Date   

Re: My Murania AM Radio isn't working

Steve Beckman
 

Hi Phil;

The 4SQRP website has some Murania photos that will help with the size and position of the feedback loop. AB1DQ's website also has some photos, as well as several mods for the Murania, including the regeneration control mod that I implemented.

73; Steve, N3SB 



Sent from my Sprint Samsung Galaxy Note8.


-------- Original message --------
From: "Philip Karras via groups.io" <ke3fl@...>
Date: 2/11/21 7:16 PM (GMT-05:00)
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] My Murania AM Radio isn't working

Hi Steve,

The instructions said to use only 1.5" for the loop, also my loop location seems to be more under the rod and not next to it. I think I'll increase the length of wire used for the loop. At present there's no way any of the loop can be above the rod in my set up. I'll take a photo of my radio as it is right now and then make changes.

I'd like to know of any mods as well.

73 de KE3FL,
Phil
-----


On Thursday, February 11, 2021, 6:58:17 PM EST, Steve Beckman <n3sb@...> wrote:


Hi Phil;

The Murania is capable of much better performance than that. Have you tried adjusting the position of the regeneration link? Too much regeneration is as bad as too little. On mine the link ended up facing mostly towards the top of the radio, as opposed to being in parallel with the turns of the coil on the ferrite rod. 

Since building it, I made a simple wiring modification that turns the volume control into a regeneration control. This mod permits setting the optimum regeneration for the frequency and the strength of the station of interest.

In the evening, the band is full of signals. WBZ Boston is booming in right now, and my QTH is not that far away from yours.

73; Steve, N3SB 




Sent from my Sprint Samsung Galaxy Note8.


-------- Original message --------
From: "Philip Karras via groups.io" <ke3fl@...>
Date: 2/11/21 6:27 PM (GMT-05:00)
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] My Murania AM Radio isn't working

Second test: I tuned the radio again and found an extremely weak station around 11 (1100kHz) holding the radio full volume close to my ear I was able to understand the transmission. I then got another AM radio and tuned it until it interfered with the Murania radio and it was tuned to ~1100 kHz as well.

So it is working just not at all well.

73 de KE3FL,
Phil
-----


On Thursday, February 11, 2021, 6:13:14 PM EST, Philip Karras via groups.io <ke3fl@...> wrote:


OK, the radio is all together but does not work at all well.

I live 20 miles from Baltimore, Washington DC and 15 miles from Frederick Maryland with numerous AM stations still active and yet I hear nothing.

The LED does get dimmer near the higher end of the band and at full volume I can hear squeals but no stations are heard.

There is static and if I place it near a switching power supply, wall wart, I can hear the characteristic high pitched AM noise. So it does well hearing digital AM noise and probably lightning as well but as a radio it is not working.

Any ideas as to what I can TRY? I think it is obvious that the audio section works also the tuner works at least to some degree but the AM decoding doesn't seem to be working or my tuner is way off the mark.

I have a frequency generator which goes up to 1 MHz, but I could use a square wave & get all the odd harmonics, I did that once with an AM transmitter I made, tubes, when I chopped off part of the sine wave (over driven) and on our big receiver I was transmitting from the fundamental all the way up as far as the receiver would go. So here's what I've tried with the generator so far:

With my scope, an Alinco DJ-X10 wide band receiver and the Muranai:
Scope kHz
601.8 X-10 = quiet at 601.8 kHz Mur ~not found
702.2 X-10 = quiet at 702.2 kHz * Mur between 5 - 6
900.2 X-10 = quiet at 900.2 kHz * Mur ~ 7
1044.0 X10 = quiet at 1044. kHz * Mur between 8 - 9

The X-10 also has a band scope and it showed a bad of frequencies being received centered around the frequency tuned in. All was quiet since the signal was not being modulated.

Tnx es 73 de KE3FL,


Re: My Murania AM Radio isn't working

Philip Karras <ke3fl@...>
 

Hi Steve,

The instructions said to use only 1.5" for the loop, also my loop location seems to be more under the rod and not next to it. I think I'll increase the length of wire used for the loop. At present there's no way any of the loop can be above the rod in my set up. I'll take a photo of my radio as it is right now and then make changes.

