Re: [Elecraft] KBPF3 mod SMD capacitors

Thank you, Keith, this is exactly what I needed to know! Nick On Tue, 25 Jul 2023 at 12:54, Keith Trinity WE6R wrote: > We use; C3,C4,C60.1uF , 50V, 10% X7R 0603Elecraft part # E530306 > It is not critical. > > Mouser and others have them; >

Re: [Elecraft] KBPF3 mod SMD capacitors

We use; C3,C4,C6    0.1uF , 50V, 10% X7R 0603    Elecraft part # E530306 It is not critical. Mouser and others have them; https://www.mouser.com/c/?q=0.1%20uF%2C50V%2C10%25%2CX7R%2C0603%2CSMD DigiKey; https://www.digikey.com/en/products/filter/ceramic-capacitors/60?s FYI, it is easiest to just

[Elecraft] KBPF3 mod SMD capacitors

I know the original KBPF3 mod kit is no longer available, but I've come across an unmodified board that I'm considering trying to source parts for to handle the mod myself. I did some searching and I read that a Nichicon RL81C221MDN1KX might work for the electrolytic cap, but I haven't found what

[Elecraft] KBPF3 Mod kit for K3

I purchased the KBPF3 mod kit to update my General coverage receive module. I have a K3 purchased 10-15-14 and KBPF3 module Purchased 3-20-15. I'm confused because my board says KBPF3 Rev. A but its an A2 and apparently the newer board is an A3. I contacted Elecraft support and was told that

Re: [Elecraft] KBPF3 mod kit

Can't speak for right/left but yes to the one with the handle. Sent from my iPhone ...nr4c. bill > On Mar 13, 2017, at 5:11 PM, Dauer, Edward wrote: > > I just ordered the KIO3B and a KBPF3 mod kit for the K3. The process of > installing the KBPF3 mod provides access to

Re: [Elecraft] KBPF3 mod kit

Ted, On the battery replacement, it is easy, bu consider whether you really use the real time clock on the K3 - keeping the clock going during power down is its only use. If you do not use the internal clock, then do not bother. When you have the K3 open, it is an opportune time to replace

Re: [Elecraft] KBPF3 mod kit

: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dauer, Edward Sent: Monday, March 13, 2017 2:12 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KBPF3 mod kit I just ordered the KIO3B and a KBPF3 mod kit for the K3. The process of installing the KBPF3 mod provides access to the small bat

Re: [Elecraft] KBPF3 mod kit

I don’t think removing the side panel is necessary for these mods. But it’s been a while. The sub-receiver is actually pretty easy to pull and reinstall. Just follow the instructions that come with the mod kits. I’ve found the best way to “sight” the sub receiver re-install is to first

[Elecraft] KBPF3 mod kit

I just ordered the KIO3B and a KBPF3 mod kit for the K3. The process of installing the KBPF3 mod provides access to the small battery under the plastic protective cover. The K3 is about five years old. Would it be worth replacing that battery while I am in there, or do they last essentially

Re: [Elecraft] KBPF3 100-400 kHz Modification

> If the KBPF3 modification compromises performance elsewhere in the > coverage, I might be better off using my current approach: A > home-brew transverter for 630m coverage with a 10.0 - 10.5 MHz IF > with home-brew sharp cut off low pass filter ahead of the RF input. The KBPF3 modification

[Elecraft] KBPF3 100-400 kHz Modification

I am considering the Elecraft modification to the KBPF3 for 630m coverage on my K3. Is there any information published on the band pass filter performance before and after the modification? If the KBPF3 modification compromises performance elsewhere in the coverage, I might be better off using

[Elecraft] KBPF3 mod

If you upgraded from KSYN3 to a-model, you got the old unit obsolete. Maybe you have KBPF3, too and would like to modify it to low-frequency. Needed 0,1uF capacitors are available in obsolete old KSYN3. You need 3, take 6 to be sure. You may loose one or two. The 250uF condenser is already

Re: [Elecraft] KBPF3 upgrade kit and instructions [Corrected]

Yes, but in my case, I remember any mods already done since my K3 was built. - Chuck, KE9UW -- View this message in context: http://elecraft.365791.n2.nabble.com/KBPF3-upgrade-kit-and-instructions-Corrected-tp7604292p7604306.html Sent from the Elecraft mailing list archive at Nabble.com.

