Today most of 6m activity is digital. Not much SSB and even less CW. Rob, NC0B
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On Dec 26, 2024, at 6:58 AM, Dave Edwards via groups.io <kd2e@...> wrote:
?My TR6 has a CW filter installed.
....Dave
On 12/25/2024 1:15 PM EST Lyndon VE7TFX <lyndon@...> wrote:
Another Christmas Day survey :-)
1) Does anyone here own a TR-6 with a CW filter installed? (I do
not need to hear from all the people who DON'T have a CW filter.)
2) If you don't have a TR-6 CW filter, have you ever seen one in
person? Or seen a TR-6 with one installed?
Thanks!
--lyndon
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Re: Drake L7 10m modification
Thanks Jim. I was wondering if someone out there had made there own input tuning coil for 10m instead of just adding a capacitor.?
Sent from my T-Mobile 5G Device
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-------- Original message -------- From: "Jim Shorney via groups.io" <jimNU0C@...> Date: 12/25/24 7:53 AM (GMT-05:00) Subject: Re: [DRAKE-RADIO] Drake L7 10m modification
You might want to give this a read. /g/DRAKE-RADIO/files/Drake%20L7%2010%20Meter%20High%20Input%20SWR%20complete.pdf On Wed, 25 Dec 2024 07:38:21 -0500 "Roger KW4EMF via groups.io" <rogerlhill@...> wrote: > Yes it had the band pass filter. I removed it. Now to "unlock" the band selector and add a capacitor. -- 73 -Jim NU0C
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My TR6 has a CW filter installed.
....Dave
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On 12/25/2024 1:15 PM EST Lyndon VE7TFX <lyndon@...> wrote:
Another Christmas Day survey :-)
1) Does anyone here own a TR-6 with a CW filter installed? (I do
not need to hear from all the people who DON'T have a CW filter.)
2) If you don't have a TR-6 CW filter, have you ever seen one in
person? Or seen a TR-6 with one installed?
Thanks!
--lyndon
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Jim the 24 VDC is okay and I changed C2108 last spring as it failed.
73, Jim VE1RB
Yes Gary exactly?what it is.
73, Jim VE1RB
On Wed, Dec 25, 2024 at 10:05?PM Gary Follett via <xntrick1948= [email protected]> wrote: Does the display read 51 950.0 on all the high bands (above 15 MHz)?
Gary
W0DVN
Also check the +24V from the PS board. C2108 can cause strange PLL issues as it fails, and it WILL fail eventually. This is a known failure point in the TR7.On Wed, 25 Dec 2024 14:24:05 -0400"Jim Harris via?" <radiove1rb@...> wrote:Hi Gary,
No I have not seen the frequency change but I have never left that way more
than a few minutes. I already decided to clean the back switch and the
molex pins etc. I will do that as soon as I can and report back here.
Thanks for the suggestion.
73, Jim VE1RB
--?73-JimNU0C
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Yes Gary exactly?what it is.
73, Jim VE1RB
On Wed, Dec 25, 2024 at 10:05?PM Gary Follett via <xntrick1948= [email protected]> wrote: Does the display read 51 950.0 on all the high bands (above 15 MHz)?
Gary
W0DVN
Also check the +24V from the PS board. C2108 can cause strange PLL issues as it fails, and it WILL fail eventually. This is a known failure point in the TR7.On Wed, 25 Dec 2024 14:24:05 -0400"Jim Harris via?" <radiove1rb@...> wrote:Hi Gary,
No I have not seen the frequency change but I have never left that way more
than a few minutes. I already decided to clean the back switch and the
molex pins etc. I will do that as soon as I can and report back here.
Thanks for the suggestion.
73, Jim VE1RB
--?73-JimNU0C
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I got the last LSB filter direct from Bill Frost when Drake had their clearance sale of all the Ham parts. Just because I could. I probably got a CW filter at the same time if it was available but I don't recall. I would have to look. On Thu, 26 Dec 2024 03:49:53 +0000 "Steve Wedge, W1ES/4 via groups.io" <w1es@...> wrote: My TR-6 only has the stock USB and an AM filter.
I¡¯ve never thought I¡¯ve needed a CW or LSB filter but they are rare.
Steve Wedge, W1ES -- 73 -Jim NU0C
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My TR-6 only has the stock USB and an AM filter.?
I¡¯ve never thought I¡¯ve needed a CW or LSB filter but they are rare.?
Steve Wedge, W1ES
Time flies like an arrow. Fruit flies like a banana.
On Wed, Dec 25, 2024 at 17:31, Jim Shorney via groups.io < jimNU0C@...> wrote:
How about "I'm not sure"? :D It's been so long that I don't remember.
