|
Hello Steve,
Is the control you used still available or is it obsolete? Thanks
Joseph
On Monday, January 6, 2025 at 12:51:03 PM EST, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
I just took a quick look inside my late (28xxx) R-4C and it looks like there are circuits and structures that would interfere with a shield extension but I can hear the modulation a lot more when the slug/rod is out the back.
My receiver is totally stock except for having changed out the original AFG/RFG controls for a nice concentric plastic knob set that looks just like what Drake ¡°should have¡± put there.
I will likely leave things as they are, as it¡¯s more of a collector piece that I play with. ?It¡¯s similar in the auto world as a stock vs modified ¡°thing¡±. ?I am also not short on things that I need to do.
73,?
W1ES
|
I'm not sure.? I bought the set at a hamfest and it had the knobs on it already.
I'm not one for making "mods" to vintage equipment but this one is really, really nice and is easily reversible.
Trying to find anything on the internet today is such a death march that I'm afraid that I'll leave it to you.? The type of knob used on 4-Line is called a "bar knob".? I'll try searching but I'm sure I will get 10 pages of "Buy it here" rubbish...
My patience with the internet is thinner than rice paper at this point.? It has been ruined.
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Monday, January 6th, 2025 at 12:57 PM, Joseph K7CBR via groups.io <k7cbr@...> wrote:
Hello Steve,
Is the control you used still available or is it obsolete? Thanks
Joseph
On Monday, January 6, 2025 at 12:51:03 PM EST, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
I just took a quick look inside my late (28xxx) R-4C and it looks like there are circuits and structures that would interfere with a shield extension but I can hear the modulation a lot more when the slug/rod is out the back.
My receiver is totally stock except for having changed out the original AFG/RFG controls for a nice concentric plastic knob set that looks just like what Drake ¡°should have¡± put there.
I will likely leave things as they are, as it¡¯s more of a collector piece that I play with. ?It¡¯s similar in the auto world as a stock vs modified ¡°thing¡±. ?I am also not short on things that I need to do.
73,?
W1ES
|
Some years ago, Sherwood Engineering listed the concentric RF/AF knobs in its catalog as an upgrade.? Rob Sherwood might be able to provide the name of the manufacturer and the part numbers for them.?
Art Delibert, KB3FJO
toggle quoted message
Show quoted text
I'm not sure.? I bought the set at a hamfest and it had the knobs on it already.
I'm not one for making "mods" to vintage equipment but this one is really, really nice and is easily reversible.
Trying to find anything on the internet today is such a death march that I'm afraid that I'll leave it to you.? The type of knob used on 4-Line is called a "bar knob".? I'll try searching but I'm sure
I will get 10 pages of "Buy it here" rubbish...
My patience with the internet is thinner than rice paper at this point.? It has been ruined.
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Monday, January 6th, 2025 at 12:57 PM, Joseph K7CBR via groups.io <k7cbr@...> wrote:
Hello Steve,
Is the control you used still available or is it obsolete? Thanks
Joseph
On Monday, January 6, 2025 at 12:51:03 PM EST, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
I just took a quick look inside my late (28xxx) R-4C and it looks like there are circuits and structures that would interfere with a shield extension but I can hear the modulation a lot more when the slug/rod is out the back.
My receiver is totally stock except for having changed out the original AFG/RFG controls for a nice concentric plastic knob set that looks just like what Drake ¡°should have¡± put there.
I will likely leave things as they are, as it¡¯s more of a collector piece that I play with. ?It¡¯s similar in the auto world as a stock vs modified ¡°thing¡±. ?I am also not short on things that I need to do.
73,?
W1ES
|
I¡¯ll see if I can find it.
An internet search, as expected, turned up mostly things that weren¡¯t even knobs.
Steve Wedge, W1ES
Time flies like an arrow. Fruit flies like a banana.