I'd like to know of any mods as well.

73 de KE3FL,
Phil
-----


On Thursday, February 11, 2021, 6:58:17 PM EST, Steve Beckman <n3sb@...> wrote:


Hi Phil;

The Murania is capable of much better performance than that. Have you tried adjusting the position of the regeneration link? Too much regeneration is as bad as too little. On mine the link ended up facing mostly towards the top of the radio, as opposed to being in parallel with the turns of the coil on the ferrite rod. 

Since building it, I made a simple wiring modification that turns the volume control into a regeneration control. This mod permits setting the optimum regeneration for the frequency and the strength of the station of interest.

In the evening, the band is full of signals. WBZ Boston is booming in right now, and my QTH is not that far away from yours.

73; Steve, N3SB 




Sent from my Sprint Samsung Galaxy Note8.


-------- Original message --------
From: "Philip Karras via groups.io" <ke3fl@...>
Date: 2/11/21 6:27 PM (GMT-05:00)
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] My Murania AM Radio isn't working

Second test: I tuned the radio again and found an extremely weak station around 11 (1100kHz) holding the radio full volume close to my ear I was able to understand the transmission. I then got another AM radio and tuned it until it interfered with the Murania radio and it was tuned to ~1100 kHz as well.

So it is working just not at all well.

73 de KE3FL,
Phil
-----


On Thursday, February 11, 2021, 6:13:14 PM EST, Philip Karras via groups.io <ke3fl@...> wrote:


OK, the radio is all together but does not work at all well.

I live 20 miles from Baltimore, Washington DC and 15 miles from Frederick Maryland with numerous AM stations still active and yet I hear nothing.

The LED does get dimmer near the higher end of the band and at full volume I can hear squeals but no stations are heard.

There is static and if I place it near a switching power supply, wall wart, I can hear the characteristic high pitched AM noise. So it does well hearing digital AM noise and probably lightning as well but as a radio it is not working.

Any ideas as to what I can TRY? I think it is obvious that the audio section works also the tuner works at least to some degree but the AM decoding doesn't seem to be working or my tuner is way off the mark.

I have a frequency generator which goes up to 1 MHz, but I could use a square wave & get all the odd harmonics, I did that once with an AM transmitter I made, tubes, when I chopped off part of the sine wave (over driven) and on our big receiver I was transmitting from the fundamental all the way up as far as the receiver would go. So here's what I've tried with the generator so far:

With my scope, an Alinco DJ-X10 wide band receiver and the Muranai:
Scope kHz
601.8 X-10 = quiet at 601.8 kHz Mur ~not found
702.2 X-10 = quiet at 702.2 kHz * Mur between 5 - 6
900.2 X-10 = quiet at 900.2 kHz * Mur ~ 7
1044.0 X10 = quiet at 1044. kHz * Mur between 8 - 9

The X-10 also has a band scope and it showed a bad of frequencies being received centered around the frequency tuned in. All was quiet since the signal was not being modulated.

Tnx es 73 de KE3FL,


Re: My Murania AM Radio isn't working

Steve Beckman
 

Hi Phil;

The Murania is capable of much better performance than that. Have you tried adjusting the position of the regeneration link? Too much regeneration is as bad as too little. On mine the link ended up facing mostly towards the top of the radio, as opposed to being in parallel with the turns of the coil on the ferrite rod. 

Since building it, I made a simple wiring modification that turns the volume control into a regeneration control. This mod permits setting the optimum regeneration for the frequency and the strength of the station of interest.

In the evening, the band is full of signals. WBZ Boston is booming in right now, and my QTH is not that far away from yours.

73; Steve, N3SB 




Sent from my Sprint Samsung Galaxy Note8.


-------- Original message --------
From: "Philip Karras via groups.io" <ke3fl@...>
Date: 2/11/21 6:27 PM (GMT-05:00)
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] My Murania AM Radio isn't working

Second test: I tuned the radio again and found an extremely weak station around 11 (1100kHz) holding the radio full volume close to my ear I was able to understand the transmission. I then got another AM radio and tuned it until it interfered with the Murania radio and it was tuned to ~1100 kHz as well.