On Wed, 25 Dec 2024 10:15:41 -0800
"Lyndon VE7TFX via groups.io" <lyndon@...> wrote:
> I do
> not need to hear from all the people who DON'T have a CW filter.
--
73
-Jim
NU0C
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Does the display read 51 950.0 on all the high bands (above 15 MHz)?
Gary
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On Dec 25, 2024, at 4:29?PM, Jim Shorney via groups.io <jimNU0C@...> wrote:
Also check the +24V from the PS board. C2108 can cause strange PLL issues as it fails, and it WILL fail eventually. This is a known failure point in the TR7.On Wed, 25 Dec 2024 14:24:05 -0400"Jim Harris via?" <radiove1rb@...> wrote:Hi Gary,
No I have not seen the frequency change but I have never left that way more
than a few minutes. I already decided to clean the back switch and the
molex pins etc. I will do that as soon as I can and report back here.
Thanks for the suggestion.
73, Jim VE1RB
--?73-JimNU0C
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The Sunday Drake Net is on 7238 +/- QRM, from 4-5 PM Eastern time. ?You can listen to it via some of the remote receiver sites in the midwest and east coast; I do not have a website listing.
Merry Christmas to all.
I need the freqs and times for Drake phone (or CW) nets. Tnx & 73 Jay W6CJ
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I need the freqs and times for Drake phone (or CW) nets. Tnx & 73 Jay W6CJ
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How about "I'm not sure"? :D It's been so long that I don't remember. On Wed, 25 Dec 2024 10:15:41 -0800 "Lyndon VE7TFX via groups.io" <lyndon@...> wrote: I do
not need to hear from all the people who DON'T have a CW filter. -- 73 -Jim NU0C
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Also check the +24V from the PS board. C2108 can cause strange PLL issues as it fails, and it WILL fail eventually. This is a known failure point in the TR7. On Wed, 25 Dec 2024 14:24:05 -0400 "Jim Harris via groups.io" <radiove1rb@...> wrote: Hi Gary,
No I have not seen the frequency change but I have never left that way more
than a few minutes. I already decided to clean the back switch and the
molex pins etc. I will do that as soon as I can and report back here.
Thanks for the suggestion.
73, Jim VE1RB -- 73 -Jim NU0C
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Re: R4C Passband Tuning ?
Bob & Group, I think I've got it solved. Using an IFR1200S (GPS ref) service monitor, I tuned the R4C and T4XC oscillators to 5645, as well as the AM oscillator. My R4C (recently back from service) oscillator was 1.4 KHz low, which was the issue. I re-adjusted T-11 for bandpass center. Thanks all 73 Jay W6CJ
I am going from memory and do not have a manual in front of me. So here goes.
The incoming signal to the R-4C is converted to the first IF of 5.645-MHz. In the second mixer, SSB and CW signals are converted to 5.695-MHz with the 50-kHz BFO signal.?
The signal passes through the selected the second IF filter to the third mixer. The oscillator for the third mixer is from an oscillator located under the filter shield located rear center, top side of the receiver.?
There is one oscillator with two crystals, one being 5.645-MHz that is used on SSB and CW to produce the 50-kHz third IF. The frequency of the other oscillator I forget but it converts AM signals at 5.645-MHz to 50-kHz.
To get the receiver 5.645-MHz oscillator on the same frequency as the signal on the "Carrier Osc" lead from the T-4XC, there is a variable capacitor for adjustment. It is under that shield on the same PC board with the oscillator and adjustment capacitors of the R-4C. Yes, the other variable capacitor is for the AM oscillator.?
Maybe someone can pipe in here with the capacitor designators.
73 and Merry Christmas to all.
Bob Loving K9JU
Maryville, TN
On Tuesday, December 24, 2024 at 04:25:16 PM EST, Rob Sherwood via <rob= [email protected]> wrote:
Yes. Rob
?
Rob,
Connect my service monitor/counter to the CAR OSC jack, and adjust C6 for exactly 5645 Khz?
Tnx&73
Jay
W6CJ
The 5645 kHz LO from the transmitter if off frequency.? Rob, NC0B?
?
Group,
I have my "new" Twins hooked up and making QSOs.
I noticed that with the R4C in LSB, and passband on the LSB "dot" for best LSB reception........? when I turn on the T4XC, I have to re-tune the R4C passband down to the RTTY region, for LSB reception to sound the same.
Is this normal?
What would cause the passband tuning shift?
Merry Christmas & 73
??????
Jay
W6CJ
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I built a homemade AUX7. I populated it with 30M and IIRC 17M and 24M.
