TR7A-Serial Number 12042
PS7-Serial Number 10648
Drake Desk Microphone
Excellent condition.
Original Manuals.
Original Drake Packing Cartons.
$950.00 plus shipping from Toronto, Canada
VE-3-FTO
Ed
___
Drakeli
On Sun, 9 Jan 2011 05:19:13 +0200, geoffrey mendelson wrote:
>Thanks for correcting me. The TR-7 I owned had no filter, nor the mod,
>so I was uable to receive
>AM with it. I had never tried to transmit in AM, since I had no way of
>receiving any response.
I'm not sure why you couldn't recei
On Jan 9, 2011, at 12:00 AM, Joe Pyles wrote:
You do not need the AM filter to transmit AM. It does not matter
what mode you transmit in, on a TR7 it always uses the 2.3khz
sideband filter.
When you transmit AM, you transmit carrier plus upper sideband (A3-
H).
Thanks for correcting me
Demis,
Check for +10 on pin 36 of the PBT/Reference board when the TR-7 is keyed in
AM mode. There then will be about 0.5 volt ppk of 5.645 mhz RF diode switched
and present on pin 30. This RF is then feed to the 2nd IF/Audio board on pin
11.
73, Gary
___
The TR-7 always transmits through the stock 2.3 khz SSB filter regardless of
mode. In AM only the USB and carrier are transmitted.
73, Gary
___
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That's correct. Since AM transmit is simply SSB with carrier, and Demis' radio
works in SSB, the problem must be somewhere in the mode switching. Possibly the
mode switch itself. But first, it would be a good idea to check for
dirty/oxidized Molex connectors between the parent board and each of the
You do not need the AM filter to transmit AM. It does not matter what
mode you transmit in, on a TR7 it always uses the 2.3khz sideband filter.
When you transmit AM, you transmit carrier plus upper sideband (A3-H).
73 Joe KC9LAD
At 03:49 PM 1/8/2011, you wrote:
On Jan 8, 2011, at 10:38 PM, D
On Jan 8, 2011, at 10:38 PM, Demis Bertoni wrote:
Hi All,
I have buyed on ebay a TR7A in good condition, but not functioning
the AM modulation. LSB and USB no problem. I have replaced the
transmit exciter board without result...
Do you have a solution to this problem?
I have not owned a
Hi All,
I have buyed on ebay a TR7A in good condition, but not functioning the AM
modulation. LSB and USB no problem. I have replaced the transmit exciter
board without result...
Do you have a solution to this problem?
Many thanks for possible help.
My best 73's
--
IZ4ORS - Demis Bertoni
Via Re
Demis,
Great to hear! I always love to hear that another Drake is saved and back
ready for some operation.
73,
Ron WD8SBB
--- On Sun, 11/28/10, Demis Bertoni wrote:
From: Demis Bertoni
Subject: [Drakelist] TR7A band change problem.
To: drakelist@zerobeat.net
Date: Sunday, November 28, 2010
Problem solved!
The problem was the chip U9002 on DR7 board.
Many thanks to Ernie W8EH, Ron WD8SBB and Garey K4OAH.
My best 73's to all.
IZ4ORS - Demis
--
IZ4ORS - Demis Bertoni
Via Rebecchi, 13 - 41015 Nonantola
(Modena) - Italy
___
Drakelist mailing
I recently repaired this exact problem on a TR-7 that I have here.
When I changed bands with the band switch, it would stay on the previous
band. If I switched the AUX switch to 1 and back, it would change to the
band selected by the band switch. I did not have an AUX-7 installed.
My problem
PLL/VCO chain. Then when the AUX switch comes back to
the normal position it issues the store.
Demis, do you have an AUX-7 board installed in your radio? That might make a
difference.
73,
Ron WD8SBB
--- On Fri, 11/5/10, Garey Barrell wrote:
> From: Garey Barrell
> Subject: Re: [Dra
Demis -
I'm not sure I understand what you are asking.
The TR-7(A) should cover 1.5 to 30 MHz continuous with the AUX PROGRAM
switch in the NORM position.
Selecting the desired frequency range with the BAND switch and then
either continuously tuning with the MAIN TUNING knob -OR- moving UP o
Hi all,
I've buyed a second hand TR7A transceiver with a small problem:
When I change the BAND I can move the AUX PROGRAM selector in position 1
and after in NORMAL for the appropriate band change.
Please help me.
Thank you in advance.
My best 73's
IZ4ORS, Demis
___
wd9...@hotmail.com writes:
Turned on my TR7A last night and the display was blank except for the
decimal point. Any ideas or suggestions would be appreciated Jude WD9FUM
Have had it happen..In my case cannot remember whether it was a loose P1 or
P2 connector going to the DR7 board.
Check the switch on the back of the radio marked CNTR is in the NORM position.
