[HBR] WTB coil forms

[B. Smith]

A discussion of various alternate coil forms can be found:
http://k4che.com/HBR/RF%20Mixer%20Osc%20Band%20Coils%20Page%201.htm

On 12/30/2013 11:10 AM, cemilton at aol.com wrote:
> GM to the list and HAPPY NEW YEAR TO ALL.
>
> I'm new to this reflector but have spent some time in the archives "catching up" on tales of the HBR.
>
> I recently acquired an HBR-16 with one set of coils for 40m.  This particular set was built w/o an on-board power supply and doesn't have a calibrator. (I'll be using an external supply and will add the calibrator circuit later)
>
> The chassis is a work of art and I didn't have the heart to cannibalize the rig and start from the beginning.  So, I've re-worked the existing chassis and made component upgrades where needed.  At this juncture, the rig is working nicely on 40m.  I still have a new front panel to fabricate for the Eddystone dial and an S-meter.
>
> I'd like to add at least 80m and 20m (in that order) but alas, no coil forms.  At least not the American Phenolic 24-5p originals.  I'm guessing these are pretty much un-obtainable but I need to ask.   If anyone has any, even one, I'd be interested in purchasing them.  I have the APC caps so I only need serviceable coil forms.
>
> I'm aware of the use of PVC and even pill bottles so I know there is an "out" if I cannot find some originals.
>
> I do have a question of the group.  I have four BUD forms, the ribbed type with 5 pins.  And they measure the requisite 1.25" diameter.  However, I'm not sure just how well these work when compared to the 24-5p ones.  I used the microwave oven for 5 seconds to see if they heated up.  Well, not as much as some older 1920's forms but more than the clear plastic.  So, I'd expect a somewhat higher Q with the clear ones versus any others.  Am I off-base on this??  I'd sure appreciate any comments.  If anyone has experience with the BUD ribbed forms in an HBR please let me know your thoughts/experiences.
>
> Thanks, All, for the BW and for reading this over.
>
> Best to all in the New Year.
>
> 73
> Chuck
> W4MIL
> Palm Coast, FL
>
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