Re: [Elecraft] KBPF3 upgrade kit and instructions now available

However, if you are installing a KBPF3A in an existing K3 you will still want to add the bypass capacitors to the regulators on the main board and in the KRX3 if installed. 73, ... Joe, W4TV On 2015-06-25 12:34 AM, Wayne Burdick wrote: On Jun 24, 2015, at 9:23 PM, Michael Eberle

Re: [Elecraft] KBPF3 upgrade kit and instructions [Corrected]

Serial number by itself doesn't by itself reliably indicate what is needed as prior mods and options already installed bear on what is needed or not. No way out of brainwork prior to order. 73, Guy K2AV On Thursday, June 25, 2015, Doug doug49...@gmail.com wrote: Amen. I agree. I also would

Re: [Elecraft] KBPF3 upgrade kit and instructions [Corrected]

Hi Phil, The errata were assimilated (er...incorporated :) 73, Wayne N6KR On Jun 25, 2015, at 10:58 AM, Phil Wheeler w...@socal.rr.com wrote: Ah, much better, Wayne: It now has all the pages referred to in the errata. BTW, is the errata still pertinent or is it OBE? 73, Phil W7OX On

[Elecraft] KBPF3 upgrade kit and instructions [Corrected]

The correct instruction sheet is now available on the order page for the KBPF3 mod kit. You may need to hit refresh on your browser to see the corrected link. 73, Wayne N6KR * * * The long-promised KBPF3 modification kit is now available. It applies to the KBPF3, K3 RF board, and

Re: [Elecraft] KBPF3 upgrade kit and instructions [Corrected]

Ah, much better, Wayne: It now has all the pages referred to in the errata. BTW, is the errata still pertinent or is it OBE? 73, Phil W7OX On 6/25/15 9:13 AM, Wayne Burdick wrote: The correct instruction sheet is now available on the order page for the KBPF3 mod kit. You may need to hit

Re: [Elecraft] KBPF3 upgrade kit and instructions [Corrected]

Hmmm... Before I order (and I am anxious to order something), I need to sit down and check several links on the Elecraft site to figure out what I have and what I can order to upgrade. And check the forum as well. While the Elecraft folks are just hanging out looking for something to do :), I

Re: [Elecraft] KBPF3 upgrade kit and instructions [Corrected]

Amen. I agree. I also would like to be able to put serial number in and see what I need or can upgrade Sent from my iPhone On Jun 25, 2015, at 1:51 PM, ke9uw c-haw...@illinois.edu wrote: Hmmm... Before I order (and I am anxious to order something), I need to sit down and check several

Re: [Elecraft] KBPF3 upgrade kit and instructions [Corrected]

And Jean-Luk, where is 7 of 9? N2TK, Tony -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne Burdick Sent: Thursday, June 25, 2015 5:20 PM To: Phil Wheeler Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KBPF3 upgrade kit and instructions

[Elecraft] KBPF3 upgrade kit and instructions now available

Hi all, The long-promised KBPF3 modification kit is now available. It applies to the KBPF3, K3 RF board, and optionally to the KRX3 sub receiver. It allows the K3 or K3S to receive signals in the 100-500 kHz range with good sensitivity. This is an interesting part of the spectrum, with For

Re: [Elecraft] KBPF3 upgrade kit and instructions now available

Neither the instructions nor the errata speak to the regulator bypass in the KRX3. The instructions do not provide information in either bypass. 73, ... Joe, W4TV On 2015-06-24 8:42 PM, Wayne Burdick wrote: Hi all, The long-promised KBPF3 modification kit is now available. It applies to

Re: [Elecraft] KBPF3 upgrade kit and instructions now available

Will new orders for the KBPF3 have the modification already done or would one need to purchase both the KBPF3 and the KBPF3MDKT if they wanted to receive 100-500 kHz? Mike KI0HA On 6/24/2015 7:42 PM, Wayne Burdick wrote: Hi all, The long-promised KBPF3 modification kit is now available.

Re: [Elecraft] KBPF3 upgrade kit and instructions now available

On Jun 24, 2015, at 9:23 PM, Michael Eberle mtebe...@mchsi.com wrote: Will new orders for the KBPF3 have the modification already done… Yes. That's the KBPF3A. Wayne N6KR __ Elecraft mailing list Home:

Re: [Elecraft] KBPF3 General Coverage Receiver -- Main or Subreceiver

Thanks to everyone who responded to my query -- both on and off the list. My hand has actually been forced a little on this issue, as the KRX3 had a bad female TMP connection. It appeared distorted in shape when I tried to replace the male connector. I then took the cover off the KRX3 and

[Elecraft] KBPF3 General Coverage Receiver -- Main or Subreceiver install

Just back from Dayton with my new-to-me, used K3, SN 7561. I'm in the process of installing the KBPF3 and wondered if it is better installed in the sub-receiver (which this unit has), or on the main board for the main receiver. I'd appreciate any quick responses that a knowledgeable ham

