|
Hi,
I know that I may have been possibly down this route earlier, and I
went through some of the message threads from a while ago, so
apologies to all those who may have seen this query before
Let me start backwards.
I plan to get 20 Watts from the K5BCQ amplifier (20W version). This
uses the RD16HHF1 and I have this module - works. So for an output of
43dbm, and assuming a gain of 16 dbm I get 43-16 = 27dbm.
Now, my exciter the barebone version gives me about 330mV (-5.6dbm) at
the output, so I have a deficit of 27+6 = 33 dbm
I can make up this using a PGA103+ (yes, I've been down this route
before) this home brew module has an input transformer on the input
and the output and produces about 19dbm of gain or about 5Vpp into a
50ohm load.
I require to make up the balance using either a 2N5109 or a 2N3866,
but I'm stuck at a design where I cannot deduce the input transformer
for the 2N3866 or the 2N5109. I've tried the Universal Wideband
Amplifier Universal Wideband RF Amplifier (kitsandparts.com)
I actually used - UWA 2N5109 Characteristics (qsl.net)
Alternatively, I have a working (homebrew) OPA2677 design that
produces 5Vpp (18dbm).
Can someone point me to a reliable design that has a 50 ohm
termination both ends and can drive the K5BCQ for a 43dbm output.
Apologies for beating the drums on this one again, I really must get
this out working. :-)
Thanks
M0RVI/Ravi
--
I'm here to add more value to the world than I'm using up.
|
You will need two stages to get to 33db gain. A pair of BFU590Gx will get you there. The another BFU590GX as a predriver will do the trick. Beaware that these transistors work at 8v, not 12v.
I would also refer to you EMRFD to understand the technique of cascading amplifies. You have to hit appropriate IMD performance of each stage to keep the total IMD down.
On Wed, Sep 11, 2024, 1:56 AM Ravi Miranda via <ravimiranda= [email protected]> wrote: Hi,
I know that I may have been possibly down this route earlier, and I
went through some of the message threads from a while ago, so
apologies to all those who may have seen this query before
Let me start backwards.
I plan to get 20 Watts from the K5BCQ amplifier (20W version). This
uses the RD16HHF1 and I have this module - works. So for an output of
43dbm, and assuming a gain of 16 dbm I get 43-16 = 27dbm.
Now, my exciter the barebone version gives me about 330mV (-5.6dbm) at
the output, so I have a deficit of 27+6 = 33 dbm
I can make up this using a PGA103+ (yes, I've been down this route
before) this home brew module has an input transformer on the input
and the output and produces about 19dbm of gain or about 5Vpp into a
50ohm load.
I require to make up the balance using either a 2N5109 or a 2N3866,
but I'm stuck at a design where I cannot deduce the input transformer
for the 2N3866 or the 2N5109. I've tried the Universal Wideband
Amplifier Universal Wideband RF Amplifier ()
I actually used - UWA 2N5109 Characteristics ()
Alternatively, I have a working (homebrew) OPA2677 design that
produces 5Vpp (18dbm).
Can someone point me to a reliable design that has a 50 ohm
termination both ends and can drive the K5BCQ for a 43dbm output.
Apologies for beating the drums on this one again, I really must get
this out working. :-)
Thanks
M0RVI/Ravi
--
I'm here to add more value to the world than I'm using up.
|
K9HZ design of 20 W HF amp - requires I believe 1 mw input drive.
?
Rich
WE8T
?
|
K9HZ has a driver stage that the K5BCQ amp does not.
That means the K(HZ amp has a far lower drive in the
1-3mW region.
?
That all well and good save for the source (Ravi) says there is -5.6dbm available.
So about 8db of gain is needed and a 2n3904? (use 10ma emitter current and
set gain via feedback? to 9-10db) will do that easily.
?
At 10Db that would provide excess gain and that easily attenuated.
?
Over all gain needs to be in round number 50db.? Excess is manageable,
insufficient is problematic.? The evil is trying to get too much gain out of
any one stage as instability is the likely result.? The next error is trying to
get gain that is unattainable at 28mhz!? Ideal is a bit more gain, say
3dB more and nearly constant (no fall off of gain) from 2-30mhz.
?
Using the k5bcq amp says 33dbm more is needed.? ?Two 2n3904 and one
2n2219 can do that if correctly biased and gain held to roughly 11db per
stage.? Note the driver stage MUST deliver at least .5W for the 'BCQ amp
to attain full output (20W).
?
