Date   

Re: Speaking of nets... Thursday morning net?

Wayne Dillon
 

Good morning Jeff,
Terry - WA0ITP - used to call the Thursday AM net on 40m but I believe it's been inactive for a while.
Maybe someone else knows something?
Blessings,
Wayne - NQ0RP

On Fri, May 5, 2017 at 8:48 AM, Jeff Logullo jeff@... [4sqrp] <4sqrp@...> wrote:
 

Yesterday morning at 8 Central I dialed around 7.122 listening for Morning Net activity... and heard nobody. (After scrambling in the rain, umbrella in hand, to connect my feed line, it was a disappointment!)

I realized today that I wasn't seeing any list chatter about band conditions etc. So I was wondering if that net was still active. The 4SQRP web site lists the net, but I wanted to check with the regulars to see if you indeed have that one going.

I'm a net check-in neophyte, but I always give it a try if I'm at home!

Jeff N0MII




--
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - NQ0RP

Joshua 24:14-15
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1 Jn 2:17
 
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Re: 3560 Crystals from eBay

John Clements
 

I would have to concur with the last few posts.  C10 seems to light to me.  I used up to 470pF for C10 (and 270pF for 40M) and even lowered R2 down to a 330 ohm 1/2W resistor when playing with an SVXO circuit using my crystals.  Of course my schematic is a little different as a PZT2222 transistor is used and tap the output off the emitter area instead of the base.   http://kc9on.com/ham-radio/crystals/svxo/

I'd love to be sitting at the bench tweaking that part of the circuit. Unfortunately I'm down state this weekend with some family care taking.  Maybe later next week when I get back and catch my breath I'll build up the osc circuit and play around.

Does anyone know the specs of the xtal that comes with the cricket or the source?  Would be interesting to put them on my crystal impedance meter and compare them with mine.

72 John kc9on (3rdPlanetSolar).


Speaking of nets... Thursday morning net?

Jeff Logullo N0̸MII
 

Yesterday morning at 8 Central I dialed around 7.122 listening for Morning Net activity... and heard nobody. (After scrambling in the rain, umbrella in hand, to connect my feed line, it was a disappointment!)

I realized today that I wasn't seeing any list chatter about band conditions etc. So I was wondering if that net was still active. The 4SQRP web site lists the net, but I wanted to check with the regulars to see if you indeed have that one going.

I'm a net check-in neophyte, but I always give it a try if I'm at home!

Jeff N0MII


Re: 3560 Crystals from eBay

Lee
 

Looking at the circuit – the oscillator is not loaded too heavily by the PA (it ‘sees’ a high impedance at the input of the PA), so no changes there. One simple thing to try is to pull the 2N3904 and replace with a 2N2218, 2N5179, or something NPN and metal-canned with a higher alpha….use a transistor tester to pick a suitable one. Another option is to replace R1 with a slightly lower value; this pulls up the voltage at the base of the 2N3904 and may help it kick on…………this is a non-engineers look, but an oscillator is simply an amplifier with at least unity gain and feedback into the input…..

 

Lee KX4TT

 

From: Bob Groh bob.groh@... [4sqrp]
Sent: Thursday, May 4, 2017 20:43
To: 4sqrp@...; Jim Sheldon
Subject: Re: [4sqrp] 3560 Crystals from eBay

 

 

Ouch.  Not good news but hopefully someone will find a cure.  Ah, well.  Switching to 3560 is a good idea - we just have some implementation problems.  Thanks for your work.

 

Bob, WA2CKY

 

On Thu, May 4, 2017 at 3:34 PM, 'Jim Sheldon' w0eb@... [4sqrp] <4sqrp@...> wrote:

 

I ordered a 10 pack of 3560 crystals (HC/49 style) from 3rd Planet Solar
on eBay. Got them yesterday and finally had a chance to check them out.
NONE will oscillate in the Cricket. The crystals aren't bad (they
oscillate & check good in my crystal checker) they just won't run in the
Cricket. I don't know if it's a feedback problem that needs a component
change or if it's just that there's not enough drive. They will
sometimes try to start and once in a while one of them would run in RX
mode but as soon as you hit the key to transmit (good 50 ohm dummy load
attached). The crystal would stop oscillating and it would be necessary
to cycle power to shock it back into oscillation. Maybe Dave, NM0S
would chime in on this since I'm not an engineer and don't know for sure
which component values to change in an attempt to make these crystals
work.