So it is working just not at all well.

73 de KE3FL,
Phil
-----


On Thursday, February 11, 2021, 6:13:14 PM EST, Philip Karras via groups.io <ke3fl@...> wrote:


OK, the radio is all together but does not work at all well.

I live 20 miles from Baltimore, Washington DC and 15 miles from Frederick Maryland with numerous AM stations still active and yet I hear nothing.

The LED does get dimmer near the higher end of the band and at full volume I can hear squeals but no stations are heard.

There is static and if I place it near a switching power supply, wall wart, I can hear the characteristic high pitched AM noise. So it does well hearing digital AM noise and probably lightning as well but as a radio it is not working.

Any ideas as to what I can TRY? I think it is obvious that the audio section works also the tuner works at least to some degree but the AM decoding doesn't seem to be working or my tuner is way off the mark.

I have a frequency generator which goes up to 1 MHz, but I could use a square wave & get all the odd harmonics, I did that once with an AM transmitter I made, tubes, when I chopped off part of the sine wave (over driven) and on our big receiver I was transmitting from the fundamental all the way up as far as the receiver would go. So here's what I've tried with the generator so far:

With my scope, an Alinco DJ-X10 wide band receiver and the Muranai:
Scope kHz
601.8 X-10 = quiet at 601.8 kHz Mur ~not found
702.2 X-10 = quiet at 702.2 kHz * Mur between 5 - 6
900.2 X-10 = quiet at 900.2 kHz * Mur ~ 7
1044.0 X10 = quiet at 1044. kHz * Mur between 8 - 9

The X-10 also has a band scope and it showed a bad of frequencies being received centered around the frequency tuned in. All was quiet since the signal was not being modulated.

Tnx es 73 de KE3FL,


Re: My Murania AM Radio isn't working

Philip Karras <ke3fl@...>
 

Second test: I tuned the radio again and found an extremely weak station around 11 (1100kHz) holding the radio full volume close to my ear I was able to understand the transmission. I then got another AM radio and tuned it until it interfered with the Murania radio and it was tuned to ~1100 kHz as well.

So it is working just not at all well.

73 de KE3FL,
Phil
-----


On Thursday, February 11, 2021, 6:13:14 PM EST, Philip Karras via groups.io <ke3fl@...> wrote:


OK, the radio is all together but does not work at all well.

I live 20 miles from Baltimore, Washington DC and 15 miles from Frederick Maryland with numerous AM stations still active and yet I hear nothing.

The LED does get dimmer near the higher end of the band and at full volume I can hear squeals but no stations are heard.

There is static and if I place it near a switching power supply, wall wart, I can hear the characteristic high pitched AM noise. So it does well hearing digital AM noise and probably lightning as well but as a radio it is not working.

Any ideas as to what I can TRY? I think it is obvious that the audio section works also the tuner works at least to some degree but the AM decoding doesn't seem to be working or my tuner is way off the mark.

I have a frequency generator which goes up to 1 MHz, but I could use a square wave & get all the odd harmonics, I did that once with an AM transmitter I made, tubes, when I chopped off part of the sine wave (over driven) and on our big receiver I was transmitting from the fundamental all the way up as far as the receiver would go. So here's what I've tried with the generator so far:

With my scope, an Alinco DJ-X10 wide band receiver and the Muranai:
Scope kHz
601.8 X-10 = quiet at 601.8 kHz Mur ~not found
702.2 X-10 = quiet at 702.2 kHz * Mur between 5 - 6
900.2 X-10 = quiet at 900.2 kHz * Mur ~ 7
1044.0 X10 = quiet at 1044. kHz * Mur between 8 - 9

The X-10 also has a band scope and it showed a bad of frequencies being received centered around the frequency tuned in. All was quiet since the signal was not being modulated.

Tnx es 73 de KE3FL,


My Murania AM Radio isn't working

Philip Karras <ke3fl@...>
 

OK, the radio is all together but does not work at all well.

I live 20 miles from Baltimore, Washington DC and 15 miles from Frederick Maryland with numerous AM stations still active and yet I hear nothing.