- Jerry, KF6VB
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On 2024-12-25 09:53, Lyndon VE7TFX wrote: Merry Christmas!
A quetion to ponder as you gaze in wonder at the TR-6 Santa
left for you under the tree ...
If you had your choice of any eight band modules to populate your
AUX-7 with, what would they be?
Please reply directly to me. I will send a summary of the results
to the list after the replies taper off.
Cheers,
--lyndon
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Lyndon,
I have a TR-6 with all the filters.? What do you need?
73,
Bill, K3PGB
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On 12/25/2024 1:15 PM, Lyndon VE7TFX wrote: Another Christmas Day survey :-)
1) Does anyone here own a TR-6 with a CW filter installed? (I do
not need to hear from all the people who DON'T have a CW filter.)
2) If you don't have a TR-6 CW filter, have you ever seen one in
person? Or seen a TR-6 with one installed?
Thanks!
--lyndon
|
Hi Gary, No I have not seen the frequency change but I have never left that way more than a few minutes. I already decided to clean the back switch and the molex pins etc. I will do that as soon as I can and report back here. Thanks for the?suggestion.
73, Jim VE1RB
On Wed, Dec 25, 2024 at 2:07?PM Gary Follett via <xntrick1948= [email protected]> wrote: Does the radio wander up to this frequency and then sort of slowly stop wandering??
The local oscillator in this radio is simply the output of a VCO in the synthesizer, one that uses the analog PTO as a reference. That is how you get a PLL that can be varied by a simple analog PTO without need for producing a premix, such as was produced in the ¡°4 line¡± radios, and many others.
This local oscillator mixes with the incoming signal to be heterodyned to the first IF, 48.05 MHz. The DR7 simply counts this local oscillator signal, subtracts the IF frequency from the LO signal to produce the reading you see on the display.
There are two separate VCO¡¯s in the TR7 (and R7). One covers the low bands 0-15 MHz and the other covers the high bands 15 to 30 MHz.
Thus it appears that your high band VCO is not operating. Of course, cleaning the band switch nd the Molex connectors on the VCO board are your first things to do.
Gary
W0DVN
I now have the receiver and transmitter working good. The problem now is that the 15 and 10 meter bands do not work. The display shows the frequency in the photo. I am trying to find time to read how the frequencies are done. Anyone seen this before or have any suggestions where to look for the trouble? Thanks again for your help.?
73, Jim VE1RB <IMG_1157.jpeg>
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Another Christmas Day survey :-)
1) Does anyone here own a TR-6 with a CW filter installed? (I do
not need to hear from all the people who DON'T have a CW filter.)
2) If you don't have a TR-6 CW filter, have you ever seen one in
person? Or seen a TR-6 with one installed?
Thanks!
--lyndon
|
Does the radio wander up to this frequency and then sort of slowly stop wandering??
The local oscillator in this radio is simply the output of a VCO in the synthesizer, one that uses the analog PTO as a reference. That is how you get a PLL that can be varied by a simple analog PTO without need for producing a premix, such as was produced in the ¡°4 line¡± radios, and many others.
This local oscillator mixes with the incoming signal to be heterodyned to the first IF, 48.05 MHz. The DR7 simply counts this local oscillator signal, subtracts the IF frequency from the LO signal to produce the reading you see on the display.
There are two separate VCO¡¯s in the TR7 (and R7). One covers the low bands 0-15 MHz and the other covers the high bands 15 to 30 MHz.
Thus it appears that your high band VCO is not operating. Of course, cleaning the band switch nd the Molex connectors on the VCO board are your first things to do.
Gary
W0DVN
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On Dec 25, 2024, at 11:44?AM, Jim Harris via groups.io <radiove1rb@...> wrote:
I now have the receiver and transmitter working good. The problem now is that the 15 and 10 meter bands do not work. The display shows the frequency in the photo. I am trying to find time to read how the frequencies are done. Anyone seen this before or have any suggestions where to look for the trouble? Thanks again for your help.?
73, Jim VE1RB <IMG_1157.jpeg>
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Merry Christmas!
A quetion to ponder as you gaze in wonder at the TR-6 Santa
left for you under the tree ...
If you had your choice of any eight band modules to populate your
AUX-7 with, what would they be?
Please reply directly to me. I will send a summary of the results
to the list after the replies taper off.
Cheers,
--lyndon
|
I now have the receiver and transmitter working good. The problem now is that the 15 and 10 meter bands do not work. The display shows the frequency in the photo. I am trying to find time to read how the frequencies are done. Anyone seen this before or have any suggestions where to look for the trouble? Thanks again for your help.?
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Rob Sherwood
Jim Shorney
Jay W6CJ