The personal website of Scott W Harden
July 18th, 2019

OSK and FSK

I got OOK and FSK working together (the S shape in the middle). I'm also now using a crude oven, but am not sure yet how stable frequency is over long time spans.

AJ4VD spotted in Pensacola, FL (W4HBK)

AJ4VD spotted in Greensboro, NC (WD4ELG)

I kept thinking my oscillator was drifting frequency because the line wasn't straight. Turns out it was my curved monitors!

Markdown source code last modified on January 18th, 2021
---
title: OOK and FSK
date: 2019-07-18 21:00:00
tags: qrss
---

# OSK and FSK

I got OOK and FSK working together (the S shape in the middle). I'm also now using a crude oven, but am not sure yet how stable frequency is over long time spans.

### AJ4VD spotted in Pensacola, FL (W4HBK)

<div class="text-center img-border">

[![](W4HBK-OOK_thumb.jpg)](W4HBK-OOK.jpg)

</div>

### AJ4VD spotted in Greensboro, NC (WD4ELG)

<div class="text-center img-border">

[![](WD4ELG-Greensboro-NC-OOK_thumb.jpg)](WD4ELG-Greensboro-NC-OOK.jpg)

</div>

I kept thinking my oscillator was drifting frequency because the line wasn't straight. Turns out it was my curved monitors!

<div class="text-center img-border">

[![](2019-07-19-curved-monitors_thumb.jpg)](2019-07-19-curved-monitors.jpg)

</div>

Amplifier Improvements

I improved my amplifier (now output 500mW) and am impressed how well my attic dipole is doing! It runs east/west so it radiates north/south. I saw my signal on a few more grabbers.

AJ4VD spotted in Northwood, OH (N8NJ)

AJ4VD spotted in Las Cruces, NM (WA5DJJ)

AJ4VD spotted in Florida (WD4AH)

This grab shows a nice airplane reflection in the middle

AJ4VD spotted in Ontario, Canada (VA3ROM)

AJ4VD spotted in Pensacola, FL (W4HBK)

This 8-hour grab reveals when my AC kicks on and off and demonstrates the necessity of ovenizing my setup. It's the signal around 10,139,980 Hz.

Markdown source code last modified on January 18th, 2021
---
title: Amplifier Improvements
date: 2019-07-14 21:00:00
tags: qrss
---

# Amplifier Improvements

I improved my amplifier (now output 500mW) and am impressed how well my attic dipole is doing! It runs east/west so it radiates north/south. I saw my signal on a few more grabbers.

### AJ4VD spotted in Northwood, OH (N8NJ)

<div class="text-center img-border">

[![](N8NJ-Northwood-OH-USA_thumb.jpg)](N8NJ-Northwood-OH-USA.jpg)

</div>

### AJ4VD spotted in Las Cruces, NM (WA5DJJ)

<div class="text-center img-border">

[![](WA5DJJ-LasCruces-NM-USA_thumb.jpg)](WA5DJJ-LasCruces-NM-USA.jpg)

</div>

### AJ4VD spotted in Florida (WD4AH) 

This grab shows a nice airplane reflection in the middle

<div class="text-center img-border">

[![](WD4AH-FL-USA_thumb.jpg)](WD4AH-FL-USA.jpg)

</div>

### AJ4VD spotted in Ontario, Canada (VA3ROM)

<div class="text-center img-border">

[![](VA3ROM-Ontario-Canada_thumb.jpg)](VA3ROM-Ontario-Canada.jpg)

</div>

### AJ4VD spotted in Pensacola, FL (W4HBK)

This 8-hour grab reveals when my AC kicks on and off and demonstrates the necessity of ovenizing my setup. It's the signal around 10,139,980 Hz.

<div class="text-center img-border">

[![](W4HBK-Pensacola-FL-USA-unstable_thumb.jpg)](W4HBK-Pensacola-FL-USA-unstable.jpg)

</div>
July 13th, 2019

QRSS Spots

This week I strung-up a 30m dipole in the attic and built an oscillator, keyer, and amplifier (all as separate modules). I finished the amplifier this morning and spotted the signal (the rectangular squiggle) on two grabbers. I was running 3 PPV into 50 Ohm so I think that's about 22 mW.

AJ4VD spotted in Pensacola, FL (W4HBK)

AJ4VD spotted in Greensboro, NC (WD4ELG)

Markdown source code last modified on January 18th, 2021
---
title: QRSS Spots
date: 2019-07-13 21:00:00
tags: qrss
---

# QRSS Spots

This week I strung-up a 30m dipole in the attic and built an oscillator, keyer, and amplifier (all as separate modules). I finished the amplifier this morning and spotted the signal (the rectangular squiggle) on two grabbers. I was running 3 PPV into 50 Ohm so I think that's about 22 mW.

