On Feb 2, 2025, at 3:36?PM, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:

?

It is looking like I’ll need to do that. The current element fits but there are series capacitors and that tiny transformer. These components seem to be good (capacitors are dead-on).?

I was shocked to see all that stuff added in there (and with such poor workmanship).?

Just a straight element would simplify everything and I can rip all the other stuff out.?

73,

Steve Wedge, W1ES

Time flies like an arrow. Fruit flies like a banana.

Sent from for iOS

On Sun, Feb 2, 2025 at 18:15, KB9VY via groups.io <lcoblentz3@...> wrote:

I put the Heil element in mine. Works great now.

Larry - KB9VY

Sent from for iOS

On Sun, Feb 2, 2025 at 18:11, Steve Wedge, W1ES/4 via groups.io < w1es@...> wrote:

Hi, gang!

I went on to the 7238 Drake Pre-net this afternoon and strange things were happening.? I heard some noise in the speaker when the PTT was pressed and WB0IQK said that I sounded excessively tinny.? I was fortunate to have my $10 GE-branded Shure 444, which worked like a charm but, of course, I want to know what is wrong with the 7077, so I took it apart.

Oy, vey!? What a mess inside!? Someone had put in a couple of capacitors (low value) and what looks like a transformer.? It's all kludged in there, so I know this ain't no factory job!? Lots of lousy workmanship and electrical tape trying to hold things together!

The mic element I can't be sure if it's correct, though it looks like it all fits together like it should.? The mic element measures around 430 ohms on my Fluke 77.

Is this simply a case of the wrong element in this mic?? The TR7 manual specifies a high Z mic.? I am tempted to simply get a Heil element for high Z and being done with it.

If any of you have a 7077 mic, can you measure resistance across the mic element for me?? This should be from ground to pin 1 of the mic plug.

TNX & 73,

Steve Wedge, W1ES

Time flies like an arrow.? Fruit flies like a banana.

Sent with secure email.

It is looking like I’ll need to do that. The current element fits
but there are series capacitors and that tiny transformer. These
components seem to be good (capacitors are dead-on).
I was shocked to see all that stuff added in there (and with such poor
workmanship).
Just a straight element would simplify everything and I can rip all
the other stuff out.
73,
Steve Wedge, W1ES
Time flies like an arrow. Fruit flies like a banana.
Sent from Proton Mail [1] for iOS
On Sun, Feb 2, 2025 at 18:15, KB9VY via groups.io
<lcoblentz3@...> wrote:

I put the Heil element in mine. Works great now.
Larry - KB9VY
Sent from Proton Mail [1] for iOS
On Sun, Feb 2, 2025 at 18:11, Steve Wedge, W1ES/4 via groups.io <
w1es@... [2]> wrote:

Hi, gang!
I went on to the 7238 Drake Pre-net this afternoon and strange
things were happening. I heard some noise in the speaker when the
PTT was pressed and WB0IQK said that I sounded excessively tinny.
I was fortunate to have my $10 GE-branded Shure 444, which worked
like a charm but, of course, I want to know what is wrong with the
7077, so I took it apart.
Oy, vey! What a mess inside! Someone had put in a couple of
capacitors (low value) and what looks like a transformer. It's
all kludged in there, so I know this ain't no factory job! Lots
of lousy workmanship and electrical tape trying to hold things
together!
The mic element I can't be sure if it's correct, though it looks
like it all fits together like it should. The mic element
measures around 430 ohms on my Fluke 77.
Is this simply a case of the wrong element in this mic? The TR7
manual specifies a high Z mic. I am tempted to simply get a Heil
element for high Z and being done with it.
If any of you have a 7077 mic, can you measure resistance across
the mic element for me? This should be from ground to pin 1 of
the mic plug.
TNX & 73,
Steve Wedge, W1ES
Time flies like an arrow. Fruit flies like a banana.
Sent with Proton Mail [1] secure email.

Links:
------
[1]
[2]
[3] /g/DRAKE-RADIO/message/82474
[4] /mt/110961661/243852
[5] /g/DRAKE-RADIO/post
[6] /g/DRAKE-RADIO/editsub/243852
[7] /g/DRAKE-RADIO/leave/12260778/243852/767576506/xyzzy

I put the Heil element in mine. Works great now.

Larry - KB9VY

Sent from for iOS

On Sun, Feb 2, 2025 at 18:11, Steve Wedge, W1ES/4 via groups.io < w1es@...> wrote:

Hi, gang!

I went on to the 7238 Drake Pre-net this afternoon and strange things were happening.? I heard some noise in the speaker when the PTT was pressed and WB0IQK said that I sounded excessively tinny.? I was fortunate to have my $10 GE-branded Shure 444, which worked like a charm but, of course, I want to know what is wrong with the 7077, so I took it apart.

Oy, vey!? What a mess inside!? Someone had put in a couple of capacitors (low value) and what looks like a transformer.? It's all kludged in there, so I know this ain't no factory job!? Lots of lousy workmanship and electrical tape trying to hold things together!

The mic element I can't be sure if it's correct, though it looks like it all fits together like it should.? The mic element measures around 430 ohms on my Fluke 77.