On Mon, Jan 6, 2025 at 5:41 PM, Art Delibert via groups.io < radio75a3@...> wrote:
Some years ago, Sherwood Engineering listed the concentric RF/AF knobs in its catalog as an upgrade.? Rob Sherwood might be able to provide the name of the manufacturer and the part numbers for them.?
Art Delibert, KB3FJO
I'm not sure.? I bought the set at a hamfest and it had the knobs on it already.
I'm not one for making "mods" to vintage equipment but this one is really, really nice and is easily reversible.
Trying to find anything on the internet today is such a death march that I'm afraid that I'll leave it to you.? The type of knob used on 4-Line is called a "bar knob".? I'll try searching but I'm sure I will get 10 pages of "Buy it here" rubbish...
My patience with the internet is thinner than rice paper at this point.? It has been ruined.
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with
secure email.
On Monday, January 6th, 2025 at 12:57 PM, Joseph K7CBR via groups.io <k7cbr@...> wrote:
Hello Steve,
Is the control you used still available or is it obsolete? Thanks
Joseph
On Monday, January 6, 2025 at 12:51:03 PM EST, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
I just took a quick look inside my late (28xxx) R-4C and it looks like there are circuits and structures that would interfere with a shield extension but I can hear the modulation a lot more when the slug/rod is out the back.
My receiver is totally stock except for having changed out the original AFG/RFG controls for a nice concentric plastic knob set that looks just like what Drake ¡°should have¡± put there.
I will likely leave things as they are, as it¡¯s more of a collector piece that I play with. ?It¡¯s similar in the auto world as a stock vs modified ¡°thing¡±. ?I am also not short on things that I need to do.
73,?
W1ES
|
It was Kurz Kasch who made the knobs for me. ?No longer available.?
Rob, NC0B?
toggle quoted message
Show quoted text
On Jan 6, 2025, at 3:41?PM, Art Delibert via groups.io <radio75a3@...> wrote:
?
Some years ago, Sherwood Engineering listed the concentric RF/AF knobs in its catalog as an upgrade.? Rob Sherwood might be able to provide the name of the manufacturer and the part numbers for them.?
Art Delibert, KB3FJO
I'm not sure.? I bought the set at a hamfest and it had the knobs on it already.
I'm not one for making "mods" to vintage equipment but this one is really, really nice and is easily reversible.
Trying to find anything on the internet today is such a death march that I'm afraid that I'll leave it to you.? The type of knob used on 4-Line is called a "bar knob".? I'll try searching but I'm sure
I will get 10 pages of "Buy it here" rubbish...
My patience with the internet is thinner than rice paper at this point.? It has been ruined.
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Monday, January 6th, 2025 at 12:57 PM, Joseph K7CBR via groups.io <k7cbr@...> wrote:
Hello Steve,
Is the control you used still available or is it obsolete? Thanks
Joseph
On Monday, January 6, 2025 at 12:51:03 PM EST, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
I just took a quick look inside my late (28xxx) R-4C and it looks like there are circuits and structures that would interfere with a shield extension but I can hear the modulation a lot more when the slug/rod is out the back.
My receiver is totally stock except for having changed out the original AFG/RFG controls for a nice concentric plastic knob set that looks just like what Drake ¡°should have¡± put there.
I will likely leave things as they are, as it¡¯s more of a collector piece that I play with. ?It¡¯s similar in the auto world as a stock vs modified ¡°thing¡±. ?I am also not short on things that I need to do.
73,?
W1ES
|
I wasn¡¯t clear. No longer available from Kurz Kasch. ?Rob, NC0B?
toggle quoted message
Show quoted text
On Jan 6, 2025, at 5:07?PM, Rob Sherwood via groups.io <rob@...> wrote:
? It was Kurz Kasch who made the knobs for me. ?No longer available.?
Rob, NC0B?
On Jan 6, 2025, at 3:41?PM, Art Delibert via groups.io <radio75a3@...> wrote:
?
Some years ago, Sherwood Engineering listed the concentric RF/AF knobs in its catalog as an upgrade.? Rob Sherwood might be able to provide the name of the manufacturer and the part numbers for them.?