### AJ4VD spotted in Pensacola, FL (W4HBK)

<div class="text-center img-border">

[![](W4HBK-Pensacola-FL-USA_thumb.jpg)](W4HBK-Pensacola-FL-USA.jpg)

</div>

### AJ4VD spotted in Greensboro, NC (WD4ELG)

<div class="text-center img-border">

[![](WD4ELG-Greensboro-NC-USA_thumb.jpg)](WD4ELG-Greensboro-NC-USA.jpg)

</div>

Bone Marrow Transplant Complete!

After 23 days living in the hospital I’m happy to report my bone marrow transplant is looking good, and I’m free to continue recovering at home! I’m not going to sugar coat it: this ordeal was rough. However, I planned and prepared well for it, had a lot of fantastic support along the way, and I feel great about how well everything went! It couldn’t feel more amazing to finally be home again. The air conditioning, my couch, my TV, my pillow, my high-speed internet! It’s great to be back.

For those of you finding this page for the first time, I just finished an autologous bone marrow transplant to treat a condition where I make abnormal cancer-causing white blood cells. To do this some stem cells were collected and frozen, then strong chemotherapy was used to kill all of my bone marrow (where blood cells are made) to the point my body could no longer make any blood. During this time my white blood cell count went to zero, and I required blood infusions to keep me alive (thanks all you blood donors out there!). I was then infused with stem cells that were able to start growing new bone marrow. I have a brand new immune system now (just like when I was a baby) and it will continue to grow over the next few months, but I have to keep it safe by wearing a mask and limiting my exposure with other people while it matures.

I made an infographic to show my bloodwork during transplant. What, you didn’t think I’d try to data mine stuff from my procedure? In the bone marrow transplant world, stem cell infusion (transplant day) is what everything is centered around. I was infused with strong chemotherapy multiple times a day from days -6 to -1 to kill all my blood-producing bone marrow. Day zero I was infused with previously-collected stem cells, and celebrated a new birthday for my immune system. Since the old bone marrow was dead and not producing any white blood cells, my circulating blood cells slowly dropped off until they reached zero. Note that healthy adults have a white blood cell count of 5-10 (thousand/µL). It was a scary feeling on day +5 knowing that I had a white blood cell count of zero! The bone marrow transplant floor is largely sealed and isolated, visitation was is highly restricted, and I was on multiple antibiotics, antifungals, and antiviral medicines to get me through it. On day +9 I got the first hint that the transplant was working, as my white blood cells were just barely detectable. This confirmed that stem cells had matured into white-blood-cell-producing bone marrow (engraftment), and as my levels climbed I felt better and better.

Now that the core of my bone marrow transplant procedure is over, I don’t plan to continue updating this web page regularly. The procedure isn’t a sure bet at curing my disease, but it’s the best shot I’ve got, so I’m just going to wait it out and take the best care of my body I can and hope for the best. There’s a chance I could need additional treatment some day (CAR-T immunotherapy, an allogeneic bone marrow transplant from another person as a donor, or additional chemotherapy) but for now I’m taking it easy, and if this page remains dormant that means I’m living a normal life!

Update: one week later...

Thanks to all the friends and family that supported me during my treatments both locally and from afar. This experience was challenging but doable, and I attribute a lot of my success to your support and encouragement. I hope I won’t need any more serious treatments from here, but even if I do I know I’m prepared! The whole team at the UF Health Bone Marrow Transplant Unit was amazing too, and I couldn’t be more grateful and impressed with the awesome treatment I got along the way.

Markdown source code last modified on January 18th, 2021
---
title: Bone Marrow Transplant Complete!
date: 2019-04-13 16:32:00
tags: med
---

# Bone Marrow Transplant Complete!

**After 23 days living in the hospital I’m happy to report my bone marrow transplant is looking good, and I’m free to continue recovering at home!** I’m not going to sugar coat it: this ordeal was rough. However, I planned and prepared well for it, had a lot of fantastic support along the way, and I feel great about how well everything went! It couldn’t feel more amazing to finally be home again. The air conditioning, my couch, my TV, my pillow, my high-speed internet! It’s great to be back.

<div class="text-center img-border">

[![](scott-harden-bone-marrow-transplant-finished-leaving-hospital_thumb.jpg)](scott-harden-bone-marrow-transplant-finished-leaving-hospital.jpg)

</div>

**For those of you finding this page for the first time, I just finished an autologous bone marrow transplant to treat a condition where I make abnormal cancer-causing white blood cells.** To do this some stem cells were collected and frozen, then strong chemotherapy was used to kill all of my bone marrow (where blood cells are made) to the point my body could no longer make any blood. During this time my white blood cell count went to zero, and I required blood infusions to keep me alive (thanks all you blood donors out there!). I was then infused with stem cells that were able to start growing new bone marrow. I have a brand new immune system now (just like when I was a baby) and it will continue to grow over the next few months, but I have to keep it safe by wearing a mask and limiting my exposure with other people while it matures.