The LED does get dimmer near the higher end of the band and at full volume I can hear squeals but no stations are heard.

There is static and if I place it near a switching power supply, wall wart, I can hear the characteristic high pitched AM noise. So it does well hearing digital AM noise and probably lightning as well but as a radio it is not working.

Any ideas as to what I can TRY? I think it is obvious that the audio section works also the tuner works at least to some degree but the AM decoding doesn't seem to be working or my tuner is way off the mark.

I have a frequency generator which goes up to 1 MHz, but I could use a square wave & get all the odd harmonics, I did that once with an AM transmitter I made, tubes, when I chopped off part of the sine wave (over driven) and on our big receiver I was transmitting from the fundamental all the way up as far as the receiver would go. So here's what I've tried with the generator so far:

With my scope, an Alinco DJ-X10 wide band receiver and the Muranai:
Scope kHz
601.8 X-10 = quiet at 601.8 kHz Mur ~not found
702.2 X-10 = quiet at 702.2 kHz * Mur between 5 - 6
900.2 X-10 = quiet at 900.2 kHz * Mur ~ 7
1044.0 X10 = quiet at 1044. kHz * Mur between 8 - 9

The X-10 also has a band scope and it showed a bad of frequencies being received centered around the frequency tuned in. All was quiet since the signal was not being modulated.

Tnx es 73 de KE3FL,


Re: 40 AND 80 Meter Net report

w2sh@...
 

I heard Johnny at 559 when he opened up with his first QNI, and I answered.  No luck. I repeated the same in response to his second call-up.  Again no luck.  Went QRT. 

I probably should have given 80m a try, for it had been long the previous night when I QSO'd CO and MN during NAQCC's monthly sprint.  Instead I went back upstairs to resume a board game with my wife (oh, I won).

72,

Charles (aka Chas), W2SH


From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Johnny AC0BQ <jomatlock@...>
Sent: Wednesday, February 10, 2021 22:01
To: 4sqrpio <4SQRP@groups.io>
Subject: [4SQRP] 40 AND 80 Meter Net report
 
Ge All 
Tough bands conditions tonight. 
On top of all the QRN the QSB was horrible on 40 and we had another net move in almost on top of me on 80 Meters. 
Well other than all of this it was FUN! 

CHECK IN'S WERE 
 40 METERS 
N4DR MARC QRO 
NOYJ BERT 
KO8S/4 KARL 
KK4ITX JOHN Partial QSB 

80 meters 
N4MJ GLENN 
NOYJ BERT 
KE4JS JOHN 
WAOITP TERRY 
WA9SWW STEVE 
Thanks everyone, Stay Warm, It's bitter cold here in the midwest. 
72, 73 
Johnny AC0BQ


--
QRP....."More smiles per Watt"
72
JOHNNY AC0BQ  ..



--
Charles Moizeau, W2SH


Re: 40 AND 80 Meter Net report

Johnny AC0BQ
 

Gm Jim 
I switched back and forth between 122 and 120.
I also rocked RIT up and down listening for Rock Bound Bayou jumpers.
I caught Bert briefly at 121.8 or so,
Never heard a peep from you.

The band reports say that better times are ahead of us!

I’m ready.
72
Johnny ACØBQ 

On Thu, Feb 11, 2021 at 11:27 AM Jim, N5IB <n5ib@...> wrote:
Marc, just before the 40m net started I heard you apparently in QSO. Nice 569 signal in the Bayou Jumper Rx.
Didn't hear the other station , and didn't hear a peep from anyone during the net time.

Jim, N5IB





--
Check out the 4SQRP website at 4sqrp.com


Re: 40 AND 80 Meter Net report

Jim, N5IB
 

Marc, just before the 40m net started I heard you apparently in QSO. Nice 569 signal in the Bayou Jumper Rx.
Didn't hear the other station , and didn't hear a peep from anyone during the net time.

Jim, N5IB


Re: 40 AND 80 Meter Net report

Matthew Halsey
 

I heard nothing in Damascus, MD!  strange.

