Re: Viking II Question(s)
If you do a google search for Viking II CDC model, there? are a bunch?of references.? I had not heard?of the CDC model until you mentioned it.? Apparently it just fills in more non-ham frequencies than the standard?Viking II covers.
Other alternatives?? BC-610?? Collins KW broadcast transmitters?? If you really?want THE SIGNAL, I also know where there?is an operational 500,000 watt AM transmitter (GE/RCA/Westinghouse)...
Ken WA8JXM
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Re: Johnson Ranger II panel meter
If I don’t hear from Tom, N5AMA, I’ll let you know – sorry, I only have one!
73!
Mike/
K5MGR ? Mike Langner
929 Alameda Road NW
Albuquerque, NM 87114-1901
(505) 898-3212 home/home office
(505) 238-8810 cell
mlangner@...
?
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From: [email protected] < [email protected]> On Behalf Of Ashley Hall via groups.io Sent: Wednesday, January 31, 2024 5:31 PM To: [email protected]Subject: [EFJohnson-Amateur-Radio] Johnson Ranger II panel meter ? Hello We are also looking for a Johnson Ranger II?panel meter Please reply with price and availability, shipping to Oregon, 97113
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Johnson Ranger II panel meter
Hello We are also looking for a Johnson Ranger II?panel meter Please reply with price and availability, shipping to Oregon, 97113
Thank You Ms Ashley Hall
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Re: WTB: JOHNSON RANGER 2 meter
Better add, the Johnson equipment of course is also great. Have a Viking II ,Ranger, Challenger, Valiant, Valiant II and an Invader.?
Plan to use a few of also this weekend.
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Re: Viking II Question(s)
The DX-60 with the controlled carrier, is ideal for driving a (quality) linear amp . Simple audio mod (two disc caps) result in terrific sounding AM. My Dixey 60 drives a Gonset GSB-201 with 100w resting carrier and 600W on voice peaks.? ?AM Rally is this weekend, light the filaments !
Bill KE7KK
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Re: WTB: JOHNSON RANGER 2 meter
I have a Ranger meter which I’ll send to you for the cost of shipping.
Please let me know what address it should be sent to.
I picked it up at a hamfest years ago in case I ever came across a Ranger, which I haven’t.
I do have its little brother, the Navigator, which is fully restored and works perfectly.
I’ll look forward to hearing back from you!
Mike/
K5MGR
______________________________________ ? Mike Langner
929 Alameda Road NW
Albuquerque, NM 87114-1901
(505) 898-3212 home/home office
(505) 238-8810 cell
mlangner@...
?
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From: [email protected] < [email protected]> On Behalf Of Tom Smith Sent: Monday, January 29, 2024 9:17 PM To: [email protected]Subject: [EFJohnson-Amateur-Radio] WTB: JOHNSON RANGER 2 meter ? I’m looking for someone with a Ranger parts unit with a meter they are willing to sell. If you have one available, please contact me with the price with shipping to Texas (77429).
Thanks,
Tom N5AMA
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Re: Viking II Question(s)
Hi Mike. I
I've had several AM stations over the last 57 years or so, but have not operated AM recently.?
I think the nature of AM has changed over the years. It just doesn't seem to be as "gentlemanly" as it used to be when I ran my Heathkit DX-60A and Lafayette HA-350 combo.?
But that said, I do have a Ranger II that I am thinking of pairing with my National NC 300. Both require some work before I can put them on the air though.?
I'll probably add a little bit more oomph to my signal with my homebrew linear.? I know that's not a great thing to do from a purist AM standpoint, but right now it's seeming likely.?
Have fun!
Jeff W8KZW
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Re: Viking II Question(s)
I've been thinking about setting up an AM station for the low bands.? My friend Matt has told me that he really likes his Viking II, but my only problem is that it's so big and heavy!
I realize that with AM, the old boatanchors probably will out-talk the newer (smaller) gear, especially small transmillers like the Heathkit DX-60 and the Ranger I/II.