NOTE high standing current does not guarantee a clean amplifier, just
a very warm one and a dead battery.??
?
NOTE: 300mhz transistors do not produce high gain at 28mhz!? Getting 11DB is
about the best one can expect with certainty at 28mhz.
?
?
--
Allison
------------------
Please use the forum, offline and private will go to bit bucket.
|
As the designer of that little monster, the exact specs are: ? Power Requirements: 12-15 VDC at 3A max. Frequency Range: 1.8MHz – 54Mhz. ? Gain Linearity in Frequency Range: +0.3/-0.8 dB. Input: 1mw nominal, 50 ohms. Pad for higher power input. Output: 10Wor 15W RMS min (selectable by gain resistors), 20W PEP, 50 ohms. Pre-driver: OPA2674ID High Frequency Dual Video Amplifier. Final Transistor Complement: Push-Pull pair of RD16HHF1-501. Class of Operation (equivalent): Normally AB2, but can be any class C-A. Bias Setting: 250ma per RD16HHF1 for AB2 operation. PTT: 3-12V positive voltage at J3. Modes of Operation: AM, CW, SSB, FM. ? Cost $19.28 plus shipping… ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of ajparent1/kb1gmx
Sent: Wednesday, September 11, 2024 10:13 AM
To: [email protected]
Subject: Re: [BITX20] Renewed attempt to hack together a workable PA? K9HZ has a driver stage that the K5BCQ amp does not. That means the K(HZ amp has a far lower drive in the That all well and good save for the source (Ravi) says there is -5.6dbm available. So about 8db of gain is needed and a 2n3904? (use 10ma emitter current and set gain via feedback? to 9-10db) will do that easily. At 10Db that would provide excess gain and that easily attenuated. Over all gain needs to be in round number 50db.? Excess is manageable, insufficient is problematic.? The evil is trying to get too much gain out of any one stage as instability is the likely result.? The next error is trying to get gain that is unattainable at 28mhz!? Ideal is a bit more gain, say 3dB more and nearly constant (no fall off of gain) from 2-30mhz. Using the k5bcq amp says 33dbm more is needed.? ?Two 2n3904 and one 2n2219 can do that if correctly biased and gain held to roughly 11db per stage.? Note the driver stage MUST deliver at least .5W for the 'BCQ amp to attain full output (20W). NOTE high standing current does not guarantee a clean amplifier, just a very warm one and a dead battery.?? NOTE: 300mhz transistors do not produce high gain at 28mhz!? Getting 11DB is about the best one can expect with certainty at 28mhz. Allison
------------------
Please use the forum, offline and private will go to bit bucket.
|
Bill,?
What is the 20W PCB size? Can’t seem to find it anywhere….
?
Also, is there still stock on the semi-kits?
?
73,
Robert VE7ZN
|
I’ve sold over 2,100 kits to date and still have parts to make at least 200 more… here is a link to my GITHUB… has everything you need. (BTW you can easily saw that PA in the sBITx out and the 20W PA fits in its place perfectly.? That’s what I did.? You need to retain the LPFs though.).? I’m currently away from home but teach a 3 week class at UT starting next week so will take and fill orders again then. ? ? ? ? ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
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Show quoted text
From: [email protected] <[email protected]> On Behalf Of Robert Dale
Sent: Wednesday, September 11, 2024 11:21 AM
To: [email protected]
Subject: Re: [BITX20] Renewed attempt to hack together a workable PA? What is the 20W PCB size? Can’t seem to find it anywhere…. Also, is there still stock on the semi-kits?
|
Thanks Allison once again. I could use an 2N5109 and an 2N3866 instead of the 2N2219s, but will a 2N3904 be required too in the initial stage? Best 73, Ravi/M0RVI On Wed, 11 Sept 2024 at 16:13, ajparent1/kb1gmx via groups.io <kb1gmx@...> wrote:
K9HZ has a driver stage that the K5BCQ amp does not.
That means the K(HZ amp has a far lower drive in the
1-3mW region.
That all well and good save for the source (Ravi) says there is -5.6dbm available.
So about 8db of gain is needed and a 2n3904 (use 10ma emitter current and
set gain via feedback to 9-10db) will do that easily.
At 10Db that would provide excess gain and that easily attenuated.
Over all gain needs to be in round number 50db. Excess is manageable,
insufficient is problematic. The evil is trying to get too much gain out of
any one stage as instability is the likely result. The next error is trying to
get gain that is unattainable at 28mhz! Ideal is a bit more gain, say
3dB more and nearly constant (no fall off of gain) from 2-30mhz.
