Re: [drakelist] Tr-4 problems

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Matt -
Does your TR-4 have separate USB and LSB filters or does it have the 
"soupcan" style filter?

73, Garey - K4OAH
Atlanta
Drake C-Line Service Manual


[EMAIL PROTECTED] wrote:
<[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Hi all,
I picked up a TR-4 at a ham flea market for really short money. I was thinking 
of just keeping it for parts but it is all there physically and does work 
somewhat so I have decided to try to refurbish it. I have three problems with 
it. Two I assume are related and one that is separate. the first two are loss 
of receive sensitivity on all bands I can receive strong signals fine but there 
seems to be no band noise and of course weak signals are not there. When I say 
strong I mean s 10 or above on my other TR-4.
The second is the s meter is not working with respect to not being able to zero 
it and it will not indicate a received signal. With the meter zero control I 
was able to get the meter which seems to be working it?s self to between s 3 to 
s 5.
The third problem is that in SSB to get proper modulation I have to run the 
mike gain up about ? of the way using my Sure 444 D mike that works just fine 
on my other TR-4.
 

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Re: [drakelist] Tr-4 problems

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterence to the drakelist gang
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Ron -
We used "Pink Pearl" erasers, both wedge and draftsman's (you remember 
those, don't you?) electric erasers, primarily to remove the gold 
plating from solder pads on PC boards, at NASA back in the 60's.  The 
boards were cleaned with Freon TF (you remember that too, right?) 
afterwards before soldering.

I would never use an "ink" eraser, the ones with abrasive material 
included, on electronics.  Particularly on card edge connector pads.  I 
have seen cards with tin or gold plating removed down to bare copper 
with those things!

73, Garey - K4OAH
Atlanta
Drake C-Line Service Manual


Ron Wagner wrote:
Ron Wagner <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Is using an eraser to clean anything a good idea?  I though that most 
erasers has a sulfur in it and caused more corrosion?  Can someone set 
me straight on this?
73,
Ron


Visit my astronomy home page.   http://www.dma.org/~wagner
Amateur Radio Station: WD8SBB - Ron  and  KB8NRP - Joann


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[drakelist] TR-7 for sale

[Mike Rowlands]

"Mike Rowlands" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
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Hi Drakesters,

I'd like to sell my late serial Drake TR-7 Transceiver with PS-7 Power
Supply together with its MS-7 Speaker and RV-7 Remote VFO as a package.
All items are in very good to excellent condition with recent non-sticky
cases.  The TR-7 comes with SSB, CW and AM filters, noise blanker,
front-end static protection, original service manual and a W7AVK
extender board kit.  It is in daily use and has received a John Kriner
check-out.  US$850 for the package, exclusive of shipping costs.

Mike  VA3MR


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Re: [drakelist] Comments on Winlink

[Al Parker]

"Al Parker" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
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HI Thom,
Sure, you can use mine, I sent them out, w/cc to you, abt an hr & half
ago.
I'm a boater, and support the MM net on 14.300, but am against
Winlink's QRM.
73,
Al, W8UT
New Bern, NC
BoatAnchors appreciated here
http://www.thecompendium.net/radio/
http://www.hammarlund.info

- Original Message - 
From: "Thom R. Lacosta" <[EMAIL PROTECTED]>
To: "drake mailing list" 
Sent: Monday, April 04, 2005 11:27 AM
Subject: [drakelist] Comments on Winlink


>
> "Thom R. Lacosta" <[EMAIL PROTECTED]> made an utterence to the drakelist
gang
> --
> If you do comment ref winlink and give me permission, I will post the
comments
> on the Zerobeat.net web site.
>
> Time is short, and I won;t be able to work on it til this eveningbut
your
> comments ARE important.
>
> If you run into other folksthey can view the information at
> www.zerobeat.net
>
> Thom
>
> www.baltimorehon.com/Home of the Baltimore Lexicon
> www.tlchost.net/ Web Hosting as low as 3.49/month
> --
> On Behalf of "Thom R. Lacosta" <[EMAIL PROTECTED]>
> Submissions:drakelist@www.zerobeat.net
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in body
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> --
>