Re: [Elecraft] KBPF3 General Coverage Receiver -- Main or Subreceiver

If you only have 1 bpf module, I'd probably install it in the main, I guess. I added a second one for my sub RX later. Opinions will probably run on both sides, but I'd like to hear the arguments one way or the other myself. (not that it really matters to me- as I said, I have it in both

Re: [Elecraft] KBPF3 and KPA500

Received 3 HD15 M/F gender changers, pulled pin 11 out, attached it the end of the KPA500 control cable, and now the KBPF3 and KPA500 work perfect! Should now be able to use a receive only antenna on 80. My vertical is OK, but it can be noisy. 73 DE K8CXM ... Jim From: Jim Leder (Hotmail)

Re: [Elecraft] KBPF3 and KPA500

As I understand it, the way the PR6 uses the DIGOUT1 connection (pin 11) and the way the KPA500 uses the same connection are physically incompatible with one another. The solution is apparently to break the connection on pin 11 to the KPA500 - see

Re: [Elecraft] KBPF3 and KPA500

(Hotmail) Sent: Friday, September 13, 2013 4:06 PM To: Elecraft Subject: [Elecraft] KBPF3 and KPA500 I installed a KBPF3 option, and it works OK, mostly. I also have a PR6, so I am trying to use the BYPASS connector of the PR6. I have pulled the jumper in the PR6, so the BYPASS would would work

[Elecraft] KBPF3 and KPA500

I installed a KBPF3 option, and it works OK, mostly. I also have a PR6, so I am trying to use the BYPASS connector of the PR6. I have pulled the jumper in the PR6, so the BYPASS would would work. And it does, as long as my KPA500 cable is disconnected. When I connect the KPA500 control cable,

[Elecraft] KBPF3 General Coverage Receive Option Questions

N1LQ-Dave: I have the KBPF3 installed in my main receiver. I needed it to use my K3 down on the 600m band (495-510 KHz), so having it in the main radio is necessary for transmitting on 600m using the TEST mode. Probably not a very common usage, but I thought to mention this. I have the

Re: [Elecraft] KBPF3 General Coverage Receive Option Questions

I use the FM filter, because I had it, and it seems to work well. I have never had the 6 Khz filter to compare it with. -- View this message in context: http://elecraft.365791.n2.nabble.com/KBPF3-General-Coverage-Receive-Option-Questions-tp7569874p7569884.html Sent from the Elecraft mailing

Re: [Elecraft] KBPF3 General Coverage Receive Option Questions

To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KBPF3 General Coverage Receive Option Questions I use the FM filter, because I had it, and it seems to work well. I have never had the 6 Khz filter to compare it with. -- View this message in context: http://elecraft.365791.n2.nabble.com/KBPF3

[Elecraft] KBPF3 General Coverage Receive Option Questions

Hi All, This month I am celebrating my fifth anniversary with my K3. It has performed flawlessly over this time …without a hiccup. My K3 was purchased without the KBPF3 option in 2008. Like many of you, I started my radio adventures in 1962 at the age of 12 as an avid SWL. I recently have

Re: [Elecraft] KBPF3 General Coverage Receive Option Questions

Dave, Since SW Broadcast signals are subject to fading, I would suggest you add the KBPF3 to both the main and the subRX to give you the capability of diversity reception. If you only want to purchase one, I suggest that putting it in the main RX would make operation more straightforward

[Elecraft] KBPF3 coverage

Is anyone using the K3 for receive on 500KHZ? I do not have the KBPF3 installed and of course the K3 is deaf on 500KHZ, so before I order one, would like to know if it works down that far in freq. Or is it compromise performance compared to a good 500KHZ receiver? Thanks 73 Merv K9FD/KH6

[Elecraft] KBPF3 has been sold

Thanks to all who replied. 73, Chuck NM1G __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by:

[Elecraft] KBPF3 Option - Main and Sub Receiver

I am a new owner, and have much still to learn on this rig. Do you have to install 2 of the KBPF3 Option boards in order to have both primary and second reciever have General Coverage Receive filtering? Mine appears to be installed in the second receiver, and throws an error if config is set to

Re: [Elecraft] KBPF3 Option - Main and Sub Receiver

[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of KD4NUE Sent: Saturday, October 06, 2012 4:50 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KBPF3 Option - Main and Sub Receiver I am a new owner, and have much still to learn on this rig. Do you have to install 2 of the KBPF3 Option boards

Re: [Elecraft] KBPF3 Option - Main and Sub Receiver

Welcome aboard!! You only need the KBPF3 if you want to listen to frequencies outside the amateur bands. My recommendation would be to remove the KBPF3 from the KRX3 and move it to the main receiver, but if you want general coverage RX in both receivers, then you'd need to install one on both

