I have 2 R4-C's and which behave in much the same way. I believe the PTO
generally is not exactly linear from one end of its range to the other.
Regards
JB
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Henry Foglesong
Sent: Tuesday, 16 July 2013 3:1
Ahha, re my previous comment. I see that you have removed the NB-4 and there
is no change. I withdraw my comment.
Best regards
JB
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Bill & Becky
Sent: Thursday, 12 July 2012 9:21 AM
To: drakelist@zerobeat.
Have you been able to remove the NB-4 and bypass it with the jumper plug as
yet? I have experienced this problem and I have found the NB-4 to be the
culprit. You may be embarking on a process to eliminate symptoms rather than
fixing the problem.
JB
From: drakelist-boun...@zerobeat.net [mailto:
What is a "Poser Supply" a new suit or free drinks? I know I know "Power
Supply".
JB
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of w4...@aol.com
Sent: Tuesday, 10 July 2012 12:50 PM
To: drakera...@yahoogroups.com; drakelist@zerobeat.net
Subject: [Dra
Is the NB-4 Noise Blanker installed? If so remove the NB from the R4-C and
install the jumper socket and see if the effect remains.
Chances are the NB is the issue and will need to be realigned and the NB
gain reset.
JB
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net
Whoops made a typo: should read 4644.999 Khz. crystal.
John
VK2IFT
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of John Brown
Sent: Tuesday, 5 June 2012 2:32 PM
To: Drake List
Subject: [Drakelist] Crystal
Folks, I am in the process of restoring
Folks, I am in the process of restoring an R-4C and I am having difficulty
getting the Carrier Oscillator stable. It seems to drift from about 400hz
below 4645khz up to 450Hz above and anywhere in between over time. It really
should stabilise quickly +/- 50Hz after turn on. The power supply to the
It's the same on both of my R-4C radios seems to be an unintended
feature.
JB
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Peter Ravn
Sent: Thursday, 5 April 2012 1:52 AM
To: Drakelist@zerobeat.net
Subject: [Drakelist] R4B AF GAIN
When the A
If I read your post correctly...No. The voltages ex the transformer are A/C
i.e. the output voltages/currents alternate across each output winding.
JB
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Larry Sack
Sent: Wednesday, 1 February 2012 5:13
Max, if you are inclined towards doing all of the R-4C Sherwood mods on your
receiver then I would say it would be well worthwhile. The complete mods
really puts the R4-C ahead of the pack. I have done 2 R4C's this way and
wouldn't hesitate to do them again.
In terms of individual mods, then the p
to its "as
built" functionality.
Best regards
JB
-Original Message-
From: Garey Barrell [mailto:k4...@mindspring.com]
Sent: Thursday, 29 December 2011 2:37 AM
To: John Brown
Cc: y...@aol.com; drakelist@zerobeat.net
Subject: Re: [Drakelist] strange relay setup for T4X
Possibly.
I guess there will not be any VOX capability if it is hard wired to the PTT.
JB
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of y...@aol.com
Sent: Wednesday, 28 December 2011 12:15 PM
To: drakelist@zerobeat.net
Subject: [Drakelist] strange relay setup
NahI think it will come up pretty well.
JB
-Original Message-
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Steve Wedge
Sent: Wednesday, 21 December 2011 11:46 PM
To: drakelist@zerobeat.net
Subject: [Drakelist] Nastiest Drake Gear
I'm going
Reducing the mains input probably wouldn't make any difference to tube life.
Regarding the bias setting, changing this would only shift the class of
operating the finals a tad from the design spec if any. Can't see much to be
gained from doing either. Why not just use the rig and enjoy it?
JB
Probably the "inj" level is higher from the T4X. Might need to investigate
the R4B mixers.
JB
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of J G
Sent: Thursday, 10 November 2011 9:29 AM
To: drakelist@zerobeat.net
Subject: [Drakelist] R-4B low sensitiv
I advertised for a T-4XC front panel on the Australian VKHam classified
website and immediately received an Email response from somebody supposedly
located at: 46 medomak mobile home park waldoboro,me 04572 offering either
the T-4XC or just the front panel, claiming he has tried to sell the
transmi
Probably need two antennas, two receivers and a multiplexer that can switch
between either receiver as the signal on each antenna fades in and out. It
was called "Diversity Reception" and was used for commercial RRTY (among
others uses)in order to maintain a constant signal feed to the RTTY
machine
I used the Irad 6Khz 1st IF. Works well.
JB
VK2IFT
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Paul Gerhardt
K3PG
http://www.wb4hfn.com/DRAKE/DrakeArticles/PTO/Drake_PTO.htm
http://www.wb4hfn.com/DRAKE/DrakeArticles/TechTips/PTO-Repair.htm
Paul,
You may have seen these tips which describe how to service the Drake PTO's
for the R-4 series. I am not familiar with the T4X VFO but I w
Gents, my thanks again to all who replied with advice regarding Rob. I
eventually made contact and it appears his business Email has a SPAM filter
that for some reasons rejects certain emails. mostly mine darn it.
Again many thanks and most appreciated.
Best regards to all
John
VK2IFT
still active.
Thanks & regards to all.
John Brown
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