I've never owner a Viking II, but I've heard good things about them.? I'm curious about the special "CDC" model.? Can a regular Viking II be easily upgraded to the CDC model?
Upgrading a standard Viking II to a CDC is a humongous project with zero advantages.? Best not to get involved . Aside from the size and weight, a rebuilt Viking II is a good choice. Better choice is a rebuilt Valiant II. Much improved modulator and of course, more ooomph output. ( 3 6146's).
Does anyone have a better recommendation for 160, 80 and 40M AM operation?? BTW, I already have a Collins R-388 (51J-3) that I'm thinking about using with whatever transmitter I get.
Any words of advice?
Johnson Ranger I or Ranger II? II's are rare, occasionally they show up in horrible condition. Only difference between the I & II is the addition of 6 meters , different panel and meter, different dial and sometimes 6CL6GC or 5881's as modulators.
All this is our humble opinion.
Mike Harmon, WB0LDJ
mharmon at att dot net
?
?
Thank You
Kiss-Electronics
Ms Ashley Hall
183 N 5th PL.
Cornelius, Oregon
97113
?
?
W7DUZ
?
?
On Wednesday, January 31, 2024 at 03:17:51 PM PST, Mike Harmon <mharmon@...> wrote:
I've been thinking about setting up an AM station for the low bands.? My friend Matt has told me that he really likes his Viking II, but my only problem is that it's so big and heavy!
I realize that with AM, the old boatanchors probably will out-talk the newer (smaller) gear, especially small transmillers like the Heathkit DX-60 and the Ranger I/II.
I've never owner a Viking II, but I've heard good things about them.? I'm curious about the special "CDC" model.? Can a regular Viking II be easily upgraded to the CDC model?
Does anyone have a better recommendation for 160, 80 and 40M AM operation?? BTW, I already have a Collins R-388 (51J-3) that I'm thinking about using with whatever transmitter I get.
Any words of advice?
Mike Harmon, WB0LDJ
mharmon at att dot net
|
I've been thinking about setting up an AM station for the low bands.? My friend Matt has told me that he really likes his Viking II, but my only problem is that it's so big and heavy!
I realize that with AM, the old boatanchors probably will out-talk the newer (smaller) gear, especially small transmillers like the Heathkit DX-60 and the Ranger I/II.
I've never owner a Viking II, but I've heard good things about them.? I'm curious about the special "CDC" model.? Can a regular Viking II be easily upgraded to the CDC model?
Does anyone have a better recommendation for 160, 80 and 40M AM operation?? BTW, I already have a Collins R-388 (51J-3) that I'm thinking about using with whatever transmitter I get.
Any words of advice?
Mike Harmon, WB0LDJ
mharmon at att dot net
|
WTB: JOHNSON RANGER 2 meter
I’m looking for someone with a Ranger parts unit with a meter they are willing to sell. If you have one available, please contact me with the price with shipping to Texas (77429).
Thanks,
Tom N5AMA
|
MATCHBOX Interconnect: 6” to 12” Coaxial Cable Length
Figure 2 of the MATCHBOX manual shows a 6 inch to 12 inch length specification for interconnecting 50 ohm coaxial cables, one at the output of the transmitter and one at the input of the MATCHBOX. ?There is no coaxial cable length specification for interconnecting cables between accessories, like the No. 250-20 low pass filter or No. 250-37 directional coupler. ?Apparently, Johnson considered the length of these two particular cables critical. ?On page 1, section II (Installation), the manual states that overall length of interconnecting coaxial ?(transmission) line [TL] should be as short as practical because “input reactance varies more rapidly with [respect to] frequency as the length of the line increases.” ?So, it is clear to understand as the length of interconnecting coaxial TL increases with respect to the wavelength in use, any MATCHBOX input reactance present will vary increasingly quicker as the frequency is adjusted. ?The manual then states, “If a low pass filter and a TR switch are used,” these two length-specified interconnecting TL’s show in Figure 2 should be used.
