On 26 Feb 2004 04:50:32 GMT, (Michael Black)
wrote:

KU2S ) writes:
Hi folks.. Have a Regency HR-2A that I want to re-crystal for packet
use, but don't have the manual, and therefore do not have the formula
for calculating the frequency of the receive and transmit crystals for
desired frequency of operation. Could anyone out there help with this
info? Hamfest coming up this weekend and I'd like to shop for
crystals. Also, is there a .PDF of the manual available anywhere?
I've searched the web and there are plenty of folks who'll sell me a
photocopy of the manual for anywhere from $15.00 to $25.00, but to be
honest, that would exceed the value of the radio... Any help would be
greatly appreciated...

But you asked this question back in November here, and got some answers.
If that wasn't enough, people have asked about the crystal frequencies
before, I know I found them at the time you asked back in November.
Go to http://www.groups.google.com and do some searching by yourself.

Michael VE2BVW

Thanks for the help, Mike.. But I BELIEVE my question regarding this
radio back in November regarded why the channel selector displayed the
number 1-6, and then letters A-F. Regardless... if I HAD asked about
crystal frequencies, and if I HAD received the answer, you can be
assured I would NOT have reposted the question in this forum. So it's
obvious that if I HAD posted the question, I did NOT receive the
information.

Have a freakin' fantastic day, eh.


Raymond Sirois KU2S
SysOp: The Lost Chord BBS
607-733-5745
telnet://thelostchord.dns2go.com:6000

"KU2S" wrote in message
...
Hi folks.. Have a Regency HR-2A that I want to re-crystal for packet
use, but don't have the manual, and therefore do not have the formula
for calculating the frequency of the receive and transmit crystals for
desired frequency of operation. Could anyone out there help with this
info? Hamfest coming up this weekend and I'd like to shop for
crystals. Also, is there a .PDF of the manual available anywhere?

The receiver is the standard of desired frequency - 10.7 mhz and then devide
by 3. This gives you a frequecny of about 45 mhz for the crystal. The
transmitt frequency is devided by 24 if you have a HR2A,212 or MS . This is
about 6 mhz. If you have a HR2B then you devide by 18.

Not sure if you will have any luck for the crystals for packet as that is
usually below 146 mhz and the old Regencys were made before anythig bleow
146 mhz was in common use.

Have a Regency HR-2A that I want to re-crystal for packet
use

Raymond-

Receive crystals are in the 45 MHz range, series resonant minus a few Hz, (Fr -
10.7)/3. There is no adjustment, so you must replace the crystal if it is too
far off frequency. The stock IF filter is fairly broad.

Transmit crystals are in the 6 MHz range, parallel resonant, about 20 pf, there
is a trimmer capacitor.

One of the guys around here put one on packet and claimed good results.

73, Fred, K4DII

On 27 Feb 2004 02:56:03 GMT, (Fred McKenzie) wrote:

Have a Regency HR-2A that I want to re-crystal for packet
use

Raymond-

Receive crystals are in the 45 MHz range, series resonant minus a few Hz, (Fr -
10.7)/3. There is no adjustment, so you must replace the crystal if it is too
far off frequency. The stock IF filter is fairly broad.

Transmit crystals are in the 6 MHz range, parallel resonant, about 20 pf, there
is a trimmer capacitor.

One of the guys around here put one on packet and claimed good results.

73, Fred, K4DII


Thanks folks! I might actually have the info I needed, thanks to you
guys. I printed it out, just to make sure I don't **** off MIchael
again... Hopefully I can return the favor some time!


Raymond Sirois KU2S
SysOp: The Lost Chord BBS
607-733-5745
telnet://thelostchord.dns2go.com:6000

On 27 Feb 2004 02:56:03 GMT, (Fred McKenzie) wrote:

Have a Regency HR-2A that I want to re-crystal for packet
use

Raymond-

Receive crystals are in the 45 MHz range, series resonant minus a few Hz, (Fr -
10.7)/3. There is no adjustment, so you must replace the crystal if it is too
far off frequency. The stock IF filter is fairly broad.

Transmit crystals are in the 6 MHz range, parallel resonant, about 20 pf, there
is a trimmer capacitor.