Jim - W0EB

 

 


Virus-free. www.avast.com


Re: 3560 crystals from ebay

Leland L. Bahr
 

I don't have a Cricket, but I would think by changing the values of C9 and C10 you could get these Ebay crystals to work nicely. Maybe try raising C10 to 220pf and reducing C9. Maybe put a variable trimmer cap in for C9 (5-75pf). Very for best activity and least chirp.
Lee, w0vt


Re: 3560 crystals from ebay

Casey
 

Ouchie..... Anxiously waiting the verdict on the HC49 crystals. I had been planning on putting in 3535 at the minimum, and perhaps 3550, 3560, and 3579. I had been wondering if there might be a problem, but from the aspect that I wanted to put in a freq cap that might not adjust properly, or possibly not oscillate.....

3535 is pretty clear, no PSK yet(a little in MI) - I had submitted it along with a few other freqs a couple years back when kc9on was asking about what freqs to add to what he offers.


I would like to use a Cricket to check into the MI QRP Net
from Northern Illinois, if at all possible.....


72/73 de Keith - KC9IH - QRP/QRPp
Know-Code Advanced-Extra Class Op
NAQCC, MI-QRP, PAARC, NorCal, CQC  
4SQRP, SKCC, QRP-ARCI, 10-X et al
Previously ~ WD9GKA, WB9HCL, K9UCF
Former Operator at WB9FXM and K9DDJ
www.ham-cram.com - W1UL Study Guide
http://hamgallery.com/Tribute/K9EAB/

Member of the ESROM SOCIETY
When you KNOW your Code
Forwards and Backwards


Re: 3560 Crystals from eBay

Tom Sevart
 

On 05/04/17 19:11, rhulett1@consolidated.net [4sqrp] wrote:


I have the same behavior with my 3560 crystal. Sometimes it works,
sometimes not. I ordered some from the auction site, hope wasn't a
waste of time.
Don't feel bad, I have that issue with my 3.579 crystal. Takes several tries of hooking the battery up to get the circuit to oscillate.


--
Tom Sevart N2UHC
St. Paul, KS


Re: 3560 Crystals from eBay

Curt
 

I have the same behavior with my 3560 crystal.  Sometimes it works, sometimes not.  I ordered some from the auction site, hope wasn't a waste of time.

Still trying for first QSO...

72, Curt KB5JO


Re: kit possibilities

Tom Sevart
 

On 05/03/17 20:26, Paul Smith psmith61@cox.net [4sqrp] wrote:


I have seen a post concerning the PSK kit rigs and the HF test set kits.
For what its worth. I like the sounds of both. I built a test set years
ago and it worked on first go. I let it get away from me but it was cool .
I'm finally about to finish my test set after having it stored away in a box for many years. I'll post pics when I'm done.

--
Tom Sevart N2UHC
St. Paul, KS


Re: 3560 Crystals from eBay

wa2cky
 

Ouch.  Not good news but hopefully someone will find a cure.  Ah, well.  Switching to 3560 is a good idea - we just have some implementation problems.  Thanks for your work.

Bob, WA2CKY

On Thu, May 4, 2017 at 3:34 PM, 'Jim Sheldon' w0eb@... [4sqrp] <4sqrp@...> wrote:
 

I ordered a 10 pack of 3560 crystals (HC/49 style) from 3rd Planet Solar
on eBay. Got them yesterday and finally had a chance to check them out.
NONE will oscillate in the Cricket. The crystals aren't bad (they
oscillate & check good in my crystal checker) they just won't run in the
Cricket. I don't know if it's a feedback problem that needs a component
change or if it's just that there's not enough drive. They will
sometimes try to start and once in a while one of them would run in RX
mode but as soon as you hit the key to transmit (good 50 ohm dummy load
attached). The crystal would stop oscillating and it would be necessary
to cycle power to shock it back into oscillation. Maybe Dave, NM0S
would chime in on this since I'm not an engineer and don't know for sure
which component values to change in an attempt to make these crystals
work.

