and you needed to purchase CW and RTTY
By amfone · #82514 ·
Re: Drake TR7, TX issue any ideas?
All right I promise.. I'll stop spamming the group now :). But one more thing that appears to be a modification, again any one got an idea of why and is it a known modification? I'm referring to the 2
By Michael Jensen · #82513 ·
Drake R4B vs R4C
Hello: I have a question about the differences between the Drake R4B and R4C receivers. In some of the online chatter I have been reading, it is my understanding that the R4B is considered to be
By Scott N1IA · #82512 ·
Re: The mysteriously modified 7077 (and nothing else¡­)
Can't see the pix! - Jerry, KF6VB
By jerry-KF6VB · #82511 ·
Re: Drake Collection For Sale
Contact Ken at ken19604520 at sbcglobal.net
By Steve W1SRD · #82510 ·
The mysteriously modified 7077 (and nothing else¡­)
Here are some pics of what I found inside. I have doubts as to the originality of the element itself, as it measures 430 ohms, resistive. First photo shows what the element looks like in its housing.
By Steve Wedge, W1ES/4 · #82509 ·
Drake Collection For Sale
I am posting for a local ham, K6SAD, I recently purchased a TR-4CW and C line from. He has a good size collection he is trying to sell. Pictures available on request. Please contact Ken directly at
By Steve W1SRD · #82508 ·
Re: 7077 Mic
Welp, this thread has been taken over, so I¡¯ll post a new one. Steve Wedge, W1ES Time flies like an arrow. Fruit flies like a banana. Sent from [Proton Mail](https://proton.me/mail/home) for iOS
By Steve Wedge, W1ES/4 · #82507 ·
Re: Drake TR7, TX issue any ideas?
On further inspection I found this: Those 2 pin diodes connected to a cap? It looks like some modification, how ever I see no holes in the PCB where those 2 pin diodes would go otherwise. Early
By Michael Jensen · #82506 ·
R4B and T4XC Compatble?
Will a R4B and a T4XC transceive?? Is there any difference in the interconnections from if I were using R4B with T4XB? Thanks and '73 Carl - W5SU Dallas TX
By C Solomon · #82505 ·
Re: 7077 Mic
Is it going to need anything special to hook it up to a Drake 4 line T-4XC. Without the nine volt battery. ________________________________ Sent: Monday, February 3, 2025 9:24:55 AM To:
By Lorne VE6CSR · #82504 ·
Re: 7077 Mic
Interesting. Looks like that amp has an input impedance of about 1 megohm, which is set by the base biasing resistor. - Jerry, KF6VB
By jerry-KF6VB · #82503 ·
Re: 7077 Mic
From the inside bottom of a Silver Eagle VE7LXX ________________________________ Sent: Monday, February 3, 2025 7:50:20 AM To: [email protected] <[email protected]> Subject: Re: [DRAKE-RADIO]
By Lorne VE6CSR · #82502 ·
Re: 7077 Mic
Attached is a file I have on the amplified d104 Ralph ku4pt
By Ralph Mowery · #82501 ·
Drake TR7, TX issue any ideas?
Hardly been using it for TX until recently, then I notice that on 10 Meter output is close to 2.5 watts.. Okay, not much.. On 15 meters the current draw is close to 31 amps to produce 100watts! Quite
By Michael Jensen · #82500 ·