Using the k5bcq amp says 33dbm more is needed. Two 2n3904 and one
2n2219 can do that if correctly biased and gain held to roughly 11db per
stage. Note the driver stage MUST deliver at least .5W for the 'BCQ amp
to attain full output (20W).
NOTE high standing current does not guarantee a clean amplifier, just
a very warm one and a dead battery.
NOTE: 300mhz transistors do not produce high gain at 28mhz! Getting 11DB is
about the best one can expect with certainty at 28mhz.
--
Allison
------------------
Please use the forum, offline and private will go to bit bucket.
-- I'm here to add more value to the world than I'm using up.
|
Greets Robert.
?
? ?I've also been slowly working on replacing the uBITX PA chain, and have been looking at options.
?
? ?I had boards made for the subject 20 W amp, and have procured the recommended heat sink. Both are unfortunately large if one wants to stuff them into a uBITX case.
?
? ?The PCB is 2" x 5.5" (about 5 x 14 cm).? The heatsink is 6.9 cm wide, 15 cm long, and 3.6 cm deep.
?
? ?Attached photos show it in comparison to the QRP Labs 10W amp (capable of 20 with more drive and DC input, apparently).
?
? ?Separately, I have purchased a 50 W linear from a Ukrainian ham that has had a 10 and 20 W amp on the streets for some time - they look like they might be the origin of the subject 20 W amp. The 50 W amp has been bulletproof.
60dbm.com
?
? ?Good hunting,
? ? 73, Andy
KG5RKP/MM
?
?
On Wed, Sep 11, 2024 at 11:20 AM, Robert Dale wrote:
Bill,?
What is the 20W PCB size? Can’t seem to find it anywhere….
?
Also, is there still stock on the semi-kits?
?
73,
Robert VE7ZN
|
On Wed, Sep 11, 2024 at 09:49 AM, Ravi Miranda wrote:
Thanks Allison once again. I could use an 2N5109 and an 2N3866 instead
of the 2N2219s, but will a 2N3904 be required too in the initial
stage?
Instead of 2219 yes on 3866 or 5109.? They are all about the same
power capability and gain (stay under 12DB).
?
For the other stages 3904 is adequate so long as the amps are built to
deliver 11db max.? Since the 3866 and 5109 are 28V devices trying
to get more than 12DB from them is difficult and more costly.
?
Everyone tries to get max gain to save a simple stage and usual
result is instability or poor performance at higher frequencies.
?
IF you use the K9HZ amp you still need some more gain (about 10db)
but? less than the 'BCQ amp.? a 3904 can do that.
?
--
Allison
------------------
Please use the forum, offline and private will go to bit bucket.
|
If you can do 20-24V the QRPL amp (10W at 13.8V) can do more.
to do higher 20V or 24V with about 20dbm drive should easily
hit 20+W based on testing.? Note to run at 24V some of the
electrolytic caps need to be replaced with higher voltage parts.
Those are C204 and C210, C210, C212.? at that power level
use a bigger heatsink.
?
At 26db ggain you still need two stages of gain to hit the minimum
drive (about 15dbm)? two 2n3904s can do that at limited gain.
Everyone will try to squeeze 20db of gain out of what ever
and at below 20M it might work...maybe.
?
--
Allison
------------------
Please use the forum, offline and private will go to bit bucket.
|
You had boards made?? And to think, I sell them for $1. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of AndyH
Sent: Wednesday, September 11, 2024 12:16 PM
To: [email protected]
Subject: Re: [BITX20] Renewed attempt to hack together a workable PA? ? ?I've also been slowly working on replacing the uBITX PA chain, and have been looking at options. ? ?I had boards made for the subject 20 W amp, and have procured the recommended heat sink. Both are unfortunately large if one wants to stuff them into a uBITX case. ? ?The PCB is 2" x 5.5" (about 5 x 14 cm).? The heatsink is 6.9 cm wide, 15 cm long, and 3.6 cm deep. ? ?Attached photos show it in comparison to the QRP Labs 10W amp (capable of 20 with more drive and DC input, apparently). ? ?Separately, I have purchased a 50 W linear from a Ukrainian ham that has had a 10 and 20 W amp on the streets for some time - they look like they might be the origin of the subject 20 W amp. The 50 W amp has been bulletproof. On Wed, Sep 11, 2024 at 11:20 AM, Robert Dale wrote: What is the 20W PCB size? Can’t seem to find it anywhere…. Also, is there still stock on the semi-kits?
|
I got on a list for a semi kit, and waited, and waited, but fell thru the cracks in the system. I already had most of the parts - it was easier to just get it done.