Matt

On Feb 11, 2021, at 10:59 AM, N4DR <mapn4dr@...> wrote:

 AC0BQ on 40 meters was 57 to 58 here in Rockville, MD. I am just outside of Washington, DC.
 That is the strongest that I have ever heard any NCS of the 4S net! I probably could have gone
QRP, but usually QRP from here to the Midwest is sketchy, at best, at that time of day. Nothing heard 
on 80 Meters.

73,

Marc N4DR


Re: 40 AND 80 Meter Net report

N4DR
 

 AC0BQ on 40 meters was 57 to 58 here in Rockville, MD. I am just outside of Washington, DC.
 That is the strongest that I have ever heard any NCS of the 4S net! I probably could have gone
QRP, but usually QRP from here to the Midwest is sketchy, at best, at that time of day. Nothing heard 
on 80 Meters.

73,

Marc N4DR


Re: 40 AND 80 Meter Net report

Johnny AC0BQ
 

Gm Group
Yes, the band was Loooong on 40 meters. Solid hop was the DC, MD Area.
72
Johnny ACØBQ 

On Thu, Feb 11, 2021 at 1:23 AM Charles W. Powell via groups.io <doctorcwp=yahoo.com@groups.io> wrote:

Nothing in Louisburg except the "DX" stations.

Chas - NK8O

On 2/10/21 9:01 PM, Johnny AC0BQ wrote:
Ge All 
Tough bands conditions tonight. 
On top of all the QRN the QSB was horrible on 40 and we had another net move in almost on top of me on 80 Meters. 
Well other than all of this it was FUN! 

CHECK IN'S WERE 
 40 METERS 
N4DR MARC QRO 
NOYJ BERT 
KO8S/4 KARL 
KK4ITX JOHN Partial QSB 

80 meters 
N4MJ GLENN 
NOYJ BERT 
KE4JS JOHN 
WAOITP TERRY 
WA9SWW STEVE 
Thanks everyone, Stay Warm, It's bitter cold here in the midwest. 
72, 73 
Johnny AC0BQ


--
QRP....."More smiles per Watt"
72
JOHNNY AC0BQ  ..


--
Check out the 4SQRP website at 4sqrp.com


Re: 40 AND 80 Meter Net report

Charles W. Powell
 

Nothing in Louisburg except the "DX" stations.

Chas - NK8O

On 2/10/21 9:01 PM, Johnny AC0BQ wrote:
Ge All 
Tough bands conditions tonight. 
On top of all the QRN the QSB was horrible on 40 and we had another net move in almost on top of me on 80 Meters. 
Well other than all of this it was FUN! 

CHECK IN'S WERE 
 40 METERS 
N4DR MARC QRO 
NOYJ BERT 
KO8S/4 KARL 
KK4ITX JOHN Partial QSB 

80 meters 
N4MJ GLENN 
NOYJ BERT 
KE4JS JOHN 
WAOITP TERRY 
WA9SWW STEVE 
Thanks everyone, Stay Warm, It's bitter cold here in the midwest. 
72, 73 
Johnny AC0BQ


--
QRP....."More smiles per Watt"
72
JOHNNY AC0BQ  ..



Wednesday night net

Walter Thomas/K3ASW
 

Johnny,

You were 559 on 40m, 2115, in MD near Annapolis on a SS40 RX.

73 Walt K3ASW


Re: Bayou Jumper Power Supply

William Fogel
 

Thanks to all of you for your replies.  You have given me a lot to think about. I look forward to QSO's with all of you soon.

73   Bill

Bill Fogel AG5SK
2500 E. Business Hwy. 83, Lot 264
Mission, TX 78572
956-424-5625


Re: 40 AND 80 Meter Net report

John - KK4ITX
 

Yep, it was rough.  It reminded me of my kid brother playing with the volume control on our AM radio.  I heard you come back to me on 40m but between local noise and QSB my opportunity faded quickly !

80m was quiet but had some traffic hear and there, heard K4BAI so maybe there’s hope .

See you next week, one day I may be able to check in with my BJ.