<div class="text-center img-border img-medium">

[![](scott-harden-bone-marrow-transplant-finished-scott-kane_thumb.jpg)](scott-harden-bone-marrow-transplant-finished-scott-kane.jpg)

</div>

<div class="text-center img-border img-micro">

[![](scott-harden-bone-marrow-transplant-withdrawing-picc-line_thumb.jpg)](scott-harden-bone-marrow-transplant-withdrawing-picc-line.jpg)
[![](scott-harden-bone-marrow-transplant-finished-lets-go-home_thumb.jpg)](scott-harden-bone-marrow-transplant-finished-lets-go-home.jpg)
[![](scott-harden-bone-marrow-transplant-finished-leaving-the-floor_thumb.jpg)](scott-harden-bone-marrow-transplant-finished-leaving-the-floor.jpg)

</div>

**I made an infographic to show my bloodwork during transplant.** What, you didn’t think I’d try to data mine stuff from my procedure? In the bone marrow transplant world, stem cell infusion (transplant day) is what everything is centered around. I was infused with strong chemotherapy multiple times a day from days -6 to -1 to kill all my blood-producing bone marrow. Day zero I was infused with previously-collected stem cells, and celebrated a new birthday for my immune system. Since the old bone marrow was dead and not producing any white blood cells, my circulating blood cells slowly dropped off until they reached zero. Note that healthy adults have a white blood cell count of 5-10 (thousand/µL). It was a scary feeling on day +5 knowing that I had a white blood cell count of zero! The bone marrow transplant floor is largely sealed and isolated, visitation was is highly restricted, and I was on multiple antibiotics, antifungals, and antiviral medicines to get me through it. On day +9 I got the first hint that the transplant was working, as my white blood cells were just barely detectable. This confirmed that stem cells had matured into white-blood-cell-producing bone marrow (engraftment), and as my levels climbed I felt better and better.

<div class="text-center img-medium">

[![](scott-harden-bone-marrow-transplant-white-blood-cell-count-bloodwork_thumb.jpg)](scott-harden-bone-marrow-transplant-white-blood-cell-count-bloodwork.png)

</div>

**Now that the core of my bone marrow transplant procedure is over, I don’t plan to continue updating this web page regularly.** The procedure isn’t a sure bet at curing my disease, but it’s the best shot I’ve got, so I’m just going to wait it out and take the best care of my body I can and hope for the best. There’s a chance I could need additional treatment some day (CAR-T immunotherapy, an allogeneic bone marrow transplant from another person as a donor, or additional chemotherapy) but for now I’m taking it easy, and if this page remains dormant that means I’m living a normal life!

### Update: _one week later..._

**Thanks to all the friends and family that supported me during my treatments both locally and from afar.** This experience was challenging but doable, and I attribute a lot of my success to your support and encouragement. I hope I won’t need any more serious treatments from here, but even if I do I know I’m prepared! The whole team at the UF Health Bone Marrow Transplant Unit was amazing too, and I couldn’t be more grateful and impressed with the awesome treatment I got along the way.

<div class="text-center img-border">

[![](scott-harden-cancer-bone-marrow-transplant-recovery_thumb.jpg)](scott-harden-cancer-bone-marrow-transplant-recovery.jpg)

</div>
March 27th, 2019

Transplant Day

Today I received the stem cells which will become my new immune system! The infusion itself was relatively uneventful (a gravity-fed bag of cells flowed into my PICC line for about an hour) but it represents a big day for me and a shot at one day having a healthy immune system. After the infusion the transplant team came in and sang happy birthday to celebrate!

While I spent the last week in the hospital focused on getting through chemotherapy to gear up for this transplant day, the next few weeks are focused more on preventing infections and managing symptoms related to the continuing drop in my immune function as my white blood cell count approaches zero. Realizing that I’m going to be feeling a lot worse before I start feeling better again, I don’t plan on updating this website until near the end of my hospital stay when my numbers begin to elevate again (which fingers-crossed is a couple of weeks from now). For now I’m happy to report that things are looking good and I’m eager to continue on this arduous but exciting journey!

Markdown source code last modified on January 18th, 2021
---
title: Transplant Day
date: 2019-03-27 20:37:00
tags: med
---

# Transplant Day

**Today I received the stem cells which will become my new immune system!** The infusion itself was relatively uneventful (a gravity-fed bag of cells flowed into my PICC line for about an hour) but it represents a big day for me and a shot at one day having a healthy immune system. After the infusion the transplant team came in and sang happy birthday to celebrate!

<div class="text-center img-border">

[![](IMG_0045_thumb.jpg)](IMG_0045.jpg)

</div>

**While I spent the last week in the hospital focused on getting through chemotherapy to gear up for this transplant day,** the next few weeks are focused more on preventing infections and managing symptoms related to the continuing drop in my immune function as my white blood cell count approaches zero. Realizing that I’m going to be feeling a lot worse before I start feeling better again, I don’t plan on updating this website until near the end of my hospital stay when my numbers begin to elevate again (which fingers-crossed is a couple of weeks from now). For now I’m happy to report that things are looking good and I’m eager to continue on this arduous but exciting journey!
Pages