[Premium-Rx] Stiff HF2050 Tuning : PTFE spray
G8JCF
g8jcf at g8jcfsdr.dyndns.org
Fri Oct 24 20:23:56 EDT 2014
Hi Chris
I had exactly the same problem, and I used PTFE spray to bring the tuning
control back to life. It's now 2 years on, and tuning remains smooth.
Peter (GM8JCF)
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Sent: 24 October 2014 18:53
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Today's Topics:
1. For Sale - Harris Radios, Reducing Shack Size (R Cramer)
2. Collins HF-2050 (Chris fuller)
3. Re: Collins HF-2050 (????? ???????)
4. Re: Collins HF-2050 (Tom)
5. Lubricants for electronics (watkins-johnson at terryo.org)
6. Re: Lubricants for electronics (Peter Gottlieb)
----------------------------------------------------------------------
Message: 1
Date: Thu, 23 Oct 2014 11:06:21 -0400
From: R Cramer <rwcfl at tampabay.rr.com>
To: premium-rx at mailman.qth.net
Subject: [Premium-Rx] For Sale - Harris Radios, Reducing Shack Size
Message-ID: <5449196D.8010003 at tampabay.rr.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have 1 set Harris R-590A & 1310A for sale.
1 set Harris R-590 & 1310 for sale.
Some Harris manuals for above. Contact me off-list. Will have pictures
early next week. Condition is 9+.
Will list manuals later today. Manuals will go with hardware.
I have other test equipment for sales which I will list later with pictures
e.g spectrum analyzers, Bird watt meter and Bird Power Analyst.
KY2E
KY2E at arrl.net
------------------------------
Message: 2
Date: Thu, 23 Oct 2014 20:12:41 -0500
From: Chris fuller <cfuller1 at gmail.com>
To: Premium-Rx at mailman.qth.net
Subject: [Premium-Rx] Collins HF-2050
Message-ID:
<CAN2Y6oznGh2aLdpW+yNFM70TLDn5ptO=AhhZEru4AnyNe8mycA at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
hi,
i have a collins hf-2050 that i bought awhile back but never really
used and just dug it out and started to use it again and noticed that the
tuning seems a bit stiff with the tuning knob.i was wondering of thos is a
common problem with the receiver such as the heat issues and if theres
anything i can do to rectify the problem.thanks to anyone that can provide
some answers.regards,
chris
------------------------------
Message: 3
Date: Fri, 24 Oct 2014 08:39:21 +0400
From: ????? ??????? <ua3mcj at mail.ru>
To: Chris fuller <cfuller1 at gmail.com>
Cc: Premium-Rx at mailman.qth.net
Subject: Re: [Premium-Rx] Collins HF-2050
Message-ID: <1414125561.277180080 at f423.i.mail.ru>
Content-Type: text/plain; charset=utf-8
Hello Chris,
At first find location of bearing in main tuning shaft, spray it with
Silicone Spray, rotate knob back and forth some few minutes it became ease
to move after that.
Then add? few drops of synthetic oil ( oil must NOT became dry with the
time).
Make some inspection, probably? few more bearings there, if so do the same
with them.
Also check for rust in the shafts sleeves there, if yes, use rust remover.
Remove dust, dirt with pressed air if compressor available. Remove all old,
dryed grease if used in and replace with fresh one...Then enjoy with smooth
tuning knob rotation...
B.R.
Boris
UA3MCJ
------------------------------
Message: 4
Date: Fri, 24 Oct 2014 09:06:20 -0700
From: Tom <n1bec at msn.com>
To: ????? ??????? <ua3mcj at mail.ru>, Chris fuller <cfuller1 at gmail.com>
Cc: "Premium-Rx at mailman.qth.net" <premium-rx at mailman.qth.net>
Subject: Re: [Premium-Rx] Collins HF-2050
Message-ID: <BLU179-W6807ED4090E9BB53D22324FE930 at phx.gbl>
Content-Type: text/plain; charset="koi8-r"
Hi Boris!
I would caution against using silicone spray in electronics: When I was in
industry, it was explained to me that silicones can break down into lesser
products, i.e. Silicon Dioxide (SiO2), or sand! It might be permissible to
use it on a shaft, but I would rather use something like Kroil, or another
penetrating oil to get a stuck part moving, then gradually work more light
oil into it to flush out rust, and afterwards use a drop or two of heavy
synthetic oil. Just my two cents worth...