Why are the lengths of these two TL’s particularly critical under the stated condition?
If a TR switch, either a No. 250-39 or some other like found in the ARRL Handbook, is not used, i.e. use of a transmitter or transceiver containing TR switching, would the 6” to 12” TL length requirement following the transmitter be relaxed? ?Under this condition and using a low pass filter such as the No. 250-20, can I assume the 6” to 12” TL length at the MATCHBOX input, at least, must be maintained, but the rule of shortest practical interconnecting TL could be applied for any other TL’s necessary?
Thank you.
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Looking for clean schematic for Viking Mobile Transmitter
I am having trouble using my copy of the VM transmitter schematic. ?I have a scanned copy of the manual and the schematic image from BAMA. ?I tried cleaning up my copy in Photoshop with minimal results.
Does anyone have a cleaner copy than what is in the scanned manual. ?I would appreciate hearing from you.
Thanks,
Bob, KN4HH?
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Re: Viking mobile transmitter gang tuning capacitor chain locked up
Hello group,? There is this new stuff I have seen advertised called "SUPERZILLA"? From the demonstrations I have seen, it would be perfect for this problem.
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Re: Viking mobile transmitter gang tuning capacitor chain locked up
Thanks everyone for the great suggestions. ?The cap can not be removed (Johnson built the sub chassis around the gang tuning cap assembly) so I put alcohol in a spray bottle and doused the entire assembly an then flushed with hot soapy water and rinsed. ?That did the trick. Many thanks again,
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Show quoted text
On Dec 15, 2023, at 10:49 AM, Bill Blodgett via groups.io <whb5k@...> wrote:
? Remove it and clean with brake cleaner aerosol purchased from an auto supply store. ?If available in your locale, buy the solvent type. ?
Also, I’ve learned that 3-in-1 is pretty much an old type oil which will gum up with time. ?Available at bicycle shops and firearms stores is a very low viscosity synthetic oil containing teflon which used in very small quantity will easily flow into shaft bearings. ?Look for Tri-Flow in a small, black, squeeze container.
73, Bill KJ5BNE ++++++++++++++++ Bill Blodgett Arlington, Texas On Dec 15, 2023, at 9:03?AM, Bob Watson via groups.io <kn4hhptc@...> wrote:
?
My Viking mobile TX adventure continues.? Ashley, your procedure worked perfectly.? However, Kroil was not available so I used PB Blaster.? I had no idea that the stuff conducted RF.? I cleaned the area around the Gang tuning capacitors.? However, there is residue on the plates.? I powered up the TX and went to Tune and got arc over on the middle cap.? I am guessing that the PB Blaster left residue from the over spray (I got heavy handed) on the capacitor plates which is causing the arcing.? The plates are very straight and no bends or contact.
Ashley, or anyone, can you suggest the best way to remove the PB Blaster residue from the capacitor plates.
Many thanks, Bob, KN4HH
On Tuesday, December 12, 2023 at 09:04:18 AM EST, Bob Watson via groups.io <kn4hhptc@...> wrote:
Ashley, thank you so much for that detailed procedure. Just what I needed.? I will follow your procedure and report back.
73, Bob, KN4HH
On Monday, December 11, 2023 at 08:26:40 PM EST, Ashley Hall via groups.io <ashley40@...> wrote:
Bob Hello ?? This is what WE do for frozin/very sticky rotating components such as variable capacitors: YMMV ?? A few drops of KROIL on each bearing surface that is accessible , ( shaft collars, etc). Let sit overnight ?? Flush with a very light machine oil ( 3 in one is ok), meanwhile applying a low rotational force to the frozen shaft...Our experience is, sooner or later, the shaft will begin to move.. Apply heat with heat gun ( we use the Weller heat gun because the heat temp is relatively low). ?? Rinse and repeat until shaft is free. Flush with clean lightweight machine oil.