Art Delibert, KB3FJO
I'm not sure.? I bought the set at a hamfest and it had the knobs on it already.
I'm not one for making "mods" to vintage equipment but this one is really, really nice and is easily reversible.
Trying to find anything on the internet today is such a death march that I'm afraid that I'll leave it to you.? The type of knob used on 4-Line is called a "bar knob".? I'll try searching but I'm sure
I will get 10 pages of "Buy it here" rubbish...
My patience with the internet is thinner than rice paper at this point.? It has been ruined.
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Monday, January 6th, 2025 at 12:57 PM, Joseph K7CBR via groups.io <k7cbr@...> wrote:
Hello Steve,
Is the control you used still available or is it obsolete? Thanks
Joseph
On Monday, January 6, 2025 at 12:51:03 PM EST, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
I just took a quick look inside my late (28xxx) R-4C and it looks like there are circuits and structures that would interfere with a shield extension but I can hear the modulation a lot more when the slug/rod is out the back.
My receiver is totally stock except for having changed out the original AFG/RFG controls for a nice concentric plastic knob set that looks just like what Drake ¡°should have¡± put there.
I will likely leave things as they are, as it¡¯s more of a collector piece that I play with. ?It¡¯s similar in the auto world as a stock vs modified ¡°thing¡±. ?I am also not short on things that I need to do.
73,?
W1ES
|
Thanks, Rob.? I guess I was lucky to have found an R-4C that has them.? It looked like what that knob set SHOULD have looked like.? I've never been a fan of those pointy metal ones for RF gain.? The bandwidth pointer is longer and was perfect for that application.
I actually had two complete C Lines that I bought, I think, in 2022 and the first one had those knobs.? The receiver wasn't as nice as the second set, so I swapped. It just looks as if it belongs there!
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Monday, January 6th, 2025 at 7:07 PM, Rob Sherwood via groups.io <rob@...> wrote:
It was Kurz Kasch who made the knobs for me. ?No longer available.?
Rob, NC0B?
On Jan 6, 2025, at 3:41?PM, Art Delibert via groups.io <radio75a3@...> wrote:
?
Some years ago, Sherwood Engineering listed the concentric RF/AF knobs in its catalog as an upgrade.? Rob Sherwood might be able to provide the name of the manufacturer and the part numbers for them.?
Art Delibert, KB3FJO
I'm not sure.? I bought the set at a hamfest and it had the knobs on it already.
I'm not one for making "mods" to vintage equipment but this one is really, really nice and is easily reversible.
Trying to find anything on the internet today is such a death march that I'm afraid that I'll leave it to you.? The type of knob used on 4-Line is called a "bar knob".? I'll try searching but I'm sure
I will get 10 pages of "Buy it here" rubbish...
My patience with the internet is thinner than rice paper at this point.? It has been ruined.
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Monday, January 6th, 2025 at 12:57 PM, Joseph K7CBR via groups.io <k7cbr@...> wrote:
Hello Steve,
Is the control you used still available or is it obsolete? Thanks
Joseph
On Monday, January 6, 2025 at 12:51:03 PM EST, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
I just took a quick look inside my late (28xxx) R-4C and it looks like there are circuits and structures that would interfere with a shield extension but I can hear the modulation a lot more when the slug/rod is out the back.
My receiver is totally stock except for having changed out the original AFG/RFG controls for a nice concentric plastic knob set that looks just like what Drake ¡°should have¡± put there.
I will likely leave things as they are, as it¡¯s more of a collector piece that I play with. ?It¡¯s similar in the auto world as a stock vs modified ¡°thing¡±. ?I am also not short on things that I need to do.
73,?
W1ES
|
Yep -- I got that.
Looks like there's one of the AF GAIN ones currently on eBay but no concentric one.
eBay is where you're going to find them, eventually...
