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Migration to Groups.Io
Hello to the Brain Trust! The following group has been set up and paid for...?/g/ham-amplifiers The Auto-Migration should happen any day and as soon as that is complete I'll kill this one. A couple of people have already figured it out and signed up. As a side note, they hold you hostage by making you pay for a yearly subscription ($220.00) to use their services, which I paid. While nobody will ever be required to pay to be a member here, any donation to help offset the cost would be appreciated. 100% of the money will be used exclusively for this group and once we reach $220 I'll let everyone know. I'm dino@... on PayPal and @DinoDarling on Venmo. Thanks!? Dino - KX6D |
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Cheap CB amps ar very useful for us HAMS
Clint, VE3CMQ
I have purchased several of the cheap solid state CB amplifiers.? These things will work anywhere from approximately 100KHz to 30+ MHz.? They are broad as a barn.? However, if you are going to use them on the HAM bands, you really should use a band pass filter.? Not using one will almost guarantee you will be transmitting on many bands at once!? I have modified several of these amps by installing a low pass filter board from a parts radios.? Most of the LPF's I have bought off EBAY will work, although some circuitry will need to be done to change the band of operation.? A simple switch on the front will work.? Maybe some simple frequency determination device would be able to automatically change the band?? I'll have to look into this down the road.? Radio control is pretty easy to do for ICOM radio's.? I am going to do this for my FT-817, once I get it working although that kind of gets away from QRP operation!
73, Clint, VE3CMQ |
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Re: yahoo groups going bye-bye.
开云体育Interesting…I got all the photos! ? Joe – W7RKN ? From: ham_amplifiers@... [mailto:ham_amplifiers@...] ? I got all my various groups downloaded. Contact me if you want the files. It got everything except the pictures. It only gave me the ones I uploaded. ? ? ? That is the link I used to get my data. ? kb3jqq@... I also have a gmail account that I don't check much. ? |
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Re: yahoo groups going bye-bye.
I got all my various groups downloaded. Contact me if you want the files. It got everything except the pictures. It only gave me the ones I uploaded. That is the link I used to get my data. kb3jqq@... I also have a gmail account that I don't check much.
On Wednesday, October 16, 2019, 11:34:43 AM EDT, jim.thom@... [ham_amplifiers] wrote:
scroll? to? very? top.? ?sad? news.? time? to? migrate to? groups.io? ?and? fast.? Jim? ? VE7RF? |
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Re: Jobs
开云体育Whoops. Sent to the wrong email addy. My apologies. Stuff happens when you get in from work @ 1AM. 73 Randy KZ4RV
On 11/18/2019 1:22 AM, Randy
randy@... [ham_amplifiers] wrote:
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Re: Question about HV transformer
GGLL
Thanks Lou. I did a search based on component ID's, and found it was a
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LPA-2 amplifier, from TMC. Two 8163 triodes. Unfortunately, the manual lacks the schematic, but the power supply is quite similar to LPA-1KC model (TMC also). Many thanks Regards Guillermo - LU5WE. El 18/11/19 a las 18:31, Gudguyham@... [ham_amplifiers] escribió:
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Re: Question about HV transformer [1 Attachment]
Sounds to me you would get around 3300 volts DC after a doubler rectifier. ?The .3A is probably a CCS rating so at ICAS that’s probably good for .6 amp. ?In an amplifier running two 3-400 tubes that would be an input power of about 1980 watts and probably 1100-1200 SSB would be my guess. ?Lou
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On?Monday, November 18, 2019,?GGLL guiye8@... [ham_amplifiers]??wrote:
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Question about HV transformer
GGLL
GA, I took out the HV transformer (from an old commercial PA, burnt
beyond practical repair, which I guess was for twin triodes 3-400z style, at least based in the sockets used and the filament transformer which is a 10 VAC CT, 15A one). This HV transformer has two primaries (115 VAC each, 50-60 Hz), and one secondary which states 1200 VAC, 0.3 A DC Doubler How should I estimate the transformer ratings, in terms of power capabilities?, I don't understand the meaning of that stated current value. TIA Regards Guillermo - LU5WE. |
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Re: Jobs
All good mate.
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Charge 25 grand. Send 20 to me and keep 5 for your troubles. 73, Alek. VK6APK On 18/11/2019 2:22 PM, Randy randy@... [ham_amplifiers] wrote:
Colby is going to complete the Doorn DIR reinspection report. --
From sunny Binningup Family Businesses: SP Electrical. www.spelectrical.net.au The Velvet Fox. Smart Design Electrical. Perth Interiors. |
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Re: Jobs
Sorry, I don’t recognize you. ?Perhaps Mis-sent. 73 DAVE, WT8R?
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On?Monday, November 18, 2019,?Joe w7rkn.7@... [ham_amplifiers]??wrote:
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Re: Jobs
????????????????
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-----Original Message-----
From: ham_amplifiers@... [mailto:ham_amplifiers@...] Sent: Sunday, November 17, 2019 10:23 PM To: ham_amplifiers@... Subject: [ham_amplifiers] Jobs Colby is going to complete the Doorn DIR reinspection report. I need a form to complete the Cherry DIR. Do you want me to do it before my Monday jobs? PDQ probably will require another trip (maybe not). No water was on the reportedly wet tiles in the hall near the closet and bathrooms, but some water does show up there when I wetted the kitchen walls. The mgr. that was there is the main one for that restaurant and I instructed him to tell his other managers to note when/if the water shows up-- some caulking was recently done in the kitchen, which may have solved some/most/all of the problem. I will call Mike to discuss. Let me know whether/how much to charge at this point. RV ------------------------------------ Posted by: Randy <randy@...> ------------------------------------ ------------------------------------ Yahoo Groups Links |
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Jobs
Colby is going to complete the Doorn DIR reinspection report.