John
KK4ITX 


Visit:  www.zaarc.org.   👁

On Feb 10, 2021, at 22:01, Johnny AC0BQ <jomatlock@...> wrote:

Ge All 
Tough bands conditions tonight. 
On top of all the QRN the QSB was horrible on 40 and we had another net move in almost on top of me on 80 Meters. 
Well other than all of this it was FUN! 

CHECK IN'S WERE 
 40 METERS 
N4DR MARC QRO 
NOYJ BERT 
KO8S/4 KARL 
KK4ITX JOHN Partial QSB 

80 meters 
N4MJ GLENN 
NOYJ BERT 
KE4JS JOHN 
WAOITP TERRY 
WA9SWW STEVE 
Thanks everyone, Stay Warm, It's bitter cold here in the midwest. 
72, 73 
Johnny AC0BQ


--
QRP....."More smiles per Watt"
72
JOHNNY AC0BQ  ..



Re: Insulator for Ground Mounted Vertical Antenna

 

Oh yeah, when it comes to hardware, supplies , etc., if McMaster-Carr doesn't have it, then it must not exist!

EuGene, KA5NLY


On Wednesday, February 10, 2021, 8:09:58 PM CST, Ed - ad7gr via groups.io <edko@...> wrote:


Check out McMaster-Carr.   They have a very large selection of material and any length you might need.
https://www.mcmaster.com/plastic-rods/shape~rod-and-disc/diameter~1-1-4/

73,
Ed - ad7gr


Re: Wednesday Evening 40 and 80 meter Nets - Wed, 02/10/2021 20:00-21:00 #cal-reminder

Matthew Halsey
 

Nothing heard again.  Do you ever run the nets earlier in the evening?

Matt
KC3OIV 


On Feb 9, 2021, at 9:00 PM, main@4SQRP.groups.io Calendar <main@4sqrp.groups.io> wrote:



Reminder: Wednesday Evening 40 and 80 meter Nets

When: Wednesday, 10 February 2021, 20:00 to 21:00, (GMT-06:00) America/Chicago

Where:40 and 80 Meters

View Event

Organizer: jomatlock@...

Description: The 40 Meter Net will be at 8:00 pm central time  on 7.122 +-. QRM
NCS is WQ5RP/ACØBQ 

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central Time Wednesday). 



The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operator is Johnny ACØBQ 

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 0300 UTC (9:00PM Central Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.


40 AND 80 Meter Net report

Johnny AC0BQ
 

Ge All 
Tough bands conditions tonight. 
On top of all the QRN the QSB was horrible on 40 and we had another net move in almost on top of me on 80 Meters. 
Well other than all of this it was FUN! 

CHECK IN'S WERE 
 40 METERS 
N4DR MARC QRO 
NOYJ BERT 
KO8S/4 KARL 
KK4ITX JOHN Partial QSB 

80 meters 
N4MJ GLENN 
NOYJ BERT 
KE4JS JOHN 
WAOITP TERRY 
WA9SWW STEVE 
Thanks everyone, Stay Warm, It's bitter cold here in the midwest. 
72, 73 
Johnny AC0BQ


--
QRP....."More smiles per Watt"
72
JOHNNY AC0BQ  ..



Re: Insulator for Ground Mounted Vertical Antenna

Curt
 

Suggestions appreciated - some of you have heard my 80 or 160m signal on the verticals - the taller one is still QRV.  don't have suitable trees hence these radiators.  these things have elevated loading coils and are top heavy ...

I see I can get about 4 feet of fiberglass rod for $9.30 - enough for several insulators from MGS4U.com  Now I just need to fill my shopping cart to offset the $11.30 shipping - which I think I can do.  I think MFJ charged me a lot more than that when I bought 2 insulators. 

I added on EFHW primarily for 80m SSB - but it wasn't doing 40m so I just shortened it by about 4 feet - so I can be QRV on 40m until the vertical is vertical again -- 

CUL 73 Curt wb8yyy


Re: Insulator for Ground Mounted Vertical Antenna

Ed - ad7gr
 

Check out McMaster-Carr.   They have a very large selection of material and any length you might need.
https://www.mcmaster.com/plastic-rods/shape~rod-and-disc/diameter~1-1-4/

73,
Ed - ad7gr

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