?? Add periodic lubrication of rotating components to your " To Do"...List
Note: we spend a lot of time "un-freezing" rotational components in which the periodic maintenance has been neglected.?
?
Thank You
Kiss-Electronics
Ms Ashley Hall
183 N 5th PL.
Cornelius, Oregon
97113
?
?
W7DUZ
?
?
On Monday, December 11, 2023 at 04:02:57 PM PST, Bob Watson via groups.io <kn4hhptc@...> wrote:
Good day, all. ?My VM transmitter has been working well until today. ?I tried to adjust grid current using the Gang Tuning control. ?I turned the knob about half way and the control locked up. ?I could not turn the control in either direction. ?I loosened the shaft coupler between the front and middle tuning capacitor and the front capacitor turns freely. ?The middle tuning capacitor would not budge. ?I loosened the shaft coupler between the middle and rear capacitor and the rear capacitor moves freely. ?I am afraid to apply too much force to the middle capacitor shaft. ?Has anyone run into this problem and any recommendations on freeing up the capacitor. ?When the problem is solved, I will need to re-align the position of each tuning capacitor. ?As best I recall, all sections were at approximately the same location ( all fully meshed).
Thanks for any comments.
73, Bob, KN4HH?
|
Re: Viking mobile transmitter gang tuning capacitor chain locked up
Remove it and clean with brake cleaner aerosol purchased from an auto supply store. ?If available in your locale, buy the solvent type. ?
Also, I’ve learned that 3-in-1 is pretty much an old type oil which will gum up with time. ?Available at bicycle shops and firearms stores is a very low viscosity synthetic oil containing teflon which used in very small quantity will easily flow into shaft bearings. ?Look for Tri-Flow in a small, black, squeeze container.
73, Bill KJ5BNE ++++++++++++++++ Bill Blodgett Arlington, Texas
toggle quoted message
Show quoted text
On Dec 15, 2023, at 9:03?AM, Bob Watson via groups.io <kn4hhptc@...> wrote:
?
My Viking mobile TX adventure continues.? Ashley, your procedure worked perfectly.? However, Kroil was not available so I used PB Blaster.? I had no idea that the stuff conducted RF.? I cleaned the area around the Gang tuning capacitors.? However, there is residue on the plates.? I powered up the TX and went to Tune and got arc over on the middle cap.? I am guessing that the PB Blaster left residue from the over spray (I got heavy handed) on the capacitor plates which is causing the arcing.? The plates are very straight and no bends or contact.
Ashley, or anyone, can you suggest the best way to remove the PB Blaster residue from the capacitor plates.
Many thanks, Bob, KN4HH
On Tuesday, December 12, 2023 at 09:04:18 AM EST, Bob Watson via groups.io <kn4hhptc@...> wrote:
Ashley, thank you so much for that detailed procedure. Just what I needed.? I will follow your procedure and report back.
73, Bob, KN4HH
On Monday, December 11, 2023 at 08:26:40 PM EST, Ashley Hall via groups.io <ashley40@...> wrote:
Bob Hello ?? This is what WE do for frozin/very sticky rotating components such as variable capacitors: YMMV ?? A few drops of KROIL on each bearing surface that is accessible , ( shaft collars, etc). Let sit overnight ?? Flush with a very light machine oil ( 3 in one is ok), meanwhile applying a low rotational force to the frozen shaft...Our experience is, sooner or later, the shaft will begin to move.. Apply heat with heat gun ( we use the Weller heat gun because the heat temp is relatively low). ?? Rinse and repeat until shaft is free. Flush with clean lightweight machine oil.
?? Add periodic lubrication of rotating components to your " To Do"...List
Note: we spend a lot of time "un-freezing" rotational components in which the periodic maintenance has been neglected.?
?
Thank You
Kiss-Electronics
Ms Ashley Hall
183 N 5th PL.
Cornelius, Oregon
97113
?