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Monday, January 6th, 2025 at 7:07 PM, Rob Sherwood via groups.io <rob@...> wrote:
It was Kurz Kasch who made the knobs for me. ?No longer available.?
Rob, NC0B?
On Jan 6, 2025, at 3:41?PM, Art Delibert via groups.io <radio75a3@...> wrote:
?
Some years ago, Sherwood Engineering listed the concentric RF/AF knobs in its catalog as an upgrade.? Rob Sherwood might be able to provide the name of the manufacturer and the part numbers for them.?
Art Delibert, KB3FJO
I'm not sure.? I bought the set at a hamfest and it had the knobs on it already.
I'm not one for making "mods" to vintage equipment but this one is really, really nice and is easily reversible.
Trying to find anything on the internet today is such a death march that I'm afraid that I'll leave it to you.? The type of knob used on 4-Line is called a "bar knob".? I'll try searching but I'm sure
I will get 10 pages of "Buy it here" rubbish...
My patience with the internet is thinner than rice paper at this point.? It has been ruined.
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with secure email.
On Monday, January 6th, 2025 at 12:57 PM, Joseph K7CBR via groups.io <k7cbr@...> wrote:
Hello Steve,
Is the control you used still available or is it obsolete? Thanks
Joseph
On Monday, January 6, 2025 at 12:51:03 PM EST, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
I just took a quick look inside my late (28xxx) R-4C and it looks like there are circuits and structures that would interfere with a shield extension but I can hear the modulation a lot more when the slug/rod is out the back.
My receiver is totally stock except for having changed out the original AFG/RFG controls for a nice concentric plastic knob set that looks just like what Drake ¡°should have¡± put there.
I will likely leave things as they are, as it¡¯s more of a collector piece that I play with. ?It¡¯s similar in the auto world as a stock vs modified ¡°thing¡±. ?I am also not short on things that I need to do.
73,?
W1ES
|
I just jumpered the RFG and used an on/off/volume pot on my TR-3.? I never use the RFG on any radios I own.
|
Are you still using electricity?
On Tuesday, January 7, 2025 at 06:57:40 PM EST, N3 EG <n3eg@...> wrote:
I just jumpered the RFG and used an on/off/volume pot on my TR-3.? I never use the RFG on any radios I own.
|
On Wed, Jan 8, 2025 at 03:13 AM, Joseph K7CBR wrote:
?
Are you still using electricity?
?
The RF Gain control has always been the most useless thing to put on a radio.? It's like a high/low switch on a vacuum cleaner, which should be called "Clean/Less Clean."? In the case of HF radios, it should be called the Ignore Weak Signal Stations And Screw Up Your S-Meter Reading Control.?
?
I've never found a good reason to use it in at least 52 years of HF listening, and it's totally useless on 10 meters and up.
|
All I can say is that I disagree. There are times when an RF gain control is quite useful. On radios where there is a good AVC the RF gain acts as a variable "delay" setting the threshold of the AVC.
BTW, if you think any S meter is accurate you are fooling yourself.
toggle quoted message
Show quoted text
On 1/8/2025 2:19 PM, N3 EG wrote: On Wed, Jan 8, 2025 at 03:13 AM, Joseph K7CBR wrote:
Are you still using electricity?
The RF Gain control has always been the most useless thing to put on a radio.? It's like a high/low switch on a vacuum cleaner, which should be called "Clean/Less Clean."? In the case of HF radios, it should be called the Ignore Weak Signal Stations And Screw Up Your S-Meter Reading Control.
I've never found a good reason to use it in at least 52 years of HF listening, and it's totally useless on 10 meters and up.