At 01:32 PM 5/15/2010, you wrote:
Turned on my TR7A last night and the display was blank except for
the decimal point. Any ideas or suggestions would be appreciated -
Thanx es 73!
Jude WD9FUM
___
Turned on my TR7A last night and the display was blank except for the decimal
point. Any ideas or suggestions would be appreciated - Thanx es 73!
Jude WD9FUM
_
Hotmail is redefining bus
Hi Folks,
Well, being a B/C Line man, I've decided to sell my TR7A. Asking price is
$1250 This is a "real" TR7A with s/n of 11,611. It is in good condition with
no known issues. It is nowhere near mint, but really looks nicer than the
pictures convey. It develops full power and receiver wo
On Thu, 26 Feb 2009 17:45:53 -0500, rich ferguson wrote:
>I have been working on tr7a., the problem is when the radio is first turned on
>and you key microphone the tr relay will not engage. After the radio has been
>turned on for 30 minutes the probelm goes away and the microphone will key
>
I have been working on tr7a., the problem is when the radio is first turned on
and you key microphone the tr relay will not engage. After the radio has been
turned on for 30 minutes the probelm goes away and the microphone will key
the radio. I have replaced the transistors on exciter board. r
/ WB4HFN
_
From: Ron Baker [mailto:wb4...@comcast.net]
Sent: Thursday, January 22, 2009 6:26 PM
To: 'drakelist@zerobeat.net'
Subject: RE: [Drakelist] TR7A on Ebay
The Drake production change from the TR7 to the TR7A
happened somewhere between serial numbers 11,500 and 11,8
Hello,
An important question is being overlooked,
the most important question regarding any
item Radio-Mart is selling:
Does this TR-7 even work? (Or work right?).
73, Bruce WA8TNC
ted wrote:
Hi Guys
You have to remember Radio-Mart is out to screw anyone he can ... So
asking
In the early eighties a friend of mine purchased a TR7A as soon as
they became available. When he passed away 5 years ago it was offered
to me by his estate, and I bought it.
The serial no. is 11,299. I have a second TR7A and the serial No. is
11,558. Both radios have the TX stamped over the rca
nastrin...@btinternet.com>
*To:* David & Chris Drake <mailto:dra...@psci.net> ;
drakelist@zerobeat.net <mailto:drakelist@zerobeat.net>
*Sent:* Thursday, January 22, 2009 4:10 PM
*Subject:* RE: [Drakelist] TR7A on Ebay
If the definition of a genuine TR7A i
The Drake production change from the TR7 to the TR7A
happened somewhere between serial numbers 11,500 and 11,800.
The "A" version was just a upgrade of the then produced TR7
with a couple of additions and external differences. Those
external differences being the front panel top section with
mode
- Original Message -
From: John Stringer
To: David & Chris Drake ; drakelist@zerobeat.net
Sent: Thursday, January 22, 2009 4:10 PM
Subject: RE: [Drakelist] TR7A on Ebay
If the definition of a genuine TR7A is one that was produced in Miamisburg I
believe that the followi
9 16:25
To: drakelist@zerobeat.net
Subject: [Drakelist] TR7A on Ebay
HI all,
I got hi rez picks from Radio Mart. I looked them over good. Here's my
opinion.
1. A EXTRA nice looking radio, looks little used with original gray case.
2. It does have the split rear panel, and
HI all,
I got hi rez picks from Radio Mart. I looked them over good. Here's my
opinion.
1. A EXTRA nice looking radio, looks little used with original gray case.
2. It does have the split rear panel, and the sn is 515x...can't confirm the
last digit.
3. TR7A face plate, that looks origin
Hello all,
First of ll, I would like to be clear that I nothing to do with the
TR7A auction. I live in Hollland and have never dealt with Radiomart.
This question of 'real' or 'fake' TR7A's has been somewhat skewed in
my opinion...
I have a TR7, which was officially made into a TR7A by an official
On Mon, 1 Dec 2008 16:30:23 -0600, [EMAIL PROTECTED] wrote:
>I've got a TR7A that works good on SSB, but AM transmit is problematic. I
>have to keep changing the carrier level control to get it to work. I've
>cleaned the control and aligned the radio, even changed a couple of caps
>to get the 40mh
I've got a TR7A that works good on SSB, but AM transmit is problematic. I
have to keep changing the carrier level control to get it to work. I've
cleaned the control and aligned the radio, even changed a couple of caps
to get the 40mhz oscillator and BFO both "dead on". It also acts
different from
due effort! Thank you.
John GI3KDR.