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[drakelist] TR7/7A Items For Sale

[Stuart Mount]

[EMAIL PROTECTED] (Stuart Mount) made an utterence to the drakelist gang
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I have the following items for sale,shipping will be additional:
1. Digital display board$75.00
2. TR relay...$20.00
3. VFO assembly.$50.00
4. VCO board...$50.00
5. Complete PA/Heat Sink Assembly.$100.00
6. 500 Hertz cw filter.$65.00
7. 2.3 khz ssb filter$50.00
8. Front S meter assembly$35.00
9. Service Manual..$65.00

All of these items are for the Drake TR7/7A transceiver,thank
you.W2AO

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Re: [drakelist] Tr-4 problems

[Ron Wagner]

Ron Wagner <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Is using an eraser to clean anything a good idea?  I though that most 
erasers has a sulfur in it and caused more corrosion?  Can someone set me 
straight on this?
73,
Ron


Visit my astronomy home page.   http://www.dma.org/~wagner
Amateur Radio Station: WD8SBB - Ron  and  KB8NRP - Joann

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[drakelist] Comments on Winlink

[Thom R. Lacosta]

"Thom R. Lacosta" <[EMAIL PROTECTED]> made an utterence to the drakelist 
gang
--
If you do comment ref winlink and give me permission, I will post the comments
on the Zerobeat.net web site.
Time is short, and I won;t be able to work on it til this eveningbut your 
comments ARE important.

If you run into other folksthey can view the information at
www.zerobeat.net
Thom
www.baltimorehon.com/Home of the Baltimore Lexicon
www.tlchost.net/ Web Hosting as low as 3.49/month
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Re: [drakelist] (OT) Latest Band Grab Plan

[Don and Diana Cunningham]

"Don and Diana Cunningham" <[EMAIL PROTECTED]> made an utterence to the 
drakelist gang
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I sent my .02 worth, Tom.  Thanks for the heads up!!
Don, WB5HAK
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[drakelist] (OT) Latest Band Grab Plan

[Thom R. Lacosta]

"Thom R. Lacosta" <[EMAIL PROTECTED]> made an utterence to the drakelist 
gang
--
I'm taking the liberty to post the information below because it involves each
one of us that use amateur frequencies.
Please read it carefully, and if you feel the points made are valid, then 
contact the ARRL HQ and your Division Director.  Even if you are NOT a member
of ARRL your comments are important.

Winlink wants YOUR frequencies!
Not satisfied with dominating the 3.8% of the HF ham frequencies set aside by 
the FCC for wideband unattended operations, Winlink, for the sole benefit of
their  less-than-1% of the US hams, is now pressuring the ARRL to take away
frequencies used for contesting, Dxing,ragchewing, experimentation, and
award-chasing, and make those additional frequencies available for Winlink
to dominate with their unattended email robots.

If you have ever had your CW or PSK31 QSO trampled by a Pactor station when
you were already on the frequency, or you do not want this to happen to you in 
the future, then youMUST email Dave Sumner, CEO, at [EMAIL PROTECTED] and
tell him the following without delay!

1. That you do NOT agree to give up any frequencies outside of the present FCC 
sub-bands for automatically controlled digital station operations,
INCLUDING the Executive Committee's intention to increase the space on the
30 meter FCC sub-bands, where unattended wideband digital operations are already 
allowed (and already dominated by Winlink), by 33%, because 30m is already a 
SMALL band and a band that has to be SHARED with commercial services.

2. That you DO NOT BELIEVE that unattended or so-called "semi-automatic" Winlink 
operations will not dominate any frequencies they publish, SINCE THEY DO ALREADY,
even though they claim to have "activity detection" already in the modems they 
use. That the claim of "activity detection" is a false promise in order to get 
the ARRL to petition the FCC to take away spectrum from everyone else for the 
increased convenience of the 5100 Winlink users, who mainly use ham radio as a
way to get remote email access to the Internet, and not for communications.

3. That the HISTORICALLY HIGH LEVEL OF INTERFERENCE BY PACTOR STATIONS to 
everyone else has demonstrated time and time again that even the
operator-controlled Winlink  Pactor stations don't care if a frequency is busy 
(because they can easily take it away), in their passion to get their email
from the Internet, so they MUST NOT BE ALLOWED to mix with hams trying
to COMMUNICATE WITH EACH OTHER!