73, Tom Herman, PhD., CETma. N1BEC/7
> From: ua3mcj at mail.ru
> To: cfuller1 at gmail.com
> Date: Fri, 24 Oct 2014 08:39:21 +0400
> CC: Premium-Rx at mailman.qth.net
> Subject: Re: [Premium-Rx] Collins HF-2050
>
> Hello Chris,
>
> At first find location of bearing in main tuning shaft, spray it with
Silicone Spray, rotate knob back and forth some few minutes it became ease
to move after that.
> Then add few drops of synthetic oil ( oil must NOT became dry with the
time).
>
> Make some inspection, probably few more bearings there, if so do the same
with them.
>
> Also check for rust in the shafts sleeves there, if yes, use rust remover.
> Remove dust, dirt with pressed air if compressor available. Remove all
old, dryed grease if used in and replace with fresh one...Then enjoy with
smooth tuning knob rotation...
>
> B.R.
> Boris
> UA3MCJ
>
>
> ______________________________________________________________
> Premium-Rx mailing list
> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
> Help Page: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Premium-Rx at mailman.qth.net Help Contact eMail:
> paul at 8zo.com Home Page: http://www.premium-rx.org/
------------------------------
Message: 5
Date: Fri, 24 Oct 2014 13:49:58 -0400
From: watkins-johnson at terryo.org
To: "Premium-Rx at mailman.qth.net" <premium-rx at mailman.qth.net>
Subject: [Premium-Rx] Lubricants for electronics
Message-ID:
<eba5543e6f524d78cf5a8dfa08afb93a.squirrel at emailmg.ipower.com>
Content-Type: text/plain;charset=iso-8859-1
My two preferred lubricants for electronics are Mobil 1 for places
requiring a thin lubricant that doesn't squeeze out and Phil Woods
Waterproof Grease (designed for bicycles) for places requiring a thicker
lubricant.
I started using Mobil 1after a tip from the R-390 users group. In my
experience with multiple premium receivers it doesn't creep onto
surrounding surfaces. I would use this on a tuning shaft any day.
I first used the Phil Woods Grease while rebuilding my second R-389 (I was
young, strong, and foolish once), which has the most leaden manual tuning
knob of any receiver I've ever owned. It didn't work miracles but the
tuning was much better than the first one I rebuilt.
Once of the stranger lubricant tricks I ever picked up was from a guitar
amp technician. If you have a noisy and irreplaceable potentiometer,
Lock-Ease graphite lock spray works great for filling in the noisy pits on
a degrading pot. The trick is to use it sparingly and infrequently. This
is a tip that can go bad in electronic circuits in a hurry, but sometimes
it's the only option.
Terry O'
http://watkins-Johnson.terryo.org
http://BlackRadios.terryo.org
> Hi Boris!
> I would caution against using silicone spray in electronics: When I was
> in industry, it was explained to me that silicones can break down into
> lesser products, i.e. Silicon Dioxide (SiO2), or sand! It might be
> permissible to use it on a shaft, but I would rather use something like
> Kroil, or another penetrating oil to get a stuck part moving, then
> gradually work more light oil into it to flush out rust, and afterwards
> use a drop or two of heavy synthetic oil. Just my two cents worth...
> 73, Tom Herman, PhD., CETma. N1BEC/7
>
>> From: ua3mcj at mail.ru
>> To: cfuller1 at gmail.com
>> Date: Fri, 24 Oct 2014 08:39:21 +0400
>> CC: Premium-Rx at mailman.qth.net
>> Subject: Re: [Premium-Rx] Collins HF-2050
>>
>> Hello Chris,
>>
>> At first find location of bearing in main tuning shaft, spray it with
>> Silicone Spray, rotate knob back and forth some few minutes it became
>> ease to move after that.
>> Then add few drops of synthetic oil ( oil must NOT became dry with the
>> time).
>>
>> Make some inspection, probably few more bearings there, if so do the
>> same with them.
>>
>> Also check for rust in the shafts sleeves there, if yes, use rust
>> remover.
>> Remove dust, dirt with pressed air if compressor available. Remove all
>> old, dryed grease if used in and replace with fresh one...Then enjoy
>> with smooth tuning knob rotation...
>>
>> B.R.