[Elecraft] KBPF3

Maybe I've missed it or forgotten where it was but is it documented somewhere what the RX performance is with and without the KBPF3? I've seen where it says that you get 500Khz-30Mhz and 48-54Mhz but it then says KBPF3 required for general coverage But how wide are the ham band filters and

[Elecraft] KBPF3 Query

Guys, I was wondering just how this works. Suppose one wants 9 MHz. Does one set the band to 30M and just tune down to it? Does any of this confuse the band selection via buttons? Alternatively if one sets the frequency with the key pad, what band does it appear in. I seem to recall some

Re: [Elecraft] KBPF3 Query

In this case, I just key it in.  The band will change to 30-meters and if you cycle through the bands, the next time you hit 30-meters you will be set to 9 MHz. BTW, I have my M1-M4 memories set to default frequencies for each band so that M1=CW, M2=SSB, M3=Data A (PSK) and M4=AFSK-A (RTTY).

Re: [Elecraft] KBPF3 Query

Hi Brian, This came up and was discussed on Nov. 15, 2009 with a thread titled K3 Firmware Req for SWL band and Using Memories Search for that thread in the archives to read all the gory details. The key information that's missing from the documentation is the band edges. I determined

Re: [Elecraft] KBPF3 usefulness or effectiveness?

James I suspect that 7.5MHz is far too close to the existing 40m bandpass filtering for you to notice any difference between it and the KBPF3. I can't try it here as I only have the single receiver, but if you to look around 12MHz for example I expect you would detect a significant difference.

Re: [Elecraft] KBPF3 usefulness or effectiveness?

: Sunday, December 27, 2009 11:08 PM To: James Sarte Subject: Re: [Elecraft] KBPF3 usefulness or effectiveness? I do know that it makes a big difference on the broadcast band. Tune in a station under 1000 kHz. It will be much louder on the antenna in jack on the KXV3 than on the main antenna jack

Re: [Elecraft] KBPF3 usefulness or effectiveness?

If the AGC is being used, any difference would be seen in the S-meter, not the AF output, unless you live in an extremely quiet location and you're trying to copy 40m BC during the day. My KBPF3 switches in at 7.385. If you turn the AF gains to minimum in a quiet room, you will hear the relay

Re: [Elecraft] KBPF3 usefulness or effectiveness?

FWIW, mine switches in at 7410 KHz, increasing the signal by 7 or 8 dB. I compared the background noise level below and above 7410 using the K3's internal dBV function, with AGC off. 73, Drew AF2Z On Mon, 28 Dec 2009 11:26:04 -0500, Guy. wrote: If the AGC is being used, any difference would

Re: [Elecraft] KBPF3 usefulness or effectiveness?

Hi Guy et al, I was more or less curious about how it worked. I do hear a relay clicking somewhere around 7400 kHz, but I do not recall seeing or hearing an appreciable change in s-meter readings or AF levels. I'm sure it works fine in the lower broadcast bands though. James K2QI On Mon, Dec

[Elecraft] KBPF3 usefulness or effectiveness?

Hello Elecrafters, When I assembled my K3 I installed the KBPF3 module in the sub receiver figuring that I'd use the sub for SWL. However, I was thinking about moving it back to the main receiver in order to take full advantage of the synchronous AM detection feature. What I noticed though was

[Elecraft] KBPF3 Gen Coverage Rcvr 4 K3

FOR SALE: KBPF-3 General Coverage Receiver module for K3. New from Aptos, it is $129.95; yours for $95 and I ship CONUS. Contact off list, please: [EMAIL PROTECTED] 73, Cary, K4TM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You

[Elecraft] KBPF3

When I ordered my K3 and accessories I did not order the KBPF3 because I thot that was to add general coverage receive Now, I am thinking it is a bandpass filter to filter OUT non-ham band signals. That I need, so another order if my latter idea is correct. What is the function of the

Re: [Elecraft] KBPF3

Hi Charles, When I ordered my K3 and accessories I did not order the KBPF3 because I thot that was to add general coverage receive Correct. Now, I am thinking it is a bandpass filter to filter OUT non-ham band signals. No. It is a filter to allow non-ham frequencies. What is

RE: [Elecraft] KBPF3 answer

+0100 From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] CC: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; elecraft@mailman.qth.net Subject: Re: [Elecraft] KBPF3 Hi Charles, When I ordered my K3 and accessories I did not order the KBPF3 because I thot that was to add general coverage

[Elecraft] KBPF3 frequency range

I'm considering adding a KBPF3 to my growing order list but I am curious as to what is the range of frequencies that are covered with this filter. Did I miss seeing it when I searched the Elecraft site? Nelson, K8DJC -- I am using the free version of SPAMfighter for private users. It has