4. That you do NOT agree that more space should be allocated to unattended 
phone-width DIGITAL operations because the phone bands are already overcrowded with
hams trying to talk to each other, and any re-allocation to make more room for 
phone-width signals should only be used for analog or digital voice that will benefit
99% of the hams instead of the less-than-1% that Winlink represents.

5. That there is no spectrum that can be taken away from where CW and 
person-to-person digital communications like RTTY, PSK31 and MFSK16 are used for ragchewing, 
Dxing, and contesting.

6. That ham radio is a HOBBY, not a quasi-commercial email "service" as Winlink 
provides,
and that ham radio, from the very beginning, has always been mainly about hams
communicating with other hams, and not about being used for unattended email 
gateways to
the Internet, mostly for a few sailors, because the FCC Maritime Radio  
Frequencies were set
aside for that purpose and are underused.
7. That all unattended wideband digital operations, of any type, MUST be 
confined to the current sub-bands for automatically controlled digital stations, and not allowed 
to use any frequency they wish just in order to avoid having to wait a short time for a clear
frequency in the sub-bands.

Here is the Winlink bulletin that was posted on their servers:

VERY IMPORTANT Update, March 23, 2005
HELP US KEEP AND ENHANCE WINLINK 2000. PLEASE RESPOND BY APRIL 6!
All,
Recently, we asked that all Winlink users write to the ARRL to save our
Winlink wideband (Pactor 3) operations on the 30 meter band. The ARRL had
just recommended the deletion of such operations on that band for all US
licensed Amateurs. Our users did respond to the request for opinions, and as
a result, the ARRL Executive Committee has now rescinded their original
recommendation to delete wideband digital operations on 30 meters.
Once again, we are asking you to write to David Sumner at
[EMAIL PROTECTED], and request the following:
1. That bandwidth space be expanded for digital modes above 500 Hz, and that
semi-automatic operations be allowed outside the current very restricted
sub-bands. Semi-automatic operations are always initiated by human beings
who are capable of listening before they transmit.
2. That because sophisticated signal detection is planned for the Winlink
2000 semi-automatic operations, the unattended

[drakelist] Tr-4 problems

[k1mcn-]

<[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Hi all,

I picked up a TR-4 at a ham flea market for really short money. I was thinking 
of just keeping it for parts but it is all there physically and does work 
somewhat so I have decided to try to refurbish it. I have three problems with 
it. Two I assume are related and one that is separate. the first two are loss 
of receive sensitivity on all bands I can receive strong signals fine but there 
seems to be no band noise and of course weak signals are not there. When I say 
strong I mean s 10 or above on my other TR-4.
The second is the s meter is not working with respect to not being able to zero 
it and it will not indicate a received signal. With the meter zero control I 
was able to get the meter which seems to be working it?s self to between s 3 to 
s 5.
The third problem is that in SSB to get proper modulation I have to run the 
mike gain up about ? of the way using my Sure 444 D mike that works just fine 
on my other TR-4.

I have cleaned all of switches and pots very carefully spending most of a day 
on them burnishing them with a soft eraser and then with De Oxit and after that 
some Caig Labs lubricant. I also have pulled all of the tubes and used De Oxit 
on the pins and checked all of the tubes with a Hickock 800 tube tester. I 
replaced any tubes that were bad or questionable. 
I also checked the fuse lamp in final cage cleaning its socket and pins. I 
cleaned and tested the receive switch on the chassis as well. 
I powered the Tr-4 up with a AC-4 supply that has been refurbished and works 
well on one of my other Drake TR-4c?s.
I have not made any meter checks on the tubes to check biases. Yet but I am 
thinking that should be my next step.
Is there anything that I am missing here?

Transmit CW was low but now it?s putting about 250 watts out into my dummy load 
on 20 meters so I would really like to get this TR-4 up and running. It?s not a 
collector quality but for a on air rig it would be nice to refurbish it.

Thanks for any help,

Matt
K1MCN

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