?
On Thu, Sep 12, 2024 at 07:55 AM, K9HZ wrote:
You had boards made?? And to think, I sell them for $1.
?
?
Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ
?
Owner - Operator
Big Signal Ranch – K9ZC
Staunton, Illinois
?
Owner – Operator
Villa Grand Piton – J68HZ
Soufriere, St. Lucia W.I.
Rent it:
?
Moderator: North American QRO Group at Groups.IO.
Moderator: Amateur Radio Builders Group at Groups.IO.
?
email:? bill@...
?
?
?
? ?I've also been slowly working on replacing the uBITX PA chain, and have been looking at options.
? ?I had boards made for the subject 20 W amp, and have procured the recommended heat sink. Both are unfortunately large if one wants to stuff them into a uBITX case.
? ?The PCB is 2" x 5.5" (about 5 x 14 cm).? The heatsink is 6.9 cm wide, 15 cm long, and 3.6 cm deep.
? ?Attached photos show it in comparison to the QRP Labs 10W amp (capable of 20 with more drive and DC input, apparently).
? ?Separately, I have purchased a 50 W linear from a Ukrainian ham that has had a 10 and 20 W amp on the streets for some time - they look like they might be the origin of the subject 20 W amp. The 50 W amp has been bulletproof.
On Wed, Sep 11, 2024 at 11:20 AM, Robert Dale wrote:
What is the 20W PCB size? Can’t seem to find it anywhere….
Also, is there still stock on the semi-kits?
|
Interesting… I’ve had the boards in stock continuously for the last 1.5 years… and the kits in stock except when I ran out of parts… that rarely lasted for more than two weeks. ? I guess that’s a learning for me.? Advertise more.? But then… I sell the things at cost. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of AndyH
Sent: Thursday, September 12, 2024 8:58 AM
To: [email protected]
Subject: Re: [BITX20] Renewed attempt to hack together a workable PA? I got on a list for a semi kit, and waited, and waited, but fell thru the cracks in the system. I already had most of the parts - it was easier to just get it done. On Thu, Sep 12, 2024 at 07:55 AM, K9HZ wrote: You had boards made?? And to think, I sell them for $1. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? ? ? ?I've also been slowly working on replacing the uBITX PA chain, and have been looking at options. ? ?I had boards made for the subject 20 W amp, and have procured the recommended heat sink. Both are unfortunately large if one wants to stuff them into a uBITX case. ? ?The PCB is 2" x 5.5" (about 5 x 14 cm).? The heatsink is 6.9 cm wide, 15 cm long, and 3.6 cm deep. ? ?Attached photos show it in comparison to the QRP Labs 10W amp (capable of 20 with more drive and DC input, apparently). ? ?Separately, I have purchased a 50 W linear from a Ukrainian ham that has had a 10 and 20 W amp on the streets for some time - they look like they might be the origin of the subject 20 W amp. The 50 W amp has been bulletproof. On Wed, Sep 11, 2024 at 11:20 AM, Robert Dale wrote: What is the 20W PCB size? Can’t seem to find it anywhere…. Also, is there still stock on the semi-kits?
|
I suspect the nub of Andy's problem was the list of potential buyers that was run for many months before you understandably decided it was too much effort for too little gain to chase up the people on the list once you had stock available and opened purchase to all comers. I think quite a few on the list thought the list was still active and that you would get to them in time, so didn't respond to your "all comers" invitation, hence didn't actually lodge orders with you. I know I nearly fell into that category.
?
Bill, VK7MX
|
I read almost all the information, but because of the many advertisements, useful data can be lost.
--
Gyula HA3HZ
|
Hi Allison Thank you for that information, I'll experiment on higher voltages, I have a PS that will go upto 30V, yes replacing the electrolytic beforehand seems like a good idea. In the meantime, I've done some simulations on LTSPice for a BFR93 + BFU590 pushpull. I will share that shortly. I will put the bitx on the air once I get past the hurdle. The first part looks promising, working on the next stage later today, in between meetings. Best 73, Ravi On Wed, 11 Sept 2024 at 21:33, ajparent1/kb1gmx via groups.io <kb1gmx@...> wrote:
If you can do 20-24V the QRPL amp (10W at 13.8V) can do more.
to do higher 20V or 24V with about 20dbm drive should easily
hit 20+W based on testing. Note to run at 24V some of the
electrolytic caps need to be replaced with higher voltage parts.