?
W7DUZ
?
?
On Monday, December 11, 2023 at 04:02:57 PM PST, Bob Watson via groups.io <kn4hhptc@...> wrote:
Good day, all. ?My VM transmitter has been working well until today. ?I tried to adjust grid current using the Gang Tuning control. ?I turned the knob about half way and the control locked up. ?I could not turn the control in either direction. ?I loosened the shaft coupler between the front and middle tuning capacitor and the front capacitor turns freely. ?The middle tuning capacitor would not budge. ?I loosened the shaft coupler between the middle and rear capacitor and the rear capacitor moves freely. ?I am afraid to apply too much force to the middle capacitor shaft. ?Has anyone run into this problem and any recommendations on freeing up the capacitor. ?When the problem is solved, I will need to re-align the position of each tuning capacitor. ?As best I recall, all sections were at approximately the same location ( all fully meshed).
Thanks for any comments.
73, Bob, KN4HH?
|
Re: Viking mobile transmitter gang tuning capacitor chain locked up
Alcohol, 91% Isopropyl
Wash thoroughly. Blow dry.
73 Bill N4LG
toggle quoted message
Show quoted text
At 10:03 AM 12/15/2023, Bob Watson via groups.io wrote: My Viking mobile TX adventure continues. Ashley, your procedure worked perfectly. However, Kroil was not available so I used PB Blaster. I had no idea that the stuff conducted RF. I cleaned the area around the Gang tuning capacitors. However, there is residue on the plates. I powered up the TX and went to Tune and got arc over on the middle cap. I am guessing that the PB Blaster left residue from the over spray (I got heavy handed) on the capacitor plates which is causing the arcing. The plates are very straight and no bends or contact.
Ashley, or anyone, can you suggest the best way to remove the PB Blaster residue from the capacitor plates.
Many thanks,
Bob, KN4HH
On Tuesday, December 12, 2023 at 09:04:18 AM EST, Bob Watson via groups.io <kn4hhptc@...> wrote:
Ashley, thank you so much for that detailed procedure. Just what I needed. I will follow your procedure and report back.
73, Bob, KN4HH
On Monday, December 11, 2023 at 08:26:40 PM EST, Ashley Hall via groups.io <ashley40@...> wrote:
Bob Hello
This is what WE do for frozin/very sticky rotating components such as variable capacitors: YMMV
A few drops of KROIL on each bearing surface that is accessible , ( shaft collars, etc). Let sit overnight
Flush with a very light machine oil ( 3 in one is ok), meanwhile applying a low rotational force to the frozen shaft...Our experience is, sooner or later, the shaft will begin to move.. Apply heat with heat gun ( we use the Weller heat gun because the heat temp is relatively low).
Rinse and repeat until shaft is free. Flush with clean lightweight machine oil.
Add periodic lubrication of rotating components to your " To Do"...List
Note: we spend a lot of time "un-freezing" rotational components in which the periodic maintenance has been neglected.
Thank You
Kiss-Electronics
Ms Ashley Hall
183 N 5th PL.
Cornelius, Oregon
97113
W7DUZ
<>www.kiss-electronics.com
On Monday, December 11, 2023 at 04:02:57 PM PST, Bob Watson via groups.io <kn4hhptc@...> wrote:
Good day, all. My VM transmitter has been working well until today. I tried to adjust grid current using the Gang Tuning control. I turned the knob about half way and the control locked up. I could not turn the control in either direction. I loosened the shaft coupler between the front and middle tuning capacitor and the front capacitor turns freely. The middle tuning capacitor would not budge. I loosened the shaft coupler between the middle and rear capacitor and the rear capacitor moves freely. I am afraid to apply too much force to the middle capacitor shaft. Has anyone run into this problem and any recommendations on freeing up the capacitor. When the problem is solved, I will need to re-align the position of each tuning capacitor. As best I recall, all sections were at approximately the same location ( all fully meshed).