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
|
This old guy has been using old-fashioned "tube" radios for nearly 70 years and has found the RF gain control to be useful...leave the AF control at near max gain and use the RF control to control sensitivity, overload distortion, AGC help, and static interference,?etc.? With my solid state Yaesu gear, it seems not as useful as it is with the tube gear.? Dunno why that is. And yes, "S" meters aren't of much use.? Ears are better. Frank, W4NPN Certified troglodyte
On Wed, Jan 8, 2025 at 5:46?PM Richard Knoppow via <1oldlens1= [email protected]> wrote: ? ? ?All I can say is that I disagree. There are times when an RF gain
control is quite useful. On radios where there is a good AVC the RF gain
acts as a variable "delay" setting the threshold of the AVC.
? ? BTW, if you think any S meter is accurate you are fooling yourself.
On 1/8/2025 2:19 PM, N3 EG wrote:
> On Wed, Jan 8, 2025 at 03:13 AM, Joseph K7CBR wrote:
>
>? ? ?Are you still using electricity?
>
>
> The RF Gain control has always been the most useless thing to put on a
> radio.? It's like a high/low switch on a vacuum cleaner, which should be
> called "Clean/Less Clean."? In the case of HF radios, it should be
> called the Ignore Weak Signal Stations And Screw Up Your S-Meter Reading
> Control.
> I've never found a good reason to use it in at least 52 years of HF
> listening, and it's totally useless on 10 meters and up.
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
-- Frank Barnes
W4NPN
Chapel Hill, NC
Grid Square FM05
Cell 919.260.7955
|
I also use the RF gain control on my 75A-2 & 75A-4 receivers quite regularly
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Show quoted text
On Jan 8, 2025, at 4:46?PM, Richard Knoppow via groups.io <1oldlens1@...> wrote:
? All I can say is that I disagree. There are times when an RF gain control is quite useful. On radios where there is a good AVC the RF gain acts as a variable "delay" setting the threshold of the AVC.
BTW, if you think any S meter is accurate you are fooling yourself.
On 1/8/2025 2:19 PM, N3 EG wrote:
On Wed, Jan 8, 2025 at 03:13 AM, Joseph K7CBR wrote:
Are you still using electricity?
The RF Gain control has always been the most useless thing to put on a radio. It's like a high/low switch on a vacuum cleaner, which should be called "Clean/Less Clean." In the case of HF radios, it should be called the Ignore Weak Signal Stations And Screw Up Your S-Meter Reading Control.
I've never found a good reason to use it in at least 52 years of HF listening, and it's totally useless on 10 meters and up.
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
|
I guess you probably don't need to lower your noise floor for any reason. You must have DSP ears. I bet you can copy RTTY in your head too. On Wed, 08 Jan 2025 14:19:37 -0800 "N3 EG via groups.io" <n3eg@...> wrote: The RF Gain control has always been the most useless thing to put on a radio. -- 73 -Jim NU0C
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Funny thing is, lately, my TR7 is the rig that most benefits from lowering the RF gain a tad. Lots of popping on fast AVC, otherwise. The A's and B's areen't as bad. The C is in between...
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with Proton Mail secure email.
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Show quoted text
On Wednesday, January 8th, 2025 at 7:48 PM, Jim Shorney via groups.io <jimNU0C@...> wrote: I guess you probably don't need to lower your noise floor for any reason. You must have DSP ears. I bet you can copy RTTY in your head too.
On Wed, 08 Jan 2025 14:19:37 -0800
"N3 EG via groups.io" n3eg@... wrote:
The RF Gain control has always been the most useless thing to put on a radio.
--
73
-Jim
NU0C
|
On 2025-01-08 17:18, Steve Wedge, W1ES/4 via groups.io wrote: Funny thing is, lately, my TR7 is the rig that most benefits from
lowering the RF gain a tad. Lots of popping on fast AVC, otherwise.
The A's and B's areen't as bad. The C is in between... *** My latest boat anchor project REALLY wants the RF gain set down. It's a Signal/One CX7A. Signal One messed up the injection to the product detector, and if you have the RF gain all the way up, it distorts. Voices sound harsh. There's a fix - you change one resistor. Waiting for me to get a round tuit. - Jerry, KF6VB
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Rob Sherwood
Thomas W9TAB
Jim Shorney