Those are C204 and C210, C210, C212. at that power level
use a bigger heatsink.
At 26db ggain you still need two stages of gain to hit the minimum
drive (about 15dbm) two 2n3904s can do that at limited gain.
Everyone will try to squeeze 20db of gain out of what ever
and at below 20M it might work...maybe.
--
Allison
------------------
Please use the forum, offline and private will go to bit bucket.
-- I'm here to add more value to the world than I'm using up.
|
Hi William,
Yes, I did. Learned Eagle and Kicad along the way. Fingers crossed, I hope it all works. I did make a OP2674 board, but I think I used incorrect input/output transformers. I will put it down to a learning experience.?
Best 73,
Ravi/M0RVI
You had boards made?? And to think, I sell them for $1. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? ? ? ?I've also been slowly working on replacing the uBITX PA chain, and have been looking at options. ? ?I had boards made for the subject 20 W amp, and have procured the recommended heat sink. Both are unfortunately large if one wants to stuff them into a uBITX case. ? ?The PCB is 2" x 5.5" (about 5 x 14 cm).? The heatsink is 6.9 cm wide, 15 cm long, and 3.6 cm deep. ? ?Attached photos show it in comparison to the QRP Labs 10W amp (capable of 20 with more drive and DC input, apparently). ? ?Separately, I have purchased a 50 W linear from a Ukrainian ham that has had a 10 and 20 W amp on the streets for some time - they look like they might be the origin of the subject 20 W amp. The 50 W amp has been bulletproof. On Wed, Sep 11, 2024 at 11:20 AM, Robert Dale wrote: What is the 20W PCB size? Can’t seem to find it anywhere…. Also, is there still stock on the semi-kits?
-- I'm here to add more value to the world than I'm using up.
|
The learning for me was that I should never announce a product/ kit before I have them in hand and sell out what I have, re-stock and repeat.? No more lists.? I used the list to gauge part purchases in advance to negotiate the absolute best prices for the kits.? The kits, as always, were sold at my cost so the savings by planning went to the buyers. ? You know what they say.?? Learn.? Never again. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Bill Maxwell via groups.io
Sent: Thursday, September 12, 2024 6:04 PM
To: [email protected]
Subject: Re: [BITX20] Renewed attempt to hack together a workable PA? I suspect the nub of Andy's problem was the list of potential buyers that was run for many months before you understandably decided it was too much effort for too little gain to chase up the people on the list once you had stock available and opened purchase to all comers. I think quite a few on the list thought the list was still active and that you would get to them in time, so didn't respond to your "all comers" invitation, hence didn't actually lodge orders with you. I know I nearly fell into that category.
|
William, I'm not sure what you are talking about here. I'm mentioning about the 20Watt amp that I have and uBITx board I built and I am/was looking for advice on the predriver stages. This is not a kit and is my bespoke build. Maybe you are on the wrong thread? Have a lovely day and good weekend. Best 73, Ravi/M0RVI On Fri, 13 Sept 2024 at 13:53, K9HZ via groups.io <bill@...> wrote:
The learning for me was that I should never announce a product/ kit before I have them in hand and sell out what I have, re-stock and repeat. No more lists. I used the list to gauge part purchases in advance to negotiate the absolute best prices for the kits. The kits, as always, were sold at my cost so the savings by planning went to the buyers.
You know what they say. Learn. Never again.
Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ
Owner - Operator
Big Signal Ranch – K9ZC
Staunton, Illinois
Owner – Operator
Villa Grand Piton – J68HZ
Soufriere, St. Lucia W.I.
Rent it: www.VillaGrandPiton.com
Moderator: North American QRO Group at Groups.IO.
Moderator: Amateur Radio Builders Group at Groups.IO.
email: bill@...
From: [email protected] <[email protected]> On Behalf Of Bill Maxwell via groups.io
Sent: Thursday, September 12, 2024 6:04 PM
To: [email protected]
Subject: Re: [BITX20] Renewed attempt to hack together a workable PA
I suspect the nub of Andy's problem was the list of potential buyers that was run for many months before you understandably decided it was too much effort for too little gain to chase up the people on the list once you had stock available and opened purchase to all comers. I think quite a few on the list thought the list was still active and that you would get to them in time, so didn't respond to your "all comers" invitation, hence didn't actually lodge orders with you. I know I nearly fell into that category.
Bill, VK7MX
-- I'm here to add more value to the world than I'm using up.
|
K9HZ
HA3HZ