Jim - W0EB



3560 Crystals from eBay

Jim Sheldon
 

I ordered a 10 pack of 3560 crystals (HC/49 style) from 3rd Planet Solar
on eBay. Got them yesterday and finally had a chance to check them out.
NONE will oscillate in the Cricket. The crystals aren't bad (they
oscillate & check good in my crystal checker) they just won't run in the
Cricket. I don't know if it's a feedback problem that needs a component
change or if it's just that there's not enough drive. They will
sometimes try to start and once in a while one of them would run in RX
mode but as soon as you hit the key to transmit (good 50 ohm dummy load
attached). The crystal would stop oscillating and it would be necessary
to cycle power to shock it back into oscillation. Maybe Dave, NM0S
would chime in on this since I'm not an engineer and don't know for sure
which component values to change in an attempt to make these crystals
work.

Jim - W0EB


Re: Hyper-Cricket at 12 volts?

Kenneth Ketner
 

Greetings:
Thanks for the reply.

Gottacricket. Finished it yesterday. As promised, got .7 watt out directly on my official Oak Hills qrp wattmeter at first smoke test. It retains smoke. Nice sidetone but had  clunk on key release. Will research same. I am running my straight key into the adapter. Got RX noise, but no-one about at the ColorBust frequency just then.

I wanted to ask the experts about 12 volts before trying it. Fried cricket is not appetizing. So I will try more juice, maybe try the resistor change. I would prefer a whole watt if possible.

Wouldn't the cricket be as joyful at 1 watt as it is at .7?
1 is the master number. 1 + 1 is 2, 2 + 1 is 3. 1/2 is a number, 23/32 is some kinda number....   Therefore, 1 is important, numberwise.

73
Ken Ketner
ARS KA5ELD
ARRL, RSGB, G-QRP
PO Box 65135, Lubbock, Texas 79464-5135

On May 04, 2017, at 08:17 AM, WA0ITP wrote:

GM Ken,  Yabut (always one of those isnt there).

W0EB just posted a coupla days ago that he found very little difference in output power from 9 to 12 increase.  Maybe Jim will chime in here.

The designer, NM0S, in a private email to me when I asked abt 12 volts,
said that R6 would need to be changed to 150k or 220k. I was thinking abt the convenience of using a 3 cell LiPo, and having loong battery life.  Haven't done that yet.

Sure it could be redesigned for more power, VFO, more sensitivity, etc.  But then it would be a whole new rig and not a Cricket anymore.  Dave designed it as an inexpensive, minimalist, and fun entry level rig.

btw Ken, do you own a Cricket yet?  They're great fun.
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 5/3/2017 10:41 PM, Kenneth Ketner klaine@... [4sqrp] wrote:
 
Will the little chirper take 12 volts for a bit more output? 

I recently saw a circuit, Tayloe simple tx at Hendricks kits, that got 4 watts on 3 parallel bs170 s.

Ken Ketner
KA5ELD
PO Box 65135
Lubbock, TX 79464-5135
Sent from my iPad


Re: Hyper-Cricket at 12 volts?

Jim, N5IB
 

Consider this doodad for providing 9V to your Cricket
follow the "Current Limiter" link at

http://n5ib.net/Index.xht

Easy perfboard or DIY PC board.
Has the extra feature of adjustable current limiting to keep the smoke in.

N5IB




---In 4sqrp@..., <jonigro@...> wrote :

As someone mentioned, the main reason for making the Cricket work on 12
volts is just to have it run in the shack without wasting 9 volt
batteries. My suggestion is to build a simple 9 volt regulator that has
a snap connector on the output and a powerpole (or whatever) on the
input. There would be no mods made to the Cricket and, when desired, a
12 volt power supply could be used to power it. All the parts
(regulator and a couple of capacitors) would easily fit into a 35 mm
film can (remember them?) or a small pillbox. With the current levels
we are talking about, no heat sinks would be required.
72,
John, AA0VE


Re: Cricket Parts Alert

Curt
 

I was missing a spacer.  Not sure how to send a message to just the poster.  72, Curt KB5JO


Re: Hyper-Cricket at 12 volts?

Curt
 

Possibly the drive level of the prior stage could be in play.  12 volts can allow higher power output, but there has to be enough drive level.  when there is enough drive (via an extra NPN transistor maybe) - then one can question if the 2N7000 can safely provide the dissipation.  using a BS170, perhaps again the drive level is in question. 

As I shared earlier, a companion board with VFO and an audio filter would be useful and easy, but more output power impacts the Cricket too much for most builders - and a 2X power increase isn't that noticed being about 1/2 an S-unit.  But with care one could home-brew a hyper cricket. 

One more thought - KC9ON may still sell multi-crystal boards that were intended for a Pixie - that may work fine with the Cricket.  Most shacks likely already have an audio filter (I did not ask Terry if he was using one when we QSO'ed half-way across NA. 