I need a form to complete the Cherry DIR. Do you want me to do it before my Monday jobs? PDQ probably will require another trip (maybe not). No water was on the reportedly wet tiles in the hall near the closet and bathrooms, but some water does show up there when I wetted the kitchen walls. The mgr. that was there is the main one for that restaurant and I instructed him to tell his other managers to note when/if the water shows up-- some caulking was recently done in the kitchen, which may have solved some/most/all of the problem. I will call Mike to discuss. Let me know whether/how much to charge at this point. RV |
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Re: where is Dino Darling these days ??
开云体育I misled you…only an owner/moderator can do this.? In any case, the following clip is from an email sent to me by Yahoo.? You will need to click on the blue “This link” about ? of the way through the document.? An FYI, it will download ***ALL** the groups that are owned or moderated by you. ? Sorry this took so long to reply….I have been in and out of the hospital.? (Non life threatening issues!? WHEW!) ? Quote:
? End QUOTE: ? Joe – W7RKN ? ? From: ham_amplifiers@... [mailto:ham_amplifiers@...] ? Joe, I looked to see how to do this but don't see how. Hints? Thanks, Bob? WE6C/4 ? On Monday, November 11, 2019, 06:52:49 PM EST, Dino Darling dino@... [ham_amplifiers] wrote: |
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plate current question
what would cause an amplifer to draw a small amount of plate current for a few seconds after you unkey the amp. I noticed today that my alpha 77dx was drawing about 100ma of plate current for a few seconds after i unkeyed the amp. i had been running it hard for about 10 min. after i let the amp cool for awhile it no longer drew plate current for that few seconds after i unkeyed. Seems to do it when the amps been transmitting for a long time.? Also it only did it in the SSB position. when i put the amp in CW the problem when away. Tim |
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Re: where is Dino Darling these days ??
Bob Naylor
Joe, I looked to see how to do this but don't see how. Hints? Thanks, Bob? WE6C/4
On Monday, November 11, 2019, 06:52:49 PM EST, Dino Darling dino@... [ham_amplifiers] wrote:
?
I'm on it!
Sent from my Verizon, Samsung Galaxy smartphone
Get
From: ham_amplifiers@... on behalf of Joe w7rkn.7@... [ham_amplifiers]
Sent: Saturday, November 9, 2019 1:42:47 PM To: ham_amplifiers@... Subject: RE: [ham_amplifiers] where is Dino Darling these days ?? ?
?
I ‘believe’, I have all the data files from here, saved.? Yahoo gave everyone the ability to save the data files to all the groups they belong to, and this one, was in the **massive** zip file that was created by Yahoo for all my groups. ? Everyone here can do the same thing…..You do ***NOT*** need to be an owner/moderator to do this. ? Joe – W7RKN ? From: ham_amplifiers@... [mailto:ham_amplifiers@...]
Dino,? where? are? you? these? days ??? ?All? the? files +? pix? will? be? lost on? Dec? 14 !? This? amp? group needs to? move? to? groups.IO.......? and? fast.? Jim? ?VE7RF??
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Re: where is Dino Darling these days ??
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From: ham_amplifiers@... on behalf of Joe w7rkn.7@... [ham_amplifiers]
Sent: Saturday, November 9, 2019 1:42:47 PM To: ham_amplifiers@... Subject: RE: [ham_amplifiers] where is Dino Darling these days ?? ?
?
I ‘believe’, I have all the data files from here, saved.? Yahoo gave everyone the ability to save the data files to all the groups they belong to, and this one, was in the **massive** zip file that was created by Yahoo for all my groups. ? Everyone here can do the same thing…..You do ***NOT*** need to be an owner/moderator to do this. ? Joe – W7RKN ? From: ham_amplifiers@... [mailto:ham_amplifiers@...]
Dino,? where? are? you? these? days ??? ?All? the? files +? pix? will? be? lost on? Dec? 14 !? This? amp? group needs to? move? to? groups.IO......? and? fast.? Jim? ?VE7RF??
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Re: where is Dino Darling these days ??
开云体育I ‘believe’, I have all the data files from here, saved.? Yahoo gave everyone the ability to save the data files to all the groups they belong to, and this one, was in the **massive** zip file that was created by Yahoo for all my groups. ? Everyone here can do the same thing…..You do ***NOT*** need to be an owner/moderator to do this. ? Joe – W7RKN ? From: ham_amplifiers@... [mailto:ham_amplifiers@...] Dino,? where? are? you? these? days ??? ?All? the? files +? pix? will? be? lost on? Dec? 14 !? This? amp? group needs to? move? to? groups.IO......? and? fast.? Jim? ?VE7RF?? |
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Re: Non metallic paint for plywood ?
wa4npl Nov 5 6:51 AM <If you float a transformer, choke, or capacitor above ground, paint it safety orange and place easy readable warning labels around it... or build a shorting bar to take the frame to ground when a panel is opened. Don W4DNR ##? Points? well? taken.? Jim VE7RF |
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