One of the guys around here put one on packet and claimed good results.

73, Fred, K4DII


Thanks folks! I might actually have the info I needed, thanks to you
guys. I printed it out, just to make sure I don't **** off MIchael
again... Hopefully I can return the favor some time!


Raymond Sirois KU2S
SysOp: The Lost Chord BBS
607-733-5745
telnet://thelostchord.dns2go.com:6000

"KU2S" wrote in message
...
Hi folks.. Have a Regency HR-2A that I want to re-crystal for packet
use, but don't have the manual, and therefore do not have the formula
for calculating the frequency of the receive and transmit crystals for
desired frequency of operation. Could anyone out there help with this
info? Hamfest coming up this weekend and I'd like to shop for
crystals. Also, is there a .PDF of the manual available anywhere?
I've searched the web and there are plenty of folks who'll sell me a
photocopy of the manual for anywhere from $15.00 to $25.00, but to be
honest, that would exceed the value of the radio... Any help would be
greatly appreciated...

Thanks much, and 73!


Raymond Sirois KU2S
SysOp: The Lost Chord BBS
607-733-5745
telnet://thelostchord.dns2go.com:6000

I know nothing about that rig, but in general you can check if any of the
existing crystals are stamped with their actual operating frequency, and
figure it out.

I assume it's a two meter rig. Normally the transmit crystals will be some
integer fraction of the transmit frequency, like 6 or 8 or 9, so a 144.0MHz
transmit frequency would have a crystal frequency of 24MHz (6x), 18MHz (8x)
or 16MHz (9x). Receive will be receive frequency +/- the IF frequency
(almost certainly 10.7MHz), divided by some fraction, so 144MHz would be
something like 19.338MHz ( (144 + 10.7)/8 ) or 16.663MHz ( (144 - 10.7)/8 ).

This sounds daunting, but if you can noodle around with a calculator without
loosing track (or use a spreadsheet!), you can figure it out.

KU2S ) writes:
Hi folks.. Have a Regency HR-2A that I want to re-crystal for packet
use, but don't have the manual, and therefore do not have the formula
for calculating the frequency of the receive and transmit crystals for
desired frequency of operation. Could anyone out there help with this
info? Hamfest coming up this weekend and I'd like to shop for
crystals. Also, is there a .PDF of the manual available anywhere?
I've searched the web and there are plenty of folks who'll sell me a
photocopy of the manual for anywhere from $15.00 to $25.00, but to be
honest, that would exceed the value of the radio... Any help would be
greatly appreciated...

But you asked this question back in November here, and got some answers.
If that wasn't enough, people have asked about the crystal frequencies
before, I know I found them at the time you asked back in November.
Go to http://www.groups.google.com and do some searching by yourself.

Michael VE2BVW

"KU2S" wrote in message
...
Hi folks.. Have a Regency HR-2A that I want to re-crystal for packet
use, but don't have the manual, and therefore do not have the formula
for calculating the frequency of the receive and transmit crystals for
desired frequency of operation. Could anyone out there help with this
info? Hamfest coming up this weekend and I'd like to shop for
crystals. Also, is there a .PDF of the manual available anywhere?

The receiver is the standard of desired frequency - 10.7 mhz and then devide
by 3. This gives you a frequecny of about 45 mhz for the crystal. The
transmitt frequency is devided by 24 if you have a HR2A,212 or MS . This is
about 6 mhz. If you have a HR2B then you devide by 18.

Not sure if you will have any luck for the crystals for packet as that is
usually below 146 mhz and the old Regencys were made before anythig bleow
146 mhz was in common use.

Have a Regency HR-2A that I want to re-crystal for packet
use

Raymond-

Receive crystals are in the 45 MHz range, series resonant minus a few Hz, (Fr -
10.7)/3. There is no adjustment, so you must replace the crystal if it is too
far off frequency. The stock IF filter is fairly broad.

Transmit crystals are in the 6 MHz range, parallel resonant, about 20 pf, there
is a trimmer capacitor.

One of the guys around here put one on packet and claimed good results.

73, Fred, K4DII