-Original Message-
From: Garey Barrell [mailto:[EMAIL PROTECTED]
Sent: 09 August 2008 21:19
To: John Stringer
Cc: drakelist@zerobeat.net
Subject: Re: [Drakelist] TR7A Knobs
John -
The DO just pull off. No hidden tricks. I use a couple of thicknesses
of
I have tried to pull off the Aux7 and Mode knobs without success! Any
suggestions? John GI3KDR
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2008 18:21
To: Drakelist
Subject: Re: [Drakelist] TR7A 12v Switching
John -
Normally, the TR-7 switches both the AC supply to the PS-7 Power Supply
- AND - the +12VDC to all of the transceiver with the exception of the
PA stage. This was done to allow the transceiver to be used on either
AC or DC
John -
Normally, the TR-7 switches both the AC supply to the PS-7 Power Supply
- AND - the +12VDC to all of the transceiver with the exception of the
PA stage. This was done to allow the transceiver to be used on either
AC or DC if mobile use was desired.
So if the external 12 VDC supply is
I have been using my TR7A with a non Drake Power Supply. When I do this the
front panel on off switch switches the 12v. I always thought this strange as
it is supposed to switch the main supply to the PS7. Two questions:
1. Is it normal that it switches 12v?
2. Is it switching the full 23amps or ju
]
[mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED]
Sent: 10 May 2008 00:22
To: [EMAIL PROTECTED]
Subject: Re: [drakelist] TR7A- Acom 1000 linear
[EMAIL PROTECTED] made an utterance to the drakelist gang
--
There's an ou
OTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED]
Sent: 10 May 2008 00:25
To: [EMAIL PROTECTED]
Subject: Re: [drakelist] TR7A- Acom 1000 linear
[EMAIL PROTECTED] made an utterance to the drakelist gang
--
A
[EMAIL PROTECTED] made an utterance to the drakelist gang
--
A follow-up: It's "Electronics Plus" -
http://www.electronicplus.com/content/ProductPage.asp?maincat=wc&subcat=wci
--
[EMAIL PROTECTED] made an utterance to the drakelist gang
--
There's an outfit California which carries the connectors you need, but
I cannot recall the name at the moment...even though I recently bought
a whole bunch of Cinch-
"John A. Stringer" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
I have just bought a TR7A and am using it with a non drake psu. I cannot get
a 10 pin cinch plug to access linear switching in the TR7A. Is there
an
Peter <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Yesterday evening I have checked U1001 on the PBT/Reference Board.
All outputs was dead and after replacing the original MC14016B with a
new one the VCXO stop
Peter <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Ulrich - DK4SX, gave me the hint via email to check the MC4066 IC on the
PBT/Reference Board.
It could be it is defect and the voltages from the power supply b
Peter <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Hello Jay,
thanks for the answere.
I think the problem is not the load from the frequency counter because
the frequency on pin 17 does not go wild up and down
HB9DUT <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
I have some trouble adjusting the VCXO on my TR7A.
I have replaced all trimmers an the power supply board to multi turn
types from Bourne.
So I must do the a
"Thom R. Lacosta" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
On Mon, 25 Oct 2004 [EMAIL PROTECTED] wrote:
It is a tr7 with the upgrades with filters and warc bands that make it a
tr7a. I will clarify it in the
You asked:"Just an FYI from the Drake list. there is some doubt that
the rig is an actual tr7AThe TR7A started with serial number >10,5xx. You
stated it is s/n 9xxx. You may want to clarify or reverify it is indeed an "A."
The pic does not show thisSo, I'll ask again...Is it a TR7A or
"Ivan Whitmore" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
My TR7A has just started to display an incomplete and slightly jumbled
frequency readout. For instance, on 14.223.4 the readout shows a good 1,
an in
Question: did Drake print a User Manual and
Service Manual specially for the TR7-A ?
Someone sold my a TR7A User Manual but it turned
out to be the old TR7 manual with one extra
inlay sheet about accessories.
Twan - PA1KV
y, July 19, 2003 12:40 PM
Subject: Re: [drakelist] TR7A -- 60 Hz Hum in Headphones
> Don,
>
> Many thanks for the reply. I am really happy that this hum is not a big
> problem at all! I will install a 100 k resisitor on the hot lead of the
> headphones and pray it works. I am
Don,
Many thanks for the reply. I am really happy that this hum is not a big
problem at all! I will install a 100 k resisitor on the hot lead of the
headphones and pray it works. I am sure it will!
73's
Rob
>From: "Don and Diana Cunningham"
>To: "Rob" ,
>S
t; <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, July 18, 2003 5:42 PM
Subject: [drakelist] TR7A -- 60 Hz Hum in Headphones
>
> I just acquired a TR7A. It works great. Listening to the speaker, the
> receiver sounds great and I have been getting great audio quality rep
I just acquired a TR7A. It works great. Listening to the speaker, the
receiver sounds great and I have been getting great audio quality reports on
my SSB transmissions.
However, I do hear a pretty noticeable 60 Hz hum when I use my headphones.
(I don't notice the hum in the speaker even when th
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