73 CUL

Curt


Re: Hyper-Cricket at 12 volts?

John Lonigro
 

As someone mentioned, the main reason for making the Cricket work on 12 volts is just to have it run in the shack without wasting 9 volt batteries. My suggestion is to build a simple 9 volt regulator that has a snap connector on the output and a powerpole (or whatever) on the input. There would be no mods made to the Cricket and, when desired, a 12 volt power supply could be used to power it. All the parts (regulator and a couple of capacitors) would easily fit into a 35 mm film can (remember them?) or a small pillbox. With the current levels we are talking about, no heat sinks would be required.

72,

John, AA0VE

On 05/04/2017 09:44 AM, bob.groh@gmail.com [4sqrp] wrote:

The answer is 'maybe' but it brings up the question 'why???'. The Cricket is what it is - a fun little, uncomplicated CW rig. I personally figure on leaving it the way it is. You know, somewhat before we start talking about 'overshoes' and the like. Although a nice power amp with maybe 20 dB of gain would certainly do a bit to help the 'power urge' - 1 watt in, 100 watts out. Boy, wouldn't my neighbors like that! Not exactly QRP of course either.


73 and grins
Bob Groh, WA2CKY


Re: Hyper-Cricket at 12 volts?

wa2cky
 

The answer is 'maybe' but it brings up the question 'why???'.  The Cricket is what it is - a fun little, uncomplicated CW rig.  I personally figure on leaving it the way it is.  You know, somewhat before we start talking about 'overshoes' and the like.  Although a nice power amp with maybe 20 dB of gain would certainly do a bit to help the 'power urge' - 1 watt in, 100 watts out.  Boy, wouldn't my neighbors like that!  Not exactly QRP of course either. 

73 and grins
Bob Groh, WA2CKY


Cricket Parts Alert

gary Lyons
 

I've received recent reports that at least some kits were shipped with one part missing: only 1 small aluminum spacer vs the 2 required.

I've been packaging kits in batches of 25 with individual inventories for each kit. However, it appears that some kits were missing that one part (and I've discovered the root cause). Unfortunately, I do not know how many kits were affected.

If you are one of the unfortunate kitters missing the part please contact me and I will mail it to you the same day. The email address, and my call, are on the Cricket kit page and my signature line below

72,
Gary/w0gx
CricketMaster
4sqrpcricket@...





Re: Hyper-Cricket at 12 volts?

WA0ITP
 

GM Ken,  Yabut (always one of those isnt there).

W0EB just posted a coupla days ago that he found very little difference in output power from 9 to 12 increase.  Maybe Jim will chime in here.

The designer, NM0S, in a private email to me when I asked abt 12 volts, said that R6 would need to be changed to 150k or 220k. I was thinking abt the convenience of using a 3 cell LiPo, and having loong battery life.  Haven't done that yet.

Sure it could be redesigned for more power, VFO, more sensitivity, etc.  But then it would be a whole new rig and not a Cricket anymore.  Dave designed it as an inexpensive, minimalist, and fun entry level rig.

btw Ken, do you own a Cricket yet?  They're great fun.
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 5/3/2017 10:41 PM, Kenneth Ketner klaine@... [4sqrp] wrote:

 
Will the little chirper take 12 volts for a bit more output? 

I recently saw a circuit, Tayloe simple tx at Hendricks kits, that got 4 watts on 3 parallel bs170 s.

Ken Ketner
KA5ELD
PO Box 65135
Lubbock, TX 79464-5135
Sent from my iPad


Re: Hyper-Cricket at 12 volts?2

Mike WA8BXN
 

I wonder if its a problem in the biasing of Q2. I assume the current draw went up a lot at 12 V causing the heating. I suspect it was not just the slight increase in power. The problem I see may be not so much someone trying to get more power output when using 12 (or 14) V in place of the 9 V battery but just not wanting to use (or having handy) a good 9 V battery. 

To be able to use 12 - 14 volts with the rig I would consider one of several methods. Changing the biasing (R6/R3) would perhaps work, but then if used at 9 V power out may be very low. One might try using a 9 volt regulator (7809) to power the whole rig from the higher voltage. Or one might try connecting R6 to regulated 9 V (zener circuit or real regulator) instead of the keyed 9 V line.

73/72 - Mike WA8BXN

9901 - 9920 of 24406