>> Boris
>> UA3MCJ
>>
>>
>> ______________________________________________________________
>> Premium-Rx mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
>> Help Page: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Premium-Rx at mailman.qth.net
>> Help Contact eMail: paul at 8zo.com
>> Home Page: http://www.premium-rx.org/
>
> ______________________________________________________________
> Premium-Rx mailing list
> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
> Help Page: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Premium-Rx at mailman.qth.net
> Help Contact eMail: paul at 8zo.com
> Home Page: http://www.premium-rx.org/
>
------------------------------
Message: 6
Date: Fri, 24 Oct 2014 13:52:27 -0400
From: Peter Gottlieb <hpnpilot at gmail.com>
To: premium-rx at mailman.qth.net
Subject: Re: [Premium-Rx] Lubricants for electronics
Message-ID: <544A91DB.3080301 at gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Interesting, thank you.
Peter
On 10/24/2014 1:49 PM, watkins-johnson at terryo.org wrote:
> My two preferred lubricants for electronics are Mobil 1 for places
> requiring a thin lubricant that doesn't squeeze out and Phil Woods
> Waterproof Grease (designed for bicycles) for places requiring a thicker
> lubricant.
>
> I started using Mobil 1after a tip from the R-390 users group. In my
> experience with multiple premium receivers it doesn't creep onto
> surrounding surfaces. I would use this on a tuning shaft any day.
>
> I first used the Phil Woods Grease while rebuilding my second R-389 (I was
> young, strong, and foolish once), which has the most leaden manual tuning
> knob of any receiver I've ever owned. It didn't work miracles but the
> tuning was much better than the first one I rebuilt.
>
> Once of the stranger lubricant tricks I ever picked up was from a guitar
> amp technician. If you have a noisy and irreplaceable potentiometer,
> Lock-Ease graphite lock spray works great for filling in the noisy pits on
> a degrading pot. The trick is to use it sparingly and infrequently. This
> is a tip that can go bad in electronic circuits in a hurry, but sometimes
> it's the only option.
>
> Terry O'
> http://watkins-Johnson.terryo.org
> http://BlackRadios.terryo.org
>
>
>> Hi Boris!
>> I would caution against using silicone spray in electronics: When I
was
>> in industry, it was explained to me that silicones can break down into
>> lesser products, i.e. Silicon Dioxide (SiO2), or sand! It might be
>> permissible to use it on a shaft, but I would rather use something like
>> Kroil, or another penetrating oil to get a stuck part moving, then
>> gradually work more light oil into it to flush out rust, and afterwards
>> use a drop or two of heavy synthetic oil. Just my two cents worth...
>> 73, Tom Herman, PhD., CETma. N1BEC/7
>>
>>> From: ua3mcj at mail.ru
>>> To: cfuller1 at gmail.com
>>> Date: Fri, 24 Oct 2014 08:39:21 +0400
>>> CC: Premium-Rx at mailman.qth.net
>>> Subject: Re: [Premium-Rx] Collins HF-2050
>>>
>>> Hello Chris,
>>>
>>> At first find location of bearing in main tuning shaft, spray it with
>>> Silicone Spray, rotate knob back and forth some few minutes it became
>>> ease to move after that.
>>> Then add few drops of synthetic oil ( oil must NOT became dry with the
>>> time).
>>>
>>> Make some inspection, probably few more bearings there, if so do the
>>> same with them.
>>>
>>> Also check for rust in the shafts sleeves there, if yes, use rust
>>> remover.
>>> Remove dust, dirt with pressed air if compressor available. Remove all
>>> old, dryed grease if used in and replace with fresh one...Then enjoy
>>> with smooth tuning knob rotation...
>>>
>>> B.R.
>>> Boris
>>> UA3MCJ
>>>
>>>
>>> ______________________________________________________________
>>> Premium-Rx mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
>>> Help Page: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Premium-Rx at mailman.qth.net
>>> Help Contact eMail: paul at 8zo.com
>>> Home Page: http://www.premium-rx.org/
>> ______________________________________________________________
>> Premium-Rx mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
>> Help Page: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Premium-Rx at mailman.qth.net
>> Help Contact eMail: paul at 8zo.com
>> Home Page: http://www.premium-rx.org/
>>
>
> ______________________________________________________________
> Premium-Rx mailing list
> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
> Help Page: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Premium-Rx at mailman.qth.net
> Help Contact eMail: paul at 8zo.com
> Home Page: http://www.premium-rx.org/
>
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