Is this simply a case of the wrong element in this mic?? The TR7 manual specifies a high Z mic.? I am tempted to simply get a Heil element for high Z and being done with it.

If any of you have a 7077 mic, can you measure resistance across the mic element for me?? This should be from ground to pin 1 of the mic plug.

TNX & 73,

Steve Wedge, W1ES

Time flies like an arrow.? Fruit flies like a banana.

Sent with secure email.

Hi, gang!

I went on to the 7238 Drake Pre-net this afternoon and strange things were happening.? I heard some noise in the speaker when the PTT was pressed and WB0IQK said that I sounded excessively tinny.? I was fortunate to have my $10 GE-branded Shure 444, which worked like a charm but, of course, I want to know what is wrong with the 7077, so I took it apart.

Oy, vey!? What a mess inside!? Someone had put in a couple of capacitors (low value) and what looks like a transformer.? It's all kludged in there, so I know this ain't no factory job!? Lots of lousy workmanship and electrical tape trying to hold things together!

The mic element I can't be sure if it's correct, though it looks like it all fits together like it should.? The mic element measures around 430 ohms on my Fluke 77.

Is this simply a case of the wrong element in this mic?? The TR7 manual specifies a high Z mic.? I am tempted to simply get a Heil element for high Z and being done with it.

If any of you have a 7077 mic, can you measure resistance across the mic element for me?? This should be from ground to pin 1 of the mic plug.

TNX & 73,

Steve Wedge, W1ES

Time flies like an arrow.? Fruit flies like a banana.

Sent with secure email.

Good morning all:

I have never seen the AC-4 6-32 threaded foot ever installed on a 4-line box, new or used, and have owned upwards of 50 of these boxes and accessories over the years.

The new 4-line and 7-line radios all came with a hard plastic foot about 3/4" high (don't have one with me here to measure) that was installed with (I recall) a 10-24 screw to the 4 positions on the bottom of the box. That hard plastic foot had a rubber bumper installed over the screw hole on the bottom. Additionally, two extra plastic feet were included with a new radio with a couple of 10-24 threaded "rod" to join two feet together for the front, IF you wanted to have your radio sloped upwards. This always looked weird to me and never used the extra feet.

The bottom section of the 4-line cabinets in a hole had two large rubber bumpers with a rubber stem press-fit installed beside the rear feet, so you could just remove the large rear feet and your radio would have a slight upwards tilt towards the front. This seemed a better way to get an upward tilted radio, at least to me. Unfortunately, people often removed those rear bumpers (which were about 5/8" or 3/4" diameter) so they are often missing from used gear these days. That's probably why Steve is seeing the AC-4 threaded bumpers installed in their place.

The rubber tip bumpers for the bottom of the plastic feet are also often missing these days but they are available from McMaster-Carr, and KE9PQ at Nationwide Radio. The hard plastic feet are no longer available unless someone is harvesting them from old 4-lines, as far as I know. I believe KE9PQ often has them.

73

Peter

VE7PS

On Sun, Feb 2, 2025 at 6:40?AM Steve Wedge, W1ES/4 via <w1es=[email protected]> wrote:

If they're simply stuck on, chances are that they're not original. There are some rubber "nub" feet that came from Drake. They look like the ones that are usually found on the AC-4 (and that is where I believe that they originated). They have a machine screw and can be put at the rear with a couple of nuts to hold them. I've seen this on lots of sets and they may have come from the AC-4's that came with the sets when they were bought.

Steve Wedge, W1ES

Time flies like an arrow. Fruit flies like a banana.

Sent with secure email.

On Sunday, February 2nd, 2025 at 8:46 AM, Scott N1IA via <soakland5=[email protected]> wrote:

I just picked up a Drake T-4XB and noticed it came with very short rubber feet. Is this stock, or did someone remove the longer feet and replace them with the short stubby ones? They appear to be self-stick.

Is it difficult to put on the longer feet?

I have a TR4C and an R4C and neither have the short feet, but the long ones.

Scott N1IA

The lower part of the shield provides enough shielding without causing overheating. Nothing is missing.

-------- Original message --------

From: "Paul WB0CJB via groups.io" <wb0cjb@...>

Date: 2/2/25 7:59 AM (GMT-08:00)

To: [email protected]

Subject: [DRAKE-RADIO] Drake TR4C V6 & V7 tube shield needed?

While doing a lot of maintenance and repairs on my rig I noticed that the tube sockets for V6 and V7 were set up for tube shields. Yet neither one has a tube shield. In my manual neither tube shows a tube shield in the pictorial diagram. On some YouTube videos the rigs showed a tube shield on V7. I can't remember if there were any radios that had a tube shield on both tubes.

?

Does either tube need a tube shield installed? If so, which one (or both)?

?

Paul WB0CJB

I just picked up a Drake T-4XB and noticed it came with very short rubber feet. Is this stock, or did someone remove the longer feet and replace them with the short stubby ones? They appear to be self-stick.

Is it difficult to put on the longer feet?

I have a TR4C and an R4C and neither have the short feet, but the long ones.

Scott N1IA