Thanks for any comments.
73, Bob, KN4HH
|
Re: Viking mobile transmitter gang tuning capacitor chain locked up
My Viking mobile TX adventure continues.? Ashley, your procedure worked perfectly.? However, Kroil was not available so I used PB Blaster.? I had no idea that the stuff conducted RF.? I cleaned the area around the Gang tuning capacitors.? However, there is residue on the plates.? I powered up the TX and went to Tune and got arc over on the middle cap.? I am guessing that the PB Blaster left residue from the over spray (I got heavy handed) on the capacitor plates which is causing the arcing.? The plates are very straight and no bends or contact.
Ashley, or anyone, can you suggest the best way to remove the PB Blaster residue from the capacitor plates.
Many thanks, Bob, KN4HH
On Tuesday, December 12, 2023 at 09:04:18 AM EST, Bob Watson via groups.io <kn4hhptc@...> wrote:
Ashley, thank you so much for that detailed procedure. Just what I needed.? I will follow your procedure and report back.
73, Bob, KN4HH
On Monday, December 11, 2023 at 08:26:40 PM EST, Ashley Hall via groups.io <ashley40@...> wrote:
Bob Hello ?? This is what WE do for frozin/very sticky rotating components such as variable capacitors: YMMV ?? A few drops of KROIL on each bearing surface that is accessible , ( shaft collars, etc). Let sit overnight ?? Flush with a very light machine oil ( 3 in one is ok), meanwhile applying a low rotational force to the frozen shaft...Our experience is, sooner or later, the shaft will begin to move.. Apply heat with heat gun ( we use the Weller heat gun because the heat temp is relatively low). ?? Rinse and repeat until shaft is free. Flush with clean lightweight machine oil.
?? Add periodic lubrication of rotating components to your " To Do"...List
Note: we spend a lot of time "un-freezing" rotational components in which the periodic maintenance has been neglected.?
?
Thank You
Kiss-Electronics
Ms Ashley Hall
183 N 5th PL.
Cornelius, Oregon
97113
?
?
W7DUZ
?
?
On Monday, December 11, 2023 at 04:02:57 PM PST, Bob Watson via groups.io <kn4hhptc@...> wrote:
Good day, all. ?My VM transmitter has been working well until today. ?I tried to adjust grid current using the Gang Tuning control. ?I turned the knob about half way and the control locked up. ?I could not turn the control in either direction. ?I loosened the shaft coupler between the front and middle tuning capacitor and the front capacitor turns freely. ?The middle tuning capacitor would not budge. ?I loosened the shaft coupler between the middle and rear capacitor and the rear capacitor moves freely. ?I am afraid to apply too much force to the middle capacitor shaft. ?Has anyone run into this problem and any recommendations on freeing up the capacitor. ?When the problem is solved, I will need to re-align the position of each tuning capacitor. ?As best I recall, all sections were at approximately the same location ( all fully meshed).
Thanks for any comments.
73, Bob, KN4HH?
|
Re: Viking mobile transmitter gang tuning capacitor chain locked up
Ashley, thank you so much for that detailed procedure. Just what I needed.? I will follow your procedure and report back.
73, Bob, KN4HH
On Monday, December 11, 2023 at 08:26:40 PM EST, Ashley Hall via groups.io <ashley40@...> wrote:
Bob Hello ?? This is what WE do for frozin/very sticky rotating components such as variable capacitors: YMMV ?? A few drops of KROIL on each bearing surface that is accessible , ( shaft collars, etc). Let sit overnight ?? Flush with a very light machine oil ( 3 in one is ok), meanwhile applying a low rotational force to the frozen shaft...Our experience is, sooner or later, the shaft will begin to move.. Apply heat with heat gun ( we use the Weller heat gun because the heat temp is relatively low). ?? Rinse and repeat until shaft is free. Flush with clean lightweight machine oil.
?? Add periodic lubrication of rotating components to your " To Do"...List
Note: we spend a lot of time "un-freezing" rotational components in which the periodic maintenance has been neglected.?
?
Thank You
Kiss-Electronics
Ms Ashley Hall
183 N 5th PL.
Cornelius, Oregon
97113
?
?
W7DUZ
?
?
On Monday, December 11, 2023 at 04:02:57 PM PST, Bob Watson via groups.io <kn4hhptc@...> wrote:
Good day, all. ?My VM transmitter has been working well until today. ?I tried to adjust grid current using the Gang Tuning control. ?I turned the knob about half way and the control locked up. ?I could not turn the control in either direction. ?I loosened the shaft coupler between the front and middle tuning capacitor and the front capacitor turns freely. ?The middle tuning capacitor would not budge. ?I loosened the shaft coupler between the middle and rear capacitor and the rear capacitor moves freely. ?I am afraid to apply too much force to the middle capacitor shaft. ?Has anyone run into this problem and any recommendations on freeing up the capacitor. ?When the problem is solved, I will need to re-align the position of each tuning capacitor. ?As best I recall, all sections were at approximately the same location ( all fully meshed).
Thanks for any comments.
73, Bob, KN4HH?
|
Re: Viking mobile transmitter gang tuning capacitor chain locked up
Bob Hello ?? This is what WE do for frozin/very sticky rotating components such as variable capacitors: YMMV ?? A few drops of KROIL on each bearing surface that is accessible , ( shaft collars, etc). Let sit overnight ?? Flush with a very light machine oil ( 3 in one is ok), meanwhile applying a low rotational force to the frozen shaft...Our experience is, sooner or later, the shaft will begin to move.. Apply heat with heat gun ( we use the Weller heat gun because the heat temp is relatively low). ?? Rinse and repeat until shaft is free. Flush with clean lightweight machine oil.
?? Add periodic lubrication of rotating components to your " To Do"...List
Note: we spend a lot of time "un-freezing" rotational components in which the periodic maintenance has been neglected.?
?
Thank You
Kiss-Electronics
Ms Ashley Hall
183 N 5th PL.
Cornelius, Oregon
97113
?
?
W7DUZ
?
?
On Monday, December 11, 2023 at 04:02:57 PM PST, Bob Watson via groups.io <kn4hhptc@...> wrote:
Good day, all. ?My VM transmitter has been working well until today. ?I tried to adjust grid current using the Gang Tuning control. ?I turned the knob about half way and the control locked up. ?I could not turn the control in either direction. ?I loosened the shaft coupler between the front and middle tuning capacitor and the front capacitor turns freely. ?The middle tuning capacitor would not budge. ?I loosened the shaft coupler between the middle and rear capacitor and the rear capacitor moves freely. ?I am afraid to apply too much force to the middle capacitor shaft. ?Has anyone run into this problem and any recommendations on freeing up the capacitor. ?When the problem is solved, I will need to re-align the position of each tuning capacitor. ?As best I recall, all sections were at approximately the same location ( all fully meshed).
Thanks for any comments.
73, Bob, KN4HH?
|
Viking mobile transmitter gang tuning capacitor chain locked up
Good day, all. ?My VM transmitter has been working well until today. ?I tried to adjust grid current using the Gang Tuning control. ?I turned the knob about half way and the control locked up. ?I could not turn the control in either direction. ?I loosened the shaft coupler between the front and middle tuning capacitor and the front capacitor turns freely. ?The middle tuning capacitor would not budge. ?I loosened the shaft coupler between the middle and rear capacitor and the rear capacitor moves freely. ?I am afraid to apply too much force to the middle capacitor shaft. ?Has anyone run into this problem and any recommendations on freeing up the capacitor. ?When the problem is solved, I will need to re-align the position of each tuning capacitor. ?As best I recall, all sections were at approximately the same location ( all fully meshed).
Thanks for any comments.
73, Bob, KN4HH?
|
